What’s the state of smog pollution where you live?

Smog — also known as ground-level ozone — can trigger asthma attacks and increase the risk of heart and lung diseases. Many areas lack air monitors. Rigorous monitoring is critical for protecting public health. Read the full story.

Alabama Alabama No air monitoring
Alabama Autauga County No air monitoring
Alabama Baldwin County 61ppb
Alabama Barbour County No air monitoring
Alabama Bibb County No air monitoring
Alabama Blount County No air monitoring
Alabama Bullock County No air monitoring
Alabama Butler County No air monitoring
Alabama Calhoun County No air monitoring
Alabama Chambers County No air monitoring
Alabama Cherokee County No air monitoring
Alabama Chilton County No air monitoring
Alabama Choctaw County No air monitoring
Alabama Clarke County No air monitoring
Alabama Clay County No air monitoring
Alabama Cleburne County No air monitoring
Alabama Coffee County No air monitoring
Alabama Colbert County No air monitoring
Alabama Conecuh County No air monitoring
Alabama Coosa County No air monitoring
Alabama Covington County No air monitoring
Alabama Crenshaw County No air monitoring
Alabama Cullman County No air monitoring
Alabama Dale County No air monitoring
Alabama Dallas County No air monitoring
Alabama DeKalb County 61ppb
Alabama Elmore County 57ppb
Alabama Escambia County No air monitoring
Alabama Etowah County 61ppb
Alabama Fayette County No air monitoring
Alabama Franklin County No air monitoring
Alabama Geneva County No air monitoring
Alabama Greene County No air monitoring
Alabama Hale County No air monitoring
Alabama Henry County No air monitoring
Alabama Houston County No air monitoring
Alabama Jackson County No air monitoring
Alabama Jefferson County 68ppb
Alabama Lamar County No air monitoring
Alabama Lauderdale County No air monitoring
Alabama Lawrence County No air monitoring
Alabama Lee County No air monitoring
Alabama Limestone County No air monitoring
Alabama Lowndes County No air monitoring
Alabama Macon County No air monitoring
Alabama Madison County 63ppb
Alabama Marengo County No air monitoring
Alabama Marion County No air monitoring
Alabama Marshall County No air monitoring
Alabama Mobile County 60ppb
Alabama Monroe County No air monitoring
Alabama Montgomery County 62ppb
Alabama Morgan County 64ppb
Alabama Perry County No air monitoring
Alabama Pickens County No air monitoring
Alabama Pike County No air monitoring
Alabama Randolph County No air monitoring
Alabama Russell County 61ppb
Alabama Shelby County 63ppb
Alabama St. Clair County No air monitoring
Alabama Sumter County 55ppb
Alabama Talladega County No air monitoring
Alabama Tallapoosa County No air monitoring
Alabama Tuscaloosa County 58ppb
Alabama Walker County No air monitoring
Alabama Washington County No air monitoring
Alabama Wilcox County No air monitoring
Alabama Winston County No air monitoring
Alaska Alaska No air monitoring
Alaska Aleutians East Borough No air monitoring
Alaska Aleutians West Census Area No air monitoring
Alaska Anchorage Borough No air monitoring
Alaska Bethel Census Area No air monitoring
Alaska Bristol Bay Borough No air monitoring
Alaska Denali Borough 52ppb
Alaska Dillingham Census Area No air monitoring
Alaska Fairbanks North Star Borough 50ppb
Alaska Haines Borough No air monitoring
Alaska Juneau Borough No air monitoring
Alaska Kenai Peninsula Borough No air monitoring
Alaska Ketchikan Gateway Borough No air monitoring
Alaska Kodiak Island Borough No air monitoring
Alaska Lake and Peninsula Borough No air monitoring
Alaska Matanuska-Susitna Borough No air monitoring
Alaska Nome Census Area No air monitoring
Alaska North Slope Borough No air monitoring
Alaska Northwest Arctic Borough No air monitoring
Alaska Prince of Wales-Outer Ketchikan Census Area No air monitoring
Alaska Sitka Borough No air monitoring
Alaska Skagway-Hoonah-Angoon Census Area No air monitoring
Alaska Skagway-Yakutat-Angoon Census Area No air monitoring
Alaska Southeast Fairbanks Census Area No air monitoring
Alaska Valdez-Cordova Census Area No air monitoring
Alaska Wade Hampton Census Area No air monitoring
Alaska Wrangell-Petersburg Census Area No air monitoring
Alaska Yakutat Borough No air monitoring
Alaska Yukon-Koyukuk Census Area No air monitoring
Arizona Apache County No air monitoring
Arizona Arizona No air monitoring
Arizona Cochise County 66ppb
Arizona Coconino County 65ppb
Arizona Gila County 75ppb
Arizona Graham County No air monitoring
Arizona Greenlee County No air monitoring
Arizona La Paz County 67ppb
Arizona Maricopa County 80ppb
Arizona Mohave County No air monitoring
Arizona Navajo County 64ppb
Arizona Pima County 69ppb
Arizona Pinal County 75ppb
Arizona Santa Cruz County No air monitoring
Arizona Yavapai County 61ppb
Arizona Yuma County 70ppb
Arkansas Arkansas No air monitoring
Arkansas Arkansas County No air monitoring
Arkansas Ashley County No air monitoring
Arkansas Baxter County No air monitoring
Arkansas Benton County No air monitoring
Arkansas Boone County No air monitoring
Arkansas Bradley County No air monitoring
Arkansas Calhoun County No air monitoring
Arkansas Carroll County No air monitoring
Arkansas Chicot County No air monitoring
Arkansas Clark County 62ppb
Arkansas Clay County No air monitoring
Arkansas Cleburne County No air monitoring
Arkansas Cleveland County No air monitoring
Arkansas Columbia County No air monitoring
Arkansas Conway County No air monitoring
Arkansas Craighead County No air monitoring
Arkansas Crawford County No air monitoring
Arkansas Crittenden County 72ppb
Arkansas Cross County No air monitoring
Arkansas Dallas County No air monitoring
Arkansas Desha County No air monitoring
Arkansas Drew County No air monitoring
Arkansas Faulkner County No air monitoring
Arkansas Franklin County No air monitoring
Arkansas Fulton County No air monitoring
Arkansas Garland County No air monitoring
Arkansas Grant County No air monitoring
Arkansas Greene County No air monitoring
Arkansas Hempstead County No air monitoring
Arkansas Hot Spring County No air monitoring
Arkansas Howard County No air monitoring
Arkansas Independence County No air monitoring
Arkansas Izard County No air monitoring
Arkansas Jackson County No air monitoring
Arkansas Jefferson County No air monitoring
Arkansas Johnson County No air monitoring
Arkansas Lafayette County No air monitoring
Arkansas Lawrence County No air monitoring
Arkansas Lee County No air monitoring
Arkansas Lincoln County No air monitoring
Arkansas Little River County No air monitoring
Arkansas Logan County No air monitoring
Arkansas Lonoke County No air monitoring
Arkansas Madison County No air monitoring
Arkansas Marion County No air monitoring
Arkansas Miller County No air monitoring
Arkansas Mississippi County No air monitoring
Arkansas Monroe County No air monitoring
Arkansas Montgomery County No air monitoring
Arkansas Nevada County No air monitoring
Arkansas Newton County 62ppb
Arkansas Ouachita County No air monitoring
Arkansas Perry County No air monitoring
Arkansas Phillips County No air monitoring
Arkansas Pike County No air monitoring
Arkansas Poinsett County No air monitoring
Arkansas Polk County No air monitoring
Arkansas Pope County No air monitoring
Arkansas Prairie County No air monitoring
Arkansas Pulaski County 66ppb
Arkansas Randolph County No air monitoring
Arkansas Saline County No air monitoring
Arkansas Scott County No air monitoring
Arkansas Searcy County No air monitoring
Arkansas Sebastian County No air monitoring
Arkansas Sevier County No air monitoring
Arkansas Sharp County No air monitoring
Arkansas St. Francis County No air monitoring
Arkansas Stone County No air monitoring
Arkansas Union County No air monitoring
Arkansas Van Buren County No air monitoring
Arkansas Washington County 67ppb
Arkansas White County No air monitoring
Arkansas Woodruff County No air monitoring
Arkansas Yell County No air monitoring
California Alameda County 70ppb
California Alpine County No air monitoring
California Amador County 65ppb
California Butte County 67ppb
California Calaveras County 66ppb
California California No air monitoring
California Colusa County 59ppb
California Contra Costa County 66ppb
California Del Norte County No air monitoring
California El Dorado County 75ppb
California Fresno County 84ppb
California Glenn County 62ppb
California Humboldt County 41ppb
California Imperial County 77ppb
California Inyo County 71ppb
California Kern County 90ppb
California Kings County 76ppb
California Lake County 51ppb
California Lassen County No air monitoring
California Los Angeles County 98ppb
California Madera County 80ppb
California Marin County 54ppb
California Mariposa County 73ppb
California Mendocino County 53ppb
California Merced County 75ppb
California Modoc County No air monitoring
California Mono County No air monitoring
California Monterey County 56ppb
California Napa County No air monitoring
California Nevada County 78ppb
California Orange County 72ppb
California Placer County 74ppb
California Plumas County No air monitoring
California Riverside County 96ppb
California Sacramento County 76ppb
California San Benito County 66ppb
California San Bernardino County 106ppb
California San Diego County 79ppb
California San Francisco County 45ppb
California San Joaquin County 64ppb
California San Luis Obispo County 71ppb
California San Mateo County 54ppb
California Santa Barbara County 58ppb
California Santa Clara County 69ppb
California Santa Cruz County 50ppb
California Shasta County 67ppb
California Sierra County No air monitoring
California Siskiyou County 60ppb
California Solano County 64ppb
California Sonoma County 50ppb
California Stanislaus County 79ppb
California Sutter County 71ppb
California Tehama County 72ppb
California Trinity County No air monitoring
California Tulare County 88ppb
California Tuolumne County No air monitoring
California Ventura County 75ppb
California Yolo County 67ppb
California Yuba County No air monitoring
Colorado Adams County 74ppb
Colorado Alamosa County No air monitoring
Colorado Arapahoe County 77ppb
Colorado Archuleta County 60ppb
Colorado Baca County No air monitoring
Colorado Bent County No air monitoring
Colorado Boulder County 75ppb
Colorado Chaffee County No air monitoring
Colorado Cheyenne County No air monitoring
Colorado Clear Creek County No air monitoring
Colorado Colorado No air monitoring
Colorado Conejos County No air monitoring
Colorado Costilla County No air monitoring
Colorado Crowley County No air monitoring
Colorado Custer County No air monitoring
Colorado Delta County No air monitoring
Colorado Denver County 75ppb
Colorado Dolores County No air monitoring
Colorado Douglas County 81ppb
Colorado Eagle County No air monitoring
Colorado El Paso County 71ppb
Colorado Elbert County No air monitoring
Colorado Fremont County No air monitoring
Colorado Garfield County 59ppb
Colorado Gilpin County 75ppb
Colorado Grand County No air monitoring
Colorado Gunnison County 65ppb
Colorado Hinsdale County No air monitoring
Colorado Huerfano County No air monitoring
Colorado Jackson County No air monitoring
Colorado Jefferson County 80ppb
Colorado Kiowa County No air monitoring
Colorado Kit Carson County No air monitoring
Colorado La Plata County 67ppb
Colorado Lake County No air monitoring
Colorado Larimer County 76ppb
Colorado Las Animas County No air monitoring
Colorado Lincoln County No air monitoring
Colorado Logan County No air monitoring
Colorado Mesa County 63ppb
Colorado Mineral County No air monitoring
Colorado Moffat County No air monitoring
Colorado Montezuma County 64ppb
Colorado Montrose County No air monitoring
Colorado Morgan County No air monitoring
Colorado Otero County No air monitoring
Colorado Ouray County No air monitoring
Colorado Park County No air monitoring
Colorado Phillips County No air monitoring
Colorado Pitkin County No air monitoring
Colorado Prowers County No air monitoring
Colorado Pueblo County No air monitoring
Colorado Rio Blanco County 67ppb
Colorado Rio Grande County No air monitoring
Colorado Routt County No air monitoring
Colorado Saguache County No air monitoring
Colorado San Juan County No air monitoring
Colorado San Miguel County No air monitoring
Colorado Sedgwick County No air monitoring
Colorado Summit County No air monitoring
Colorado Teller County No air monitoring
Colorado Washington County No air monitoring
Colorado Weld County 74ppb
Colorado Yuma County No air monitoring
Connecticut Connecticut No air monitoring
Connecticut Fairfield County 82ppb
Connecticut Hartford County 71ppb
Connecticut Litchfield County 71ppb
Connecticut Middlesex County 75ppb
Connecticut New Haven County 79ppb
Connecticut New London County 73ppb
Connecticut Tolland County 68ppb
Connecticut Windham County 65ppb
Delaware Delaware No air monitoring
Delaware Kent County 65ppb
Delaware New Castle County 66ppb
Delaware Sussex County 65ppb
District of Columbia District of Columbia 71ppb
District of Columbia District of Columbia No air monitoring
Florida Alachua County 58ppb
Florida Baker County 59ppb
Florida Bay County 58ppb
Florida Bradford County No air monitoring
Florida Brevard County 61ppb
Florida Broward County 58ppb
Florida Calhoun County No air monitoring
Florida Charlotte County No air monitoring
Florida Citrus County No air monitoring
Florida Clay County No air monitoring
Florida Collier County 58ppb
Florida Columbia County 60ppb
Florida Dade County No air monitoring
Florida DeSoto County No air monitoring
Florida Dixie County No air monitoring
Florida Duval County 61ppb
Florida Escambia County 63ppb
Florida Flagler County 58ppb
Florida Florida No air monitoring
Florida Franklin County No air monitoring
Florida Gadsden County No air monitoring
Florida Gilchrist County No air monitoring
Florida Glades County No air monitoring
Florida Gulf County No air monitoring
Florida Hamilton County No air monitoring
Florida Hardee County No air monitoring
Florida Hendry County No air monitoring
Florida Hernando County No air monitoring
Florida Highlands County 59ppb
Florida Hillsborough County 66ppb
Florida Holmes County 56ppb
Florida Indian River County 58ppb
Florida Jackson County No air monitoring
Florida Jefferson County No air monitoring
Florida Lafayette County No air monitoring
Florida Lake County 61ppb
Florida Lee County No air monitoring
Florida Leon County 58ppb
Florida Levy County No air monitoring
Florida Liberty County 56ppb
Florida Madison County No air monitoring
Florida Manatee County No air monitoring
Florida Marion County 62ppb
Florida Martin County 55ppb
Florida Miami-Dade County 64ppb
Florida Monroe County No air monitoring
Florida Nassau County No air monitoring
Florida Okaloosa County No air monitoring
Florida Okeechobee County No air monitoring
Florida Orange County 65ppb
Florida Osceola County 61ppb
Florida Palm Beach County 57ppb
Florida Pasco County 61ppb
Florida Pinellas County 62ppb
Florida Polk County 63ppb
Florida Putnam County No air monitoring
Florida Santa Rosa County 62ppb
Florida Sarasota County 62ppb
Florida Seminole County 61ppb
Florida St. Johns County No air monitoring
Florida St. Lucie County 57ppb
Florida Sumter County No air monitoring
Florida Suwannee County No air monitoring
Florida Taylor County No air monitoring
Florida Union County No air monitoring
Florida Volusia County 58ppb
Florida Wakulla County 56ppb
Florida Walton County No air monitoring
Florida Washington County No air monitoring
Georgia Appling County No air monitoring
Georgia Atkinson County No air monitoring
Georgia Bacon County No air monitoring
Georgia Baker County No air monitoring
Georgia Baldwin County No air monitoring
Georgia Banks County No air monitoring
Georgia Barrow County No air monitoring
Georgia Bartow County No air monitoring
Georgia Ben Hill County No air monitoring
Georgia Berrien County No air monitoring
Georgia Bibb County 62ppb
Georgia Bleckley County No air monitoring
Georgia Brantley County No air monitoring
Georgia Brooks County No air monitoring
Georgia Bryan County No air monitoring
Georgia Bulloch County No air monitoring
Georgia Burke County No air monitoring
Georgia Butts County No air monitoring
Georgia Calhoun County No air monitoring
Georgia Camden County No air monitoring
Georgia Candler County No air monitoring
Georgia Carroll County No air monitoring
Georgia Catoosa County No air monitoring
Georgia Charlton County No air monitoring
Georgia Chatham County 59ppb
Georgia Chattahoochee County No air monitoring
Georgia Chattooga County 60ppb
Georgia Cherokee County No air monitoring
Georgia Clarke County 63ppb
Georgia Clay County No air monitoring
Georgia Clayton County No air monitoring
Georgia Clinch County No air monitoring
Georgia Cobb County 63ppb
Georgia Coffee County No air monitoring
Georgia Colquitt County No air monitoring
Georgia Columbia County 57ppb
Georgia Cook County No air monitoring
Georgia Coweta County No air monitoring
Georgia Crawford County No air monitoring
Georgia Crisp County No air monitoring
Georgia Dade County No air monitoring
Georgia Dawson County 62ppb
Georgia Decatur County No air monitoring
Georgia DeKalb County 67ppb
Georgia Dodge County No air monitoring
Georgia Dooly County No air monitoring
Georgia Dougherty County No air monitoring
Georgia Douglas County 68ppb
Georgia Early County No air monitoring
Georgia Echols County No air monitoring
Georgia Effingham County No air monitoring
Georgia Elbert County No air monitoring
Georgia Emanuel County No air monitoring
Georgia Evans County No air monitoring
Georgia Fannin County No air monitoring
Georgia Fayette County No air monitoring
Georgia Floyd County No air monitoring
Georgia Forsyth County No air monitoring
Georgia Franklin County No air monitoring
Georgia Fulton County 70ppb
Georgia Georgia No air monitoring
Georgia Gilmer County No air monitoring
Georgia Glascock County No air monitoring
Georgia Glynn County 56ppb
Georgia Gordon County No air monitoring
Georgia Grady County No air monitoring
Georgia Greene County No air monitoring
Georgia Gwinnett County 67ppb
Georgia Habersham County No air monitoring
Georgia Hall County No air monitoring
Georgia Hancock County No air monitoring
Georgia Haralson County No air monitoring
Georgia Harris County No air monitoring
Georgia Hart County No air monitoring
Georgia Heard County No air monitoring
Georgia Henry County 69ppb
Georgia Houston County No air monitoring
Georgia Irwin County No air monitoring
Georgia Jackson County No air monitoring
Georgia Jasper County No air monitoring
Georgia Jeff Davis County No air monitoring
Georgia Jefferson County No air monitoring
Georgia Jenkins County No air monitoring
Georgia Johnson County No air monitoring
Georgia Jones County No air monitoring
Georgia Lamar County No air monitoring
Georgia Lanier County No air monitoring
Georgia Laurens County No air monitoring
Georgia Lee County No air monitoring
Georgia Liberty County No air monitoring
Georgia Lincoln County No air monitoring
Georgia Long County No air monitoring
Georgia Lowndes County No air monitoring
Georgia Lumpkin County No air monitoring
Georgia Macon County No air monitoring
Georgia Madison County No air monitoring
Georgia Marion County No air monitoring
Georgia McDuffie County No air monitoring
Georgia McIntosh County No air monitoring
Georgia Meriwether County No air monitoring
Georgia Miller County No air monitoring
Georgia Mitchell County No air monitoring
Georgia Monroe County No air monitoring
Georgia Montgomery County No air monitoring
Georgia Morgan County No air monitoring
Georgia Murray County 66ppb
Georgia Muscogee County 60ppb
Georgia Newton County No air monitoring
Georgia Oconee County No air monitoring
Georgia Oglethorpe County No air monitoring
Georgia Paulding County No air monitoring
Georgia Peach County No air monitoring
Georgia Pickens County No air monitoring
Georgia Pierce County No air monitoring
Georgia Pike County 65ppb
Georgia Polk County No air monitoring
Georgia Pulaski County No air monitoring
Georgia Putnam County No air monitoring
Georgia Quitman County No air monitoring
Georgia Rabun County No air monitoring
Georgia Randolph County No air monitoring
Georgia Richmond County 62ppb
Georgia Rockdale County 66ppb
Georgia Schley County No air monitoring
Georgia Screven County No air monitoring
Georgia Seminole County No air monitoring
Georgia Spalding County No air monitoring
Georgia Stephens County No air monitoring
Georgia Stewart County No air monitoring
Georgia Sumter County 60ppb
Georgia Talbot County No air monitoring
Georgia Taliaferro County No air monitoring
Georgia Tattnall County No air monitoring
Georgia Taylor County No air monitoring
Georgia Telfair County No air monitoring
Georgia Terrell County No air monitoring
Georgia Thomas County No air monitoring
Georgia Tift County No air monitoring
Georgia Toombs County No air monitoring
Georgia Towns County No air monitoring
Georgia Treutlen County No air monitoring
Georgia Troup County No air monitoring
Georgia Turner County No air monitoring
Georgia Twiggs County No air monitoring
Georgia Union County No air monitoring
Georgia Upson County No air monitoring
Georgia Walker County No air monitoring
Georgia Walton County No air monitoring
Georgia Ware County No air monitoring
Georgia Warren County No air monitoring
Georgia Washington County No air monitoring
Georgia Wayne County No air monitoring
Georgia Webster County No air monitoring
Georgia Wheeler County No air monitoring
Georgia White County No air monitoring
Georgia Whitfield County No air monitoring
Georgia Wilcox County No air monitoring
Georgia Wilkes County No air monitoring
Georgia Wilkinson County No air monitoring
Georgia Worth County No air monitoring
Hawaii Hawaii No air monitoring
Hawaii Hawaii County No air monitoring
Hawaii Honolulu County 45ppb
Hawaii Kalawao County No air monitoring
Hawaii Kauai County No air monitoring
Hawaii Maui County No air monitoring
Idaho Ada County 70ppb
Idaho Adams County No air monitoring
Idaho Bannock County 61ppb
Idaho Bear Lake County No air monitoring
Idaho Benewah County No air monitoring
Idaho Bingham County No air monitoring
Idaho Blaine County No air monitoring
Idaho Boise County No air monitoring
Idaho Bonner County No air monitoring
Idaho Bonneville County No air monitoring
Idaho Boundary County No air monitoring
Idaho Butte County 63ppb
Idaho Camas County No air monitoring
Idaho Canyon County No air monitoring
Idaho Caribou County No air monitoring
Idaho Cassia County No air monitoring
Idaho Clark County No air monitoring
Idaho Clearwater County No air monitoring
Idaho Custer County No air monitoring
Idaho Elmore County No air monitoring
Idaho Franklin County No air monitoring
Idaho Fremont County No air monitoring
Idaho Gem County No air monitoring
Idaho Gooding County No air monitoring
Idaho Idaho No air monitoring
Idaho Idaho County 59ppb
Idaho Jefferson County No air monitoring
Idaho Jerome County No air monitoring
Idaho Kootenai County No air monitoring
Idaho Latah County No air monitoring
Idaho Lemhi County No air monitoring
Idaho Lewis County No air monitoring
Idaho Lincoln County No air monitoring
Idaho Madison County No air monitoring
Idaho Minidoka County No air monitoring
Idaho Nez Perce County No air monitoring
Idaho Oneida County No air monitoring
Idaho Owyhee County No air monitoring
Idaho Payette County No air monitoring
Idaho Power County No air monitoring
Idaho Shoshone County No air monitoring
Idaho Teton County No air monitoring
Idaho Twin Falls County No air monitoring
Idaho Valley County No air monitoring
Idaho Washington County No air monitoring
Illinois Adams County 65ppb
Illinois Alexander County No air monitoring
Illinois Bond County No air monitoring
Illinois Boone County No air monitoring
Illinois Brown County No air monitoring
Illinois Bureau County No air monitoring
Illinois Calhoun County No air monitoring
Illinois Carroll County No air monitoring
Illinois Cass County No air monitoring
Illinois Champaign County 68ppb
Illinois Christian County No air monitoring
Illinois Clark County 66ppb
Illinois Clay County No air monitoring
Illinois Clinton County No air monitoring
Illinois Coles County No air monitoring
Illinois Cook County 77ppb
Illinois Crawford County No air monitoring
Illinois Cumberland County No air monitoring
Illinois De Witt County No air monitoring
Illinois DeKalb County No air monitoring
Illinois Douglas County No air monitoring
Illinois DuPage County 73ppb
Illinois Edgar County No air monitoring
Illinois Edwards County No air monitoring
Illinois Effingham County 68ppb
Illinois Fayette County No air monitoring
Illinois Ford County No air monitoring
Illinois Franklin County No air monitoring
Illinois Fulton County No air monitoring
Illinois Gallatin County No air monitoring
Illinois Greene County No air monitoring
Illinois Grundy County No air monitoring
Illinois Hamilton County 68ppb
Illinois Hancock County No air monitoring
Illinois Hardin County No air monitoring
Illinois Henderson County No air monitoring
Illinois Henry County No air monitoring
Illinois Illinois No air monitoring
Illinois Iroquois County No air monitoring
Illinois Jackson County No air monitoring
Illinois Jasper County No air monitoring
Illinois Jefferson County No air monitoring
Illinois Jersey County 73ppb
Illinois Jo Daviess County 66ppb
Illinois Johnson County No air monitoring
Illinois Kane County 74ppb
Illinois Kankakee County No air monitoring
Illinois Kendall County No air monitoring
Illinois Knox County No air monitoring
Illinois La Salle County No air monitoring
Illinois Lake County 76ppb
Illinois Lawrence County No air monitoring
Illinois Lee County No air monitoring
Illinois Livingston County No air monitoring
Illinois Logan County No air monitoring
Illinois Macon County 69ppb
Illinois Macoupin County 66ppb
Illinois Madison County 74ppb
Illinois Marion County No air monitoring
Illinois Marshall County No air monitoring
Illinois Mason County No air monitoring
Illinois Massac County No air monitoring
Illinois McDonough County No air monitoring
Illinois McHenry County 74ppb
Illinois McLean County 69ppb
Illinois Menard County No air monitoring
Illinois Mercer County No air monitoring
Illinois Monroe County No air monitoring
Illinois Montgomery County No air monitoring
Illinois Morgan County No air monitoring
Illinois Moultrie County No air monitoring
Illinois Ogle County No air monitoring
Illinois Peoria County 69ppb
Illinois Perry County No air monitoring
Illinois Piatt County No air monitoring
Illinois Pike County No air monitoring
Illinois Pope County No air monitoring
Illinois Pulaski County No air monitoring
Illinois Putnam County No air monitoring
Illinois Randolph County 71ppb
Illinois Richland County No air monitoring
Illinois Rock Island County 68ppb
Illinois Saline County No air monitoring
Illinois Sangamon County 66ppb
Illinois Schuyler County No air monitoring
Illinois Scott County No air monitoring
Illinois Shelby County No air monitoring
Illinois St. Clair County 70ppb
Illinois Stark County No air monitoring
Illinois Stephenson County No air monitoring
Illinois Tazewell County No air monitoring
Illinois Union County No air monitoring
Illinois Vermilion County No air monitoring
Illinois Wabash County No air monitoring
Illinois Warren County No air monitoring
Illinois Washington County No air monitoring
Illinois Wayne County No air monitoring
Illinois White County No air monitoring
Illinois Whiteside County No air monitoring
Illinois Will County 69ppb
Illinois Williamson County No air monitoring
Illinois Winnebago County 71ppb
Illinois Woodford County No air monitoring
Indiana Adams County No air monitoring
Indiana Allen County 69ppb
Indiana Bartholomew County 68ppb
Indiana Benton County No air monitoring
Indiana Blackford County No air monitoring
Indiana Boone County 69ppb
Indiana Brown County 62ppb
Indiana Carroll County 68ppb
Indiana Cass County No air monitoring
Indiana Clark County 66ppb
Indiana Clay County No air monitoring
Indiana Clinton County No air monitoring
Indiana Crawford County No air monitoring
Indiana Daviess County No air monitoring
Indiana De Kalb County No air monitoring
Indiana Dearborn County No air monitoring
Indiana Decatur County No air monitoring
Indiana Delaware County 67ppb
Indiana Dubois County No air monitoring
Indiana Elkhart County 64ppb
Indiana Fayette County No air monitoring
Indiana Floyd County 66ppb
Indiana Fountain County No air monitoring
Indiana Franklin County No air monitoring
Indiana Fulton County No air monitoring
Indiana Gibson County No air monitoring
Indiana Grant County No air monitoring
Indiana Greene County 68ppb
Indiana Hamilton County 67ppb
Indiana Hancock County No air monitoring
Indiana Harrison County No air monitoring
Indiana Hendricks County 65ppb
Indiana Henry County No air monitoring
Indiana Howard County 69ppb
Indiana Huntington County No air monitoring
Indiana Indiana No air monitoring
Indiana Jackson County No air monitoring
Indiana Jasper County No air monitoring
Indiana Jay County No air monitoring
Indiana Jefferson County No air monitoring
Indiana Jennings County No air monitoring
Indiana Johnson County No air monitoring
Indiana Knox County 69ppb
Indiana Kosciusko County No air monitoring
Indiana La Porte County 72ppb
Indiana Lagrange County No air monitoring
Indiana Lake County 72ppb
Indiana Lawrence County No air monitoring
Indiana Madison County 69ppb
Indiana Marion County 71ppb
Indiana Marshall County No air monitoring
Indiana Martin County No air monitoring
Indiana Miami County No air monitoring
Indiana Monroe County No air monitoring
Indiana Montgomery County No air monitoring
Indiana Morgan County No air monitoring
Indiana Newton County No air monitoring
Indiana Noble County No air monitoring
Indiana Ohio County No air monitoring
Indiana Orange County No air monitoring
Indiana Owen County No air monitoring
Indiana Parke County No air monitoring
Indiana Perry County 65ppb
Indiana Pike County No air monitoring
Indiana Porter County 74ppb
Indiana Posey County 64ppb
Indiana Pulaski County No air monitoring
Indiana Putnam County No air monitoring
Indiana Randolph County No air monitoring
Indiana Ripley County No air monitoring
Indiana Rush County No air monitoring
Indiana Scott County No air monitoring
Indiana Shelby County 67ppb
Indiana Spencer County No air monitoring
Indiana St. Joseph County 70ppb
Indiana Starke County No air monitoring
Indiana Steuben County No air monitoring
Indiana Sullivan County No air monitoring
Indiana Switzerland County No air monitoring
Indiana Tippecanoe County No air monitoring
Indiana Tipton County No air monitoring
Indiana Union County No air monitoring
Indiana Vanderburgh County 68ppb
Indiana Vermillion County No air monitoring
Indiana Vigo County 67ppb
Indiana Wabash County 66ppb
Indiana Warren County No air monitoring
Indiana Warrick County 69ppb
Indiana Washington County No air monitoring
Indiana Wayne County No air monitoring
Indiana Wells County No air monitoring
Indiana White County No air monitoring
Indiana Whitley County No air monitoring
Iowa Adair County No air monitoring
Iowa Adams County No air monitoring
Iowa Allamakee County No air monitoring
Iowa Appanoose County No air monitoring
Iowa Audubon County No air monitoring
Iowa Benton County No air monitoring
Iowa Black Hawk County No air monitoring
Iowa Boone County No air monitoring
Iowa Bremer County 66ppb
Iowa Buchanan County No air monitoring
Iowa Buena Vista County No air monitoring
Iowa Butler County No air monitoring
Iowa Calhoun County No air monitoring
Iowa Carroll County No air monitoring
Iowa Cass County No air monitoring
Iowa Cedar County No air monitoring
Iowa Cerro Gordo County No air monitoring
Iowa Cherokee County No air monitoring
Iowa Chickasaw County No air monitoring
Iowa Clarke County No air monitoring
Iowa Clay County No air monitoring
Iowa Clayton County No air monitoring
Iowa Clinton County 68ppb
Iowa Crawford County No air monitoring
Iowa Dallas County No air monitoring
Iowa Davis County No air monitoring
Iowa Decatur County No air monitoring
Iowa Delaware County No air monitoring
Iowa Des Moines County No air monitoring
Iowa Dickinson County No air monitoring
Iowa Dubuque County No air monitoring
Iowa Emmet County No air monitoring
Iowa Fayette County No air monitoring
Iowa Floyd County No air monitoring
Iowa Franklin County No air monitoring
Iowa Fremont County No air monitoring
Iowa Greene County No air monitoring
Iowa Grundy County No air monitoring
Iowa Guthrie County No air monitoring
Iowa Hamilton County No air monitoring
Iowa Hancock County No air monitoring
Iowa Hardin County No air monitoring
Iowa Harrison County 66ppb
Iowa Henry County No air monitoring
Iowa Howard County No air monitoring
Iowa Humboldt County No air monitoring
Iowa Ida County No air monitoring
Iowa Iowa No air monitoring
Iowa Iowa County No air monitoring
Iowa Jackson County No air monitoring
Iowa Jasper County No air monitoring
Iowa Jefferson County No air monitoring
Iowa Johnson County No air monitoring
Iowa Jones County No air monitoring
Iowa Keokuk County No air monitoring
Iowa Kossuth County No air monitoring
Iowa Lee County No air monitoring
Iowa Linn County 67ppb
Iowa Louisa County No air monitoring
Iowa Lucas County No air monitoring
Iowa Lyon County No air monitoring
Iowa Madison County No air monitoring
Iowa Mahaska County No air monitoring
Iowa Marion County No air monitoring
Iowa Marshall County No air monitoring
Iowa Mills County No air monitoring
Iowa Mitchell County No air monitoring
Iowa Monona County No air monitoring
Iowa Monroe County No air monitoring
Iowa Montgomery County 62ppb
Iowa Muscatine County No air monitoring
Iowa O'Brien County No air monitoring
Iowa Osceola County No air monitoring
Iowa Page County No air monitoring
Iowa Palo Alto County 66ppb
Iowa Plymouth County No air monitoring
Iowa Pocahontas County No air monitoring
Iowa Polk County 65ppb
Iowa Pottawattamie County No air monitoring
Iowa Poweshiek County No air monitoring
Iowa Ringgold County No air monitoring
Iowa Sac County No air monitoring
Iowa Scott County 67ppb
Iowa Shelby County No air monitoring
Iowa Sioux County No air monitoring
Iowa Story County No air monitoring
Iowa Tama County No air monitoring
Iowa Taylor County No air monitoring
Iowa Union County No air monitoring
Iowa Van Buren County 59ppb
Iowa Wapello County No air monitoring
Iowa Warren County No air monitoring
Iowa Washington County No air monitoring
Iowa Wayne County No air monitoring
Iowa Webster County No air monitoring
Iowa Winnebago County No air monitoring
Iowa Winneshiek County No air monitoring
Iowa Woodbury County No air monitoring
Iowa Worth County No air monitoring
Iowa Wright County No air monitoring
Kansas Allen County No air monitoring
Kansas Anderson County No air monitoring
Kansas Atchison County No air monitoring
Kansas Barber County No air monitoring
Kansas Barton County No air monitoring
Kansas Bourbon County No air monitoring
Kansas Brown County No air monitoring
Kansas Butler County No air monitoring
Kansas Chase County No air monitoring
Kansas Chautauqua County No air monitoring
Kansas Cherokee County No air monitoring
Kansas Cheyenne County No air monitoring
Kansas Clark County No air monitoring
Kansas Clay County No air monitoring
Kansas Cloud County No air monitoring
Kansas Coffey County No air monitoring
Kansas Comanche County No air monitoring
Kansas Cowley County No air monitoring
Kansas Crawford County No air monitoring
Kansas Decatur County No air monitoring
Kansas Dickinson County No air monitoring
Kansas Doniphan County No air monitoring
Kansas Douglas County No air monitoring
Kansas Edwards County No air monitoring
Kansas Elk County No air monitoring
Kansas Ellis County No air monitoring
Kansas Ellsworth County No air monitoring
Kansas Finney County No air monitoring
Kansas Ford County No air monitoring
Kansas Franklin County No air monitoring
Kansas Geary County No air monitoring
Kansas Gove County No air monitoring
Kansas Graham County No air monitoring
Kansas Grant County No air monitoring
Kansas Gray County No air monitoring
Kansas Greeley County No air monitoring
Kansas Greenwood County No air monitoring
Kansas Hamilton County No air monitoring
Kansas Harper County No air monitoring
Kansas Harvey County No air monitoring
Kansas Haskell County No air monitoring
Kansas Hodgeman County No air monitoring
Kansas Jackson County No air monitoring
Kansas Jefferson County No air monitoring
Kansas Jewell County No air monitoring
Kansas Johnson County 66ppb
Kansas Kansas No air monitoring
Kansas Kearny County No air monitoring
Kansas Kingman County No air monitoring
Kansas Kiowa County No air monitoring
Kansas Labette County No air monitoring
Kansas Lane County No air monitoring
Kansas Leavenworth County 66ppb
Kansas Lincoln County No air monitoring
Kansas Linn County No air monitoring
Kansas Logan County No air monitoring
Kansas Lyon County No air monitoring
Kansas Marion County No air monitoring
Kansas Marshall County No air monitoring
Kansas McPherson County No air monitoring
Kansas Meade County No air monitoring
Kansas Miami County No air monitoring
Kansas Mitchell County No air monitoring
Kansas Montgomery County No air monitoring
Kansas Morris County No air monitoring
Kansas Morton County No air monitoring
Kansas Nemaha County No air monitoring
Kansas Neosho County 63ppb
Kansas Ness County No air monitoring
Kansas Norton County No air monitoring
Kansas Osage County No air monitoring
Kansas Osborne County No air monitoring
Kansas Ottawa County No air monitoring
Kansas Pawnee County No air monitoring
Kansas Phillips County No air monitoring
Kansas Pottawatomie County No air monitoring
Kansas Pratt County No air monitoring
Kansas Rawlins County No air monitoring
Kansas Reno County No air monitoring
Kansas Republic County No air monitoring
Kansas Rice County No air monitoring
Kansas Riley County No air monitoring
Kansas Rooks County No air monitoring
Kansas Rush County No air monitoring
Kansas Russell County No air monitoring
Kansas Saline County No air monitoring
Kansas Scott County No air monitoring
Kansas Sedgwick County 66ppb
Kansas Seward County No air monitoring
Kansas Shawnee County 65ppb
Kansas Sheridan County No air monitoring
Kansas Sherman County No air monitoring
Kansas Smith County No air monitoring
Kansas Stafford County No air monitoring
Kansas Stanton County No air monitoring
Kansas Stevens County No air monitoring
Kansas Sumner County 65ppb
Kansas Thomas County No air monitoring
Kansas Trego County 65ppb
Kansas Wabaunsee County No air monitoring
Kansas Wallace County No air monitoring
Kansas Washington County No air monitoring
Kansas Wichita County No air monitoring
Kansas Wilson County No air monitoring
Kansas Woodson County No air monitoring
Kansas Wyandotte County 70ppb
Kentucky Adair County No air monitoring
Kentucky Allen County No air monitoring
Kentucky Anderson County No air monitoring
Kentucky Ballard County No air monitoring
Kentucky Barren County No air monitoring
Kentucky Bath County No air monitoring
Kentucky Bell County 59ppb
Kentucky Boone County 68ppb
Kentucky Bourbon County No air monitoring
Kentucky Boyd County 61ppb
Kentucky Boyle County No air monitoring
Kentucky Bracken County No air monitoring
Kentucky Breathitt County No air monitoring
Kentucky Breckinridge County No air monitoring
Kentucky Bullitt County 67ppb
Kentucky Butler County No air monitoring
Kentucky Caldwell County No air monitoring
Kentucky Calloway County No air monitoring
Kentucky Campbell County 64ppb
Kentucky Carlisle County No air monitoring
Kentucky Carroll County No air monitoring
Kentucky Carter County 58ppb
Kentucky Casey County No air monitoring
Kentucky Christian County 63ppb
Kentucky Clark County No air monitoring
Kentucky Clay County No air monitoring
Kentucky Clinton County No air monitoring
Kentucky Crittenden County No air monitoring
Kentucky Cumberland County No air monitoring
Kentucky Daviess County No air monitoring
Kentucky Edmonson County 64ppb
Kentucky Elliott County No air monitoring
Kentucky Estill County No air monitoring
Kentucky Fayette County 66ppb
Kentucky Fleming County No air monitoring
Kentucky Floyd County No air monitoring
Kentucky Franklin County No air monitoring
Kentucky Fulton County No air monitoring
Kentucky Gallatin County No air monitoring
Kentucky Garrard County No air monitoring
Kentucky Grant County No air monitoring
Kentucky Graves County No air monitoring
Kentucky Grayson County No air monitoring
Kentucky Green County No air monitoring
Kentucky Greenup County 58ppb
Kentucky Hancock County 68ppb
Kentucky Hardin County 65ppb
Kentucky Harlan County No air monitoring
Kentucky Harrison County No air monitoring
Kentucky Hart County No air monitoring
Kentucky Henderson County No air monitoring
Kentucky Henry County No air monitoring
Kentucky Hickman County No air monitoring
Kentucky Hopkins County No air monitoring
Kentucky Jackson County No air monitoring
Kentucky Jefferson County 72ppb
Kentucky Jessamine County 66ppb
Kentucky Johnson County No air monitoring
Kentucky Kenton County No air monitoring
Kentucky Kentucky No air monitoring
Kentucky Knott County No air monitoring
Kentucky Knox County No air monitoring
Kentucky Larue County No air monitoring
Kentucky Laurel County No air monitoring
Kentucky Lawrence County No air monitoring
Kentucky Lee County No air monitoring
Kentucky Leslie County No air monitoring
Kentucky Letcher County No air monitoring
Kentucky Lewis County No air monitoring
Kentucky Lincoln County No air monitoring
Kentucky Livingston County 67ppb
Kentucky Logan County No air monitoring
Kentucky Lyon County No air monitoring
Kentucky Madison County No air monitoring
Kentucky Magoffin County No air monitoring
Kentucky Marion County No air monitoring
Kentucky Marshall County No air monitoring
Kentucky Martin County No air monitoring
Kentucky Mason County No air monitoring
Kentucky McCracken County No air monitoring
Kentucky McCreary County No air monitoring
Kentucky McLean County No air monitoring
Kentucky Meade County No air monitoring
Kentucky Menifee County No air monitoring
Kentucky Mercer County No air monitoring
Kentucky Metcalfe County No air monitoring
Kentucky Monroe County No air monitoring
Kentucky Montgomery County No air monitoring
Kentucky Morgan County 60ppb
Kentucky Muhlenberg County No air monitoring
Kentucky Nelson County No air monitoring
Kentucky Nicholas County No air monitoring
Kentucky Ohio County No air monitoring
Kentucky Oldham County 65ppb
Kentucky Owen County No air monitoring
Kentucky Owsley County No air monitoring
Kentucky Pendleton County No air monitoring
Kentucky Perry County 57ppb
Kentucky Pike County 57ppb
Kentucky Powell County No air monitoring
Kentucky Pulaski County 60ppb
Kentucky Robertson County No air monitoring
Kentucky Rockcastle County No air monitoring
Kentucky Rowan County No air monitoring
Kentucky Russell County No air monitoring
Kentucky Scott County No air monitoring
Kentucky Shelby County No air monitoring
Kentucky Simpson County 66ppb
Kentucky Spencer County No air monitoring
Kentucky Taylor County No air monitoring
Kentucky Todd County No air monitoring
Kentucky Trigg County No air monitoring
Kentucky Trimble County No air monitoring
Kentucky Union County No air monitoring
Kentucky Warren County 63ppb
Kentucky Washington County 63ppb
Kentucky Wayne County No air monitoring
Kentucky Webster County No air monitoring
Kentucky Whitley County No air monitoring
Kentucky Wolfe County No air monitoring
Kentucky Woodford County No air monitoring
Louisiana Acadia Parish No air monitoring
Louisiana Allen Parish No air monitoring
Louisiana Ascension Parish 66ppb
Louisiana Assumption Parish No air monitoring
Louisiana Avoyelles Parish No air monitoring
Louisiana Beauregard Parish No air monitoring
Louisiana Bienville Parish No air monitoring
Louisiana Bossier Parish 59ppb
Louisiana Caddo Parish 64ppb
Louisiana Calcasieu Parish 65ppb
Louisiana Caldwell Parish No air monitoring
Louisiana Cameron Parish No air monitoring
Louisiana Catahoula Parish No air monitoring
Louisiana Claiborne Parish No air monitoring
Louisiana Concordia Parish No air monitoring
Louisiana De Soto Parish No air monitoring
Louisiana East Baton Rouge Parish 68ppb
Louisiana East Carroll Parish No air monitoring
Louisiana East Feliciana Parish No air monitoring
Louisiana Evangeline Parish No air monitoring
Louisiana Franklin Parish No air monitoring
Louisiana Grant Parish No air monitoring
Louisiana Iberia Parish No air monitoring
Louisiana Iberville Parish 72ppb
Louisiana Jackson Parish No air monitoring
Louisiana Jefferson Davis Parish No air monitoring
Louisiana Jefferson Parish 64ppb
Louisiana La Salle Parish No air monitoring
Louisiana Lafayette Parish 64ppb
Louisiana Lafourche Parish 61ppb
Louisiana Lincoln Parish No air monitoring
Louisiana Livingston Parish 65ppb
Louisiana Louisiana No air monitoring
Louisiana Madison Parish No air monitoring
Louisiana Morehouse Parish No air monitoring
Louisiana Natchitoches Parish No air monitoring
Louisiana Orleans Parish No air monitoring
Louisiana Ouachita Parish 61ppb
Louisiana Plaquemines Parish No air monitoring
Louisiana Pointe Coupee Parish 65ppb
Louisiana Rapides Parish No air monitoring
Louisiana Red River Parish No air monitoring
Louisiana Richland Parish No air monitoring
Louisiana Sabine Parish No air monitoring
Louisiana St. Bernard Parish 61ppb
Louisiana St. Charles Parish No air monitoring
Louisiana St. Helena Parish No air monitoring
Louisiana St. James Parish 61ppb
Louisiana St. John the Baptist Parish 63ppb
Louisiana St. Landry Parish No air monitoring
Louisiana St. Martin Parish 64ppb
Louisiana St. Mary Parish No air monitoring
Louisiana St. Tammany Parish 63ppb
Louisiana Tangipahoa Parish No air monitoring
Louisiana Tensas Parish No air monitoring
Louisiana Terrebonne Parish No air monitoring
Louisiana Union Parish No air monitoring
Louisiana Vermilion Parish No air monitoring
Louisiana Vernon Parish No air monitoring
Louisiana Washington Parish No air monitoring
Louisiana Webster Parish No air monitoring
Louisiana West Baton Rouge Parish 69ppb
Louisiana West Carroll Parish No air monitoring
Louisiana West Feliciana Parish No air monitoring
Louisiana Winn Parish No air monitoring
Maine Androscoggin County 58ppb
Maine Aroostook County 50ppb
Maine Cumberland County 62ppb
Maine Franklin County No air monitoring
Maine Hancock County 66ppb
Maine Kennebec County 55ppb
Maine Knox County 59ppb
Maine Lincoln County No air monitoring
Maine Maine No air monitoring
Maine Oxford County 55ppb
Maine Penobscot County 59ppb
Maine Piscataquis County No air monitoring
Maine Sagadahoc County No air monitoring
Maine Somerset County No air monitoring
Maine Waldo County No air monitoring
Maine Washington County No air monitoring
Maine York County 64ppb
Maryland Allegany County No air monitoring
Maryland Anne Arundel County 66ppb
Maryland Baltimore city No air monitoring
Maryland Baltimore County 73ppb
Maryland Calvert County 62ppb
Maryland Caroline County No air monitoring
Maryland Carroll County 67ppb
Maryland Cecil County 67ppb
Maryland Charles County 65ppb
Maryland Dorchester County 66ppb
Maryland Frederick County 67ppb
Maryland Garrett County 62ppb
Maryland Harford County 71ppb
Maryland Howard County No air monitoring
Maryland Kent County 68ppb
Maryland Maryland No air monitoring
Maryland Montgomery County 66ppb
Maryland Prince George's County 69ppb
Maryland Queen Anne's County No air monitoring
Maryland Somerset County No air monitoring
Maryland St. Mary's County No air monitoring
Maryland Talbot County No air monitoring
Maryland Washington County 64ppb
Maryland Wicomico County No air monitoring
Maryland Worcester County No air monitoring
Massachusetts Barnstable County 65ppb
Massachusetts Berkshire County 63ppb
Massachusetts Bristol County 66ppb
Massachusetts Dukes County 67ppb
Massachusetts Essex County 67ppb
Massachusetts Franklin County 60ppb
Massachusetts Hampden County 65ppb
Massachusetts Hampshire County 63ppb
Massachusetts Massachusetts No air monitoring
Massachusetts Middlesex County 62ppb
Massachusetts Nantucket County No air monitoring
Massachusetts Norfolk County 64ppb
Massachusetts Plymouth County 63ppb
Massachusetts Suffolk County 64ppb
Massachusetts Worcester County 60ppb
Michigan Alcona County No air monitoring
Michigan Alger County No air monitoring
Michigan Allegan County 75ppb
Michigan Alpena County No air monitoring
Michigan Antrim County No air monitoring
Michigan Arenac County No air monitoring
Michigan Baraga County No air monitoring
Michigan Barry County No air monitoring
Michigan Bay County No air monitoring
Michigan Benzie County 68ppb
Michigan Berrien County 73ppb
Michigan Branch County No air monitoring
Michigan Calhoun County No air monitoring
Michigan Cass County 70ppb
Michigan Charlevoix County No air monitoring
Michigan Cheboygan County No air monitoring
Michigan Chippewa County No air monitoring
Michigan Clare County No air monitoring
Michigan Clinton County 65ppb
Michigan Crawford County No air monitoring
Michigan Delta County No air monitoring
Michigan Dickinson County No air monitoring
Michigan Eaton County No air monitoring
Michigan Emmet County No air monitoring
Michigan Genesee County 68ppb
Michigan Gladwin County No air monitoring
Michigan Gogebic County No air monitoring
Michigan Grand Traverse County No air monitoring
Michigan Gratiot County No air monitoring
Michigan Hillsdale County No air monitoring
Michigan Houghton County No air monitoring
Michigan Huron County 69ppb
Michigan Ingham County 64ppb
Michigan Ionia County No air monitoring
Michigan Iosco County No air monitoring
Michigan Iron County No air monitoring
Michigan Isabella County No air monitoring
Michigan Jackson County No air monitoring
Michigan Kalamazoo County 67ppb
Michigan Kalkaska County No air monitoring
Michigan Kent County 70ppb
Michigan Keweenaw County No air monitoring
Michigan Lake County No air monitoring
Michigan Lapeer County No air monitoring
Michigan Leelanau County No air monitoring
Michigan Lenawee County 67ppb
Michigan Livingston County No air monitoring
Michigan Luce County No air monitoring
Michigan Mackinac County No air monitoring
Michigan Macomb County 69ppb
Michigan Manistee County 70ppb
Michigan Marquette County No air monitoring
Michigan Mason County 67ppb
Michigan Mecosta County No air monitoring
Michigan Menominee County No air monitoring
Michigan Michigan 66ppb
Michigan Michigan No air monitoring
Michigan Midland County No air monitoring
Michigan Monroe County No air monitoring
Michigan Montcalm County No air monitoring
Michigan Montmorency County No air monitoring
Michigan Muskegon County 77ppb
Michigan Newaygo County No air monitoring
Michigan Oakland County 69ppb
Michigan Oceana County No air monitoring
Michigan Ogemaw County No air monitoring
Michigan Ontonagon County No air monitoring
Michigan Osceola County No air monitoring
Michigan Oscoda County No air monitoring
Michigan Otsego County No air monitoring
Michigan Ottawa County 70ppb
Michigan Presque Isle County No air monitoring
Michigan Roscommon County No air monitoring
Michigan Saginaw County No air monitoring
Michigan Sanilac County No air monitoring
Michigan Schoolcraft County 66ppb
Michigan Shiawassee County No air monitoring
Michigan St. Clair County 70ppb
Michigan St. Joseph County No air monitoring
Michigan Tuscola County 69ppb
Michigan Van Buren County No air monitoring
Michigan Washtenaw County 68ppb
Michigan Wayne County 71ppb
Michigan Wexford County 69ppb
Minnesota Aitkin County No air monitoring
Minnesota Anoka County 67ppb
Minnesota Becker County No air monitoring
Minnesota Beltrami County No air monitoring
Minnesota Benton County No air monitoring
Minnesota Big Stone County No air monitoring
Minnesota Blue Earth County No air monitoring
Minnesota Brown County No air monitoring
Minnesota Carlton County No air monitoring
Minnesota Carver County No air monitoring
Minnesota Cass County No air monitoring
Minnesota Chippewa County No air monitoring
Minnesota Chisago County No air monitoring
Minnesota Clay County No air monitoring
Minnesota Clearwater County No air monitoring
Minnesota Cook County No air monitoring
Minnesota Cottonwood County No air monitoring
Minnesota Crow Wing County 62ppb
Minnesota Dakota County No air monitoring
Minnesota Dodge County No air monitoring
Minnesota Douglas County No air monitoring
Minnesota Faribault County No air monitoring
Minnesota Fillmore County No air monitoring
Minnesota Freeborn County No air monitoring
Minnesota Goodhue County 64ppb
Minnesota Grant County No air monitoring
Minnesota Hennepin County 62ppb
Minnesota Houston County No air monitoring
Minnesota Hubbard County No air monitoring
Minnesota Isanti County No air monitoring
Minnesota Itasca County No air monitoring
Minnesota Jackson County No air monitoring
Minnesota Kanabec County No air monitoring
Minnesota Kandiyohi County No air monitoring
Minnesota Kittson County No air monitoring
Minnesota Koochiching County No air monitoring
Minnesota Lac qui Parle County No air monitoring
Minnesota Lake County No air monitoring
Minnesota Lake of the Woods County No air monitoring
Minnesota Le Sueur County No air monitoring
Minnesota Lincoln County No air monitoring
Minnesota Lyon County 65ppb
Minnesota Mahnomen County No air monitoring
Minnesota Marshall County No air monitoring
Minnesota Martin County No air monitoring
Minnesota McLeod County No air monitoring
Minnesota Meeker County No air monitoring
Minnesota Mille Lacs County No air monitoring
Minnesota Minnesota No air monitoring
Minnesota Morrison County No air monitoring
Minnesota Mower County No air monitoring
Minnesota Murray County No air monitoring
Minnesota Nicollet County No air monitoring
Minnesota Nobles County No air monitoring
Minnesota Norman County No air monitoring
Minnesota Olmsted County 66ppb
Minnesota Otter Tail County No air monitoring
Minnesota Pennington County No air monitoring
Minnesota Pine County No air monitoring
Minnesota Pipestone County No air monitoring
Minnesota Polk County No air monitoring
Minnesota Pope County No air monitoring
Minnesota Ramsey County No air monitoring
Minnesota Red Lake County No air monitoring
Minnesota Redwood County No air monitoring
Minnesota Renville County No air monitoring
Minnesota Rice County No air monitoring
Minnesota Rock County No air monitoring
Minnesota Roseau County No air monitoring
Minnesota Scott County 65ppb
Minnesota Sherburne County No air monitoring
Minnesota Sibley County No air monitoring
Minnesota St. Louis County 60ppb
Minnesota Stearns County No air monitoring
Minnesota Steele County No air monitoring
Minnesota Stevens County No air monitoring
Minnesota Swift County No air monitoring
Minnesota Todd County No air monitoring
Minnesota Traverse County No air monitoring
Minnesota Wabasha County No air monitoring
Minnesota Wadena County No air monitoring
Minnesota Waseca County No air monitoring
Minnesota Washington County 68ppb
Minnesota Watonwan County No air monitoring
Minnesota Wilkin County No air monitoring
Minnesota Winona County No air monitoring
Minnesota Wright County 67ppb
Minnesota Yellow Medicine County No air monitoring
Mississippi Adams County No air monitoring
Mississippi Alcorn County No air monitoring
Mississippi Amite County No air monitoring
Mississippi Attala County No air monitoring
Mississippi Benton County No air monitoring
Mississippi Bolivar County 65ppb
Mississippi Calhoun County No air monitoring
Mississippi Carroll County No air monitoring
Mississippi Chickasaw County No air monitoring
Mississippi Choctaw County No air monitoring
Mississippi Claiborne County No air monitoring
Mississippi Clarke County No air monitoring
Mississippi Clay County No air monitoring
Mississippi Coahoma County No air monitoring
Mississippi Copiah County No air monitoring
Mississippi Covington County No air monitoring
Mississippi DeSoto County 70ppb
Mississippi Forrest County No air monitoring
Mississippi Franklin County No air monitoring
Mississippi George County No air monitoring
Mississippi Greene County No air monitoring
Mississippi Grenada County No air monitoring
Mississippi Hancock County 61ppb
Mississippi Harrison County 63ppb
Mississippi Hinds County 61ppb
Mississippi Holmes County No air monitoring
Mississippi Humphreys County No air monitoring
Mississippi Issaquena County No air monitoring
Mississippi Itawamba County No air monitoring
Mississippi Jackson County 63ppb
Mississippi Jasper County No air monitoring
Mississippi Jefferson County No air monitoring
Mississippi Jefferson Davis County No air monitoring
Mississippi Jones County No air monitoring
Mississippi Kemper County No air monitoring
Mississippi Lafayette County No air monitoring
Mississippi Lamar County No air monitoring
Mississippi Lauderdale County 57ppb
Mississippi Lawrence County No air monitoring
Mississippi Leake County No air monitoring
Mississippi Lee County 63ppb
Mississippi Leflore County No air monitoring
Mississippi Lincoln County No air monitoring
Mississippi Lowndes County No air monitoring
Mississippi Madison County No air monitoring
Mississippi Marion County No air monitoring
Mississippi Marshall County No air monitoring
Mississippi Mississippi No air monitoring
Mississippi Monroe County No air monitoring
Mississippi Montgomery County No air monitoring
Mississippi Neshoba County No air monitoring
Mississippi Newton County No air monitoring
Mississippi Noxubee County No air monitoring
Mississippi Oktibbeha County No air monitoring
Mississippi Panola County No air monitoring
Mississippi Pearl River County No air monitoring
Mississippi Perry County No air monitoring
Mississippi Pike County No air monitoring
Mississippi Pontotoc County No air monitoring
Mississippi Prentiss County No air monitoring
Mississippi Quitman County No air monitoring
Mississippi Rankin County No air monitoring
Mississippi Scott County No air monitoring
Mississippi Sharkey County No air monitoring
Mississippi Simpson County No air monitoring
Mississippi Smith County No air monitoring
Mississippi Stone County No air monitoring
Mississippi Sunflower County No air monitoring
Mississippi Tallahatchie County No air monitoring
Mississippi Tate County No air monitoring
Mississippi Tippah County No air monitoring
Mississippi Tishomingo County No air monitoring
Mississippi Tunica County No air monitoring
Mississippi Union County No air monitoring
Mississippi Walthall County No air monitoring
Mississippi Warren County No air monitoring
Mississippi Washington County No air monitoring
Mississippi Wayne County No air monitoring
Mississippi Webster County No air monitoring
Mississippi Wilkinson County No air monitoring
Mississippi Winston County No air monitoring
Mississippi Yalobusha County 60ppb
Mississippi Yazoo County No air monitoring
Missouri Adair County No air monitoring
Missouri Andrew County 64ppb
Missouri Atchison County No air monitoring
Missouri Audrain County No air monitoring
Missouri Barry County No air monitoring
Missouri Barton County No air monitoring
Missouri Bates County No air monitoring
Missouri Benton County No air monitoring
Missouri Bollinger County No air monitoring
Missouri Boone County 62ppb
Missouri Buchanan County No air monitoring
Missouri Butler County No air monitoring
Missouri Caldwell County No air monitoring
Missouri Callaway County 63ppb
Missouri Camden County No air monitoring
Missouri Cape Girardeau County No air monitoring
Missouri Carroll County No air monitoring
Missouri Carter County No air monitoring
Missouri Cass County 66ppb
Missouri Cedar County 66ppb
Missouri Chariton County No air monitoring
Missouri Christian County No air monitoring
Missouri Clark County No air monitoring
Missouri Clay County 71ppb
Missouri Clinton County 68ppb
Missouri Cole County No air monitoring
Missouri Cooper County No air monitoring
Missouri Crawford County No air monitoring
Missouri Dade County No air monitoring
Missouri Dallas County No air monitoring
Missouri Daviess County No air monitoring
Missouri DeKalb County No air monitoring
Missouri Dent County No air monitoring
Missouri Douglas County No air monitoring
Missouri Dunklin County No air monitoring
Missouri Franklin County No air monitoring
Missouri Gasconade County No air monitoring
Missouri Gentry County No air monitoring
Missouri Greene County 66ppb
Missouri Grundy County No air monitoring
Missouri Harrison County No air monitoring
Missouri Henry County No air monitoring
Missouri Hickory County No air monitoring
Missouri Holt County No air monitoring
Missouri Howard County No air monitoring
Missouri Howell County No air monitoring
Missouri Iron County No air monitoring
Missouri Jackson County No air monitoring
Missouri Jasper County 67ppb
Missouri Jefferson County 72ppb
Missouri Johnson County No air monitoring
Missouri Knox County No air monitoring
Missouri Laclede County No air monitoring
Missouri Lafayette County No air monitoring
Missouri Lawrence County No air monitoring
Missouri Lewis County No air monitoring
Missouri Lincoln County 68ppb
Missouri Linn County No air monitoring
Missouri Livingston County No air monitoring
Missouri Macon County No air monitoring
Missouri Madison County No air monitoring
Missouri Maries County No air monitoring
Missouri Marion County No air monitoring
Missouri McDonald County No air monitoring
Missouri Mercer County No air monitoring
Missouri Miller County No air monitoring
Missouri Mississippi County No air monitoring
Missouri Missouri No air monitoring
Missouri Moniteau County No air monitoring
Missouri Monroe County 59ppb
Missouri Montgomery County No air monitoring
Missouri Morgan County No air monitoring
Missouri New Madrid County No air monitoring
Missouri Newton County No air monitoring
Missouri Nodaway County No air monitoring
Missouri Oregon County No air monitoring
Missouri Osage County No air monitoring
Missouri Ozark County No air monitoring
Missouri Pemiscot County No air monitoring
Missouri Perry County 71ppb
Missouri Pettis County No air monitoring
Missouri Phelps County No air monitoring
Missouri Pike County No air monitoring
Missouri Platte County No air monitoring
Missouri Polk County No air monitoring
Missouri Pulaski County No air monitoring
Missouri Putnam County No air monitoring
Missouri Ralls County No air monitoring
Missouri Randolph County No air monitoring
Missouri Ray County No air monitoring
Missouri Reynolds County No air monitoring
Missouri Ripley County No air monitoring
Missouri Saline County No air monitoring
Missouri Schuyler County No air monitoring
Missouri Scotland County No air monitoring
Missouri Scott County No air monitoring
Missouri Shannon County No air monitoring
Missouri Shelby County No air monitoring
Missouri St. Charles County 72ppb
Missouri St. Clair County No air monitoring
Missouri St. Francois County No air monitoring
Missouri St. Louis city 71ppb
Missouri St. Louis County 71ppb
Missouri Ste. Genevieve County 68ppb
Missouri Stoddard County No air monitoring
Missouri Stone County No air monitoring
Missouri Sullivan County No air monitoring
Missouri Taney County No air monitoring
Missouri Texas County No air monitoring
Missouri Vernon County No air monitoring
Missouri Warren County No air monitoring
Missouri Washington County No air monitoring
Missouri Wayne County No air monitoring
Missouri Webster County No air monitoring
Missouri Worth County No air monitoring
Missouri Wright County No air monitoring
Montana Beaverhead County No air monitoring
Montana Big Horn County No air monitoring
Montana Blaine County No air monitoring
Montana Broadwater County No air monitoring
Montana Carbon County No air monitoring
Montana Carter County No air monitoring
Montana Cascade County No air monitoring
Montana Chouteau County No air monitoring
Montana Custer County No air monitoring
Montana Daniels County No air monitoring
Montana Dawson County No air monitoring
Montana Deer Lodge County No air monitoring
Montana Fallon County No air monitoring
Montana Fergus County 63ppb
Montana Flathead County 55ppb
Montana Gallatin County No air monitoring
Montana Garfield County No air monitoring
Montana Glacier County No air monitoring
Montana Golden Valley County No air monitoring
Montana Granite County No air monitoring
Montana Hill County No air monitoring
Montana Jefferson County No air monitoring
Montana Judith Basin County No air monitoring
Montana Lake County No air monitoring
Montana Lewis and Clark County 61ppb
Montana Liberty County No air monitoring
Montana Lincoln County No air monitoring
Montana Madison County No air monitoring
Montana McCone County No air monitoring
Montana Meagher County No air monitoring
Montana Mineral County No air monitoring
Montana Missoula County 58ppb
Montana Montana No air monitoring
Montana Musselshell County No air monitoring
Montana Park County No air monitoring
Montana Petroleum County No air monitoring
Montana Phillips County 58ppb
Montana Pondera County No air monitoring
Montana Powder River County 62ppb
Montana Powell County No air monitoring
Montana Prairie County No air monitoring
Montana Ravalli County No air monitoring
Montana Richland County 63ppb
Montana Roosevelt County No air monitoring
Montana Rosebud County No air monitoring
Montana Sanders County No air monitoring
Montana Sheridan County No air monitoring
Montana Silver Bow County No air monitoring
Montana Stillwater County No air monitoring
Montana Sweet Grass County No air monitoring
Montana Teton County No air monitoring
Montana Toole County No air monitoring
Montana Treasure County No air monitoring
Montana Valley County No air monitoring
Montana Wheatland County No air monitoring
Montana Wibaux County No air monitoring
Montana Yellowstone County No air monitoring
Montana Yellowstone National Park No air monitoring
Nebraska Adams County No air monitoring
Nebraska Antelope County No air monitoring
Nebraska Arthur County No air monitoring
Nebraska Banner County No air monitoring
Nebraska Blaine County No air monitoring
Nebraska Boone County No air monitoring
Nebraska Box Butte County No air monitoring
Nebraska Boyd County No air monitoring
Nebraska Brown County No air monitoring
Nebraska Buffalo County No air monitoring
Nebraska Burt County No air monitoring
Nebraska Butler County No air monitoring
Nebraska Cass County No air monitoring
Nebraska Cedar County No air monitoring
Nebraska Chase County No air monitoring
Nebraska Cherry County No air monitoring
Nebraska Cheyenne County No air monitoring
Nebraska Clay County No air monitoring
Nebraska Colfax County No air monitoring
Nebraska Cuming County No air monitoring
Nebraska Custer County No air monitoring
Nebraska Dakota County No air monitoring
Nebraska Dawes County No air monitoring
Nebraska Dawson County No air monitoring
Nebraska Deuel County No air monitoring
Nebraska Dixon County No air monitoring
Nebraska Dodge County No air monitoring
Nebraska Douglas County 69ppb
Nebraska Dundy County No air monitoring
Nebraska Fillmore County No air monitoring
Nebraska Franklin County No air monitoring
Nebraska Frontier County No air monitoring
Nebraska Furnas County No air monitoring
Nebraska Gage County No air monitoring
Nebraska Garden County No air monitoring
Nebraska Garfield County No air monitoring
Nebraska Gosper County No air monitoring
Nebraska Grant County No air monitoring
Nebraska Greeley County No air monitoring
Nebraska Hall County No air monitoring
Nebraska Hamilton County No air monitoring
Nebraska Harlan County No air monitoring
Nebraska Hayes County No air monitoring
Nebraska Hitchcock County No air monitoring
Nebraska Holt County No air monitoring
Nebraska Hooker County No air monitoring
Nebraska Howard County No air monitoring
Nebraska Jefferson County No air monitoring
Nebraska Johnson County No air monitoring
Nebraska Kearney County No air monitoring
Nebraska Keith County No air monitoring
Nebraska Keya Paha County No air monitoring
Nebraska Kimball County No air monitoring
Nebraska Knox County 71ppb
Nebraska Lancaster County 60ppb
Nebraska Lincoln County No air monitoring
Nebraska Logan County No air monitoring
Nebraska Loup County No air monitoring
Nebraska Madison County No air monitoring
Nebraska McPherson County No air monitoring
Nebraska Merrick County No air monitoring
Nebraska Morrill County No air monitoring
Nebraska Nance County No air monitoring
Nebraska Nebraska No air monitoring
Nebraska Nemaha County No air monitoring
Nebraska Nuckolls County No air monitoring
Nebraska Otoe County No air monitoring
Nebraska Pawnee County No air monitoring
Nebraska Perkins County No air monitoring
Nebraska Phelps County No air monitoring
Nebraska Pierce County No air monitoring
Nebraska Platte County No air monitoring
Nebraska Polk County No air monitoring
Nebraska Red Willow County No air monitoring
Nebraska Richardson County No air monitoring
Nebraska Rock County No air monitoring
Nebraska Saline County No air monitoring
Nebraska Sarpy County No air monitoring
Nebraska Saunders County No air monitoring
Nebraska Scotts Bluff County No air monitoring
Nebraska Seward County No air monitoring
Nebraska Sheridan County No air monitoring
Nebraska Sherman County No air monitoring
Nebraska Sioux County No air monitoring
Nebraska Stanton County No air monitoring
Nebraska Thayer County No air monitoring
Nebraska Thomas County No air monitoring
Nebraska Thurston County No air monitoring
Nebraska Valley County No air monitoring
Nebraska Washington County No air monitoring
Nebraska Wayne County No air monitoring
Nebraska Webster County No air monitoring
Nebraska Wheeler County No air monitoring
Nebraska York County No air monitoring
Nevada Carson City 68ppb
Nevada Churchill County 67ppb
Nevada Clark County 74ppb
Nevada Douglas County No air monitoring
Nevada Elko County No air monitoring
Nevada Esmeralda County No air monitoring
Nevada Eureka County No air monitoring
Nevada Humboldt County No air monitoring
Nevada Lander County No air monitoring
Nevada Lincoln County No air monitoring
Nevada Lyon County No air monitoring
Nevada Mineral County No air monitoring
Nevada Nevada No air monitoring
Nevada Nye County No air monitoring
Nevada Pershing County No air monitoring
Nevada Storey County No air monitoring
Nevada Washoe County 69ppb
Nevada White Pine County 64ppb
New Hampshire Belknap County 58ppb
New Hampshire Carroll County No air monitoring
New Hampshire Cheshire County 59ppb
New Hampshire Coos County 57ppb
New Hampshire Grafton County 57ppb
New Hampshire Hillsborough County 63ppb
New Hampshire Merrimack County 59ppb
New Hampshire New Hampshire No air monitoring
New Hampshire Rockingham County 67ppb
New Hampshire Strafford County No air monitoring
New Hampshire Sullivan County No air monitoring
New Jersey Atlantic County 59ppb
New Jersey Bergen County 70ppb
New Jersey Burlington County No air monitoring
New Jersey Camden County 67ppb
New Jersey Cape May County No air monitoring
New Jersey Cumberland County 65ppb
New Jersey Essex County No air monitoring
New Jersey Gloucester County 70ppb
New Jersey Hudson County 67ppb
New Jersey Hunterdon County 67ppb
New Jersey Mercer County 69ppb
New Jersey Middlesex County 71ppb
New Jersey Monmouth County 70ppb
New Jersey Morris County 65ppb
New Jersey New Jersey No air monitoring
New Jersey Ocean County 70ppb
New Jersey Passaic County 63ppb
New Jersey Salem County No air monitoring
New Jersey Somerset County No air monitoring
New Jersey Sussex County No air monitoring
New Jersey Union County No air monitoring
New Jersey Warren County 58ppb
New Mexico Bernalillo County 72ppb
New Mexico Catron County No air monitoring
New Mexico Chaves County No air monitoring
New Mexico Cibola County No air monitoring
New Mexico Colfax County No air monitoring
New Mexico Curry County No air monitoring
New Mexico DeBaca County No air monitoring
New Mexico Dona Ana County 79ppb
New Mexico Eddy County 78ppb
New Mexico Grant County No air monitoring
New Mexico Guadalupe County No air monitoring
New Mexico Harding County No air monitoring
New Mexico Hidalgo County No air monitoring
New Mexico Lea County 71ppb
New Mexico Lincoln County No air monitoring
New Mexico Los Alamos County No air monitoring
New Mexico Luna County No air monitoring
New Mexico McKinley County No air monitoring
New Mexico Mora County No air monitoring
New Mexico New Mexico No air monitoring
New Mexico Otero County No air monitoring
New Mexico Quay County No air monitoring
New Mexico Rio Arriba County 63ppb
New Mexico Roosevelt County No air monitoring
New Mexico San Juan County 70ppb
New Mexico San Miguel County No air monitoring
New Mexico Sandoval County 67ppb
New Mexico Santa Fe County 65ppb
New Mexico Sierra County No air monitoring
New Mexico Socorro County No air monitoring
New Mexico Taos County No air monitoring
New Mexico Torrance County No air monitoring
New Mexico Union County No air monitoring
New Mexico Valencia County 63ppb
New York Albany County 62ppb
New York Allegany County No air monitoring
New York Bronx County 70ppb
New York Broome County No air monitoring
New York Cattaraugus County No air monitoring
New York Cayuga County No air monitoring
New York Chautauqua County 69ppb
New York Chemung County No air monitoring
New York Chenango County No air monitoring
New York Clinton County No air monitoring
New York Columbia County No air monitoring
New York Cortland County No air monitoring
New York Delaware County No air monitoring
New York Dutchess County 63ppb
New York Erie County 67ppb
New York Essex County 66ppb
New York Franklin County No air monitoring
New York Fulton County No air monitoring
New York Genesee County No air monitoring
New York Greene County No air monitoring
New York Hamilton County 60ppb
New York Herkimer County No air monitoring
New York Jefferson County 63ppb
New York Kings County No air monitoring
New York Lewis County No air monitoring
New York Livingston County No air monitoring
New York Madison County No air monitoring
New York Monroe County 67ppb
New York Montgomery County No air monitoring
New York Nassau County No air monitoring
New York New York No air monitoring
New York New York County 71ppb
New York Niagara County 66ppb
New York Oneida County No air monitoring
New York Onondaga County 64ppb
New York Ontario County No air monitoring
New York Orange County No air monitoring
New York Orleans County No air monitoring
New York Oswego County 61ppb
New York Otsego County No air monitoring
New York Putnam County 64ppb
New York Queens County 72ppb
New York Rensselaer County No air monitoring
New York Richmond County 69ppb
New York Rockland County 66ppb
New York Saratoga County 61ppb
New York Schenectady County No air monitoring
New York Schoharie County No air monitoring
New York Schuyler County No air monitoring
New York Seneca County No air monitoring
New York St. Lawrence County No air monitoring
New York Steuben County 61ppb
New York Suffolk County 75ppb
New York Sullivan County No air monitoring
New York Tioga County No air monitoring
New York Tompkins County 62ppb
New York Ulster County No air monitoring
New York Warren County No air monitoring
New York Washington County No air monitoring
New York Wayne County 63ppb
New York Westchester County 69ppb
New York Wyoming County No air monitoring
New York Yates County No air monitoring
North Carolina Alamance County No air monitoring
North Carolina Alexander County 61ppb
North Carolina Alleghany County No air monitoring
North Carolina Anson County No air monitoring
North Carolina Ashe County No air monitoring
North Carolina Avery County 60ppb
North Carolina Beaufort County No air monitoring
North Carolina Bertie County No air monitoring
North Carolina Bladen County No air monitoring
North Carolina Brunswick County No air monitoring
North Carolina Buncombe County 61ppb
North Carolina Burke County No air monitoring
North Carolina Cabarrus County No air monitoring
North Carolina Caldwell County 62ppb
North Carolina Camden County No air monitoring
North Carolina Carteret County 63ppb
North Carolina Caswell County 59ppb
North Carolina Catawba County No air monitoring
North Carolina Chatham County No air monitoring
North Carolina Cherokee County No air monitoring
North Carolina Chowan County No air monitoring
North Carolina Clay County No air monitoring
North Carolina Cleveland County No air monitoring
North Carolina Columbus County No air monitoring
North Carolina Craven County No air monitoring
North Carolina Cumberland County 67ppb
North Carolina Currituck County No air monitoring
North Carolina Dare County No air monitoring
North Carolina Davidson County No air monitoring
North Carolina Davie County No air monitoring
North Carolina Duplin County No air monitoring
North Carolina Durham County 62ppb
North Carolina Edgecombe County 62ppb
North Carolina Forsyth County 65ppb
North Carolina Franklin County No air monitoring
North Carolina Gaston County No air monitoring
North Carolina Gates County No air monitoring
North Carolina Graham County 66ppb
North Carolina Granville County 61ppb
North Carolina Greene County No air monitoring
North Carolina Guilford County 65ppb
North Carolina Halifax County No air monitoring
North Carolina Harnett County No air monitoring
North Carolina Haywood County 65ppb
North Carolina Henderson County No air monitoring
North Carolina Hertford County No air monitoring
North Carolina Hoke County No air monitoring
North Carolina Hyde County No air monitoring
North Carolina Iredell County No air monitoring
North Carolina Jackson County No air monitoring
North Carolina Johnston County 64ppb
North Carolina Jones County No air monitoring
North Carolina Lee County No air monitoring
North Carolina Lenoir County 64ppb
North Carolina Lincoln County 65ppb
North Carolina Macon County 58ppb
North Carolina Madison County No air monitoring
North Carolina Martin County 57ppb
North Carolina McDowell County No air monitoring
North Carolina Mecklenburg County 69ppb
North Carolina Mitchell County No air monitoring
North Carolina Montgomery County 62ppb
North Carolina Moore County No air monitoring
North Carolina Nash County No air monitoring
North Carolina New Hanover County 62ppb
North Carolina North Carolina No air monitoring
North Carolina Northampton County No air monitoring
North Carolina Onslow County No air monitoring
North Carolina Orange County No air monitoring
North Carolina Pamlico County No air monitoring
North Carolina Pasquotank County No air monitoring
North Carolina Pender County No air monitoring
North Carolina Perquimans County No air monitoring
North Carolina Person County 62ppb
North Carolina Pitt County 61ppb
North Carolina Polk County No air monitoring
North Carolina Randolph County No air monitoring
North Carolina Richmond County No air monitoring
North Carolina Robeson County No air monitoring
North Carolina Rockingham County 63ppb
North Carolina Rowan County 65ppb
North Carolina Rutherford County No air monitoring
North Carolina Sampson County No air monitoring
North Carolina Scotland County No air monitoring
North Carolina Stanly County No air monitoring
North Carolina Stokes County No air monitoring
North Carolina Surry County No air monitoring
North Carolina Swain County 61ppb
North Carolina Transylvania County No air monitoring
North Carolina Tyrrell County No air monitoring
North Carolina Union County 67ppb
North Carolina Vance County No air monitoring
North Carolina Wake County 63ppb
North Carolina Warren County No air monitoring
North Carolina Washington County No air monitoring
North Carolina Watauga County No air monitoring
North Carolina Wayne County No air monitoring
North Carolina Wilkes County No air monitoring
North Carolina Wilson County No air monitoring
North Carolina Yadkin County No air monitoring
North Carolina Yancey County 63ppb
North Dakota Adams County No air monitoring
North Dakota Barnes County No air monitoring
North Dakota Benson County No air monitoring
North Dakota Billings County 64ppb
North Dakota Bottineau County No air monitoring
North Dakota Bowman County No air monitoring
North Dakota Burke County 62ppb
North Dakota Burleigh County No air monitoring
North Dakota Cass County 62ppb
North Dakota Cavalier County No air monitoring
North Dakota Dickey County No air monitoring
North Dakota Divide County No air monitoring
North Dakota Dunn County 63ppb
North Dakota Eddy County No air monitoring
North Dakota Emmons County No air monitoring
North Dakota Foster County No air monitoring
North Dakota Golden Valley County No air monitoring
North Dakota Grand Forks County No air monitoring
North Dakota Grant County No air monitoring
North Dakota Griggs County No air monitoring
North Dakota Hettinger County No air monitoring
North Dakota Kidder County No air monitoring
North Dakota LaMoure County No air monitoring
North Dakota Logan County No air monitoring
North Dakota McHenry County No air monitoring
North Dakota McIntosh County No air monitoring
North Dakota McKenzie County 62ppb
North Dakota McLean County No air monitoring
North Dakota Mercer County 62ppb
North Dakota Morton County No air monitoring
North Dakota Mountrail County No air monitoring
North Dakota Nelson County No air monitoring
North Dakota North Dakota No air monitoring
North Dakota Oliver County 64ppb
North Dakota Pembina County No air monitoring
North Dakota Pierce County No air monitoring
North Dakota Ramsey County No air monitoring
North Dakota Ransom County No air monitoring
North Dakota Renville County No air monitoring
North Dakota Richland County No air monitoring
North Dakota Rolette County No air monitoring
North Dakota Sargent County No air monitoring
North Dakota Sheridan County No air monitoring
North Dakota Sioux County No air monitoring
North Dakota Slope County No air monitoring
North Dakota Stark County No air monitoring
North Dakota Steele County No air monitoring
North Dakota Stutsman County No air monitoring
North Dakota Towner County No air monitoring
North Dakota Traill County No air monitoring
North Dakota Walsh County No air monitoring
North Dakota Ward County 61ppb
North Dakota Wells County No air monitoring
North Dakota Williams County No air monitoring
Ohio Adams County No air monitoring
Ohio Allen County 67ppb
Ohio Ashland County No air monitoring
Ohio Ashtabula County 70ppb
Ohio Athens County No air monitoring
Ohio Auglaize County No air monitoring
Ohio Belmont County No air monitoring
Ohio Brown County No air monitoring
Ohio Butler County 68ppb
Ohio Carroll County No air monitoring
Ohio Champaign County No air monitoring
Ohio Clark County 66ppb
Ohio Clermont County 65ppb
Ohio Clinton County 66ppb
Ohio Columbiana County No air monitoring
Ohio Coshocton County No air monitoring
Ohio Crawford County No air monitoring
Ohio Cuyahoga County 71ppb
Ohio Darke County No air monitoring
Ohio Defiance County No air monitoring
Ohio Delaware County 62ppb
Ohio Erie County No air monitoring
Ohio Fairfield County No air monitoring
Ohio Fayette County No air monitoring
Ohio Franklin County 67ppb
Ohio Fulton County No air monitoring
Ohio Gallia County No air monitoring
Ohio Geauga County 65ppb
Ohio Greene County 67ppb
Ohio Guernsey County No air monitoring
Ohio Hamilton County 70ppb
Ohio Hancock County No air monitoring
Ohio Hardin County No air monitoring
Ohio Harrison County No air monitoring
Ohio Henry County No air monitoring
Ohio Highland County No air monitoring
Ohio Hocking County No air monitoring
Ohio Holmes County No air monitoring
Ohio Huron County No air monitoring
Ohio Jackson County No air monitoring
Ohio Jefferson County 64ppb
Ohio Knox County 65ppb
Ohio Lake County 73ppb
Ohio Lawrence County 60ppb
Ohio Licking County 61ppb
Ohio Logan County No air monitoring
Ohio Lorain County 62ppb
Ohio Lucas County 72ppb
Ohio Madison County 64ppb
Ohio Mahoning County 66ppb
Ohio Marion County No air monitoring
Ohio Medina County 68ppb
Ohio Meigs County No air monitoring
Ohio Mercer County No air monitoring
Ohio Miami County 66ppb
Ohio Monroe County No air monitoring
Ohio Montgomery County 68ppb
Ohio Morgan County No air monitoring
Ohio Morrow County No air monitoring
Ohio Muskingum County No air monitoring
Ohio Noble County 63ppb
Ohio Ohio No air monitoring
Ohio Ottawa County No air monitoring
Ohio Paulding County No air monitoring
Ohio Perry County No air monitoring
Ohio Pickaway County No air monitoring
Ohio Pike County No air monitoring
Ohio Portage County 69ppb
Ohio Preble County 66ppb
Ohio Putnam County No air monitoring
Ohio Richland County No air monitoring
Ohio Ross County No air monitoring
Ohio Sandusky County No air monitoring
Ohio Scioto County No air monitoring
Ohio Seneca County No air monitoring
Ohio Shelby County No air monitoring
Ohio Stark County 66ppb
Ohio Summit County 68ppb
Ohio Trumbull County 67ppb
Ohio Tuscarawas County No air monitoring
Ohio Union County No air monitoring
Ohio Van Wert County No air monitoring
Ohio Vinton County No air monitoring
Ohio Warren County 70ppb
Ohio Washington County 61ppb
Ohio Wayne County No air monitoring
Ohio Williams County No air monitoring
Ohio Wood County 67ppb
Ohio Wyandot County No air monitoring
Oklahoma Adair County 64ppb
Oklahoma Alfalfa County No air monitoring
Oklahoma Atoka County No air monitoring
Oklahoma Beaver County No air monitoring
Oklahoma Beckham County No air monitoring
Oklahoma Blaine County No air monitoring
Oklahoma Bryan County No air monitoring
Oklahoma Caddo County No air monitoring
Oklahoma Canadian County 70ppb
Oklahoma Carter County No air monitoring
Oklahoma Cherokee County No air monitoring
Oklahoma Choctaw County No air monitoring
Oklahoma Cimarron County No air monitoring
Oklahoma Cleveland County 69ppb
Oklahoma Coal County No air monitoring
Oklahoma Comanche County 68ppb
Oklahoma Cotton County No air monitoring
Oklahoma Craig County No air monitoring
Oklahoma Creek County 67ppb
Oklahoma Custer County No air monitoring
Oklahoma Delaware County No air monitoring
Oklahoma Dewey County 66ppb
Oklahoma Ellis County No air monitoring
Oklahoma Garfield County No air monitoring
Oklahoma Garvin County No air monitoring
Oklahoma Grady County No air monitoring
Oklahoma Grant County No air monitoring
Oklahoma Greer County No air monitoring
Oklahoma Harmon County No air monitoring
Oklahoma Harper County No air monitoring
Oklahoma Haskell County No air monitoring
Oklahoma Hughes County No air monitoring
Oklahoma Jackson County No air monitoring
Oklahoma Jefferson County No air monitoring
Oklahoma Johnston County No air monitoring
Oklahoma Kay County No air monitoring
Oklahoma Kingfisher County No air monitoring
Oklahoma Kiowa County No air monitoring
Oklahoma Latimer County No air monitoring
Oklahoma Le Flore County No air monitoring
Oklahoma Lincoln County No air monitoring
Oklahoma Logan County No air monitoring
Oklahoma Love County No air monitoring
Oklahoma Major County No air monitoring
Oklahoma Marshall County No air monitoring
Oklahoma Mayes County 65ppb
Oklahoma McClain County 71ppb
Oklahoma McCurtain County No air monitoring
Oklahoma McIntosh County No air monitoring
Oklahoma Murray County No air monitoring
Oklahoma Muskogee County No air monitoring
Oklahoma Noble County No air monitoring
Oklahoma Nowata County No air monitoring
Oklahoma Okfuskee County No air monitoring
Oklahoma Oklahoma No air monitoring
Oklahoma Oklahoma County 71ppb
Oklahoma Okmulgee County No air monitoring
Oklahoma Osage County 71ppb
Oklahoma Ottawa County 70ppb
Oklahoma Pawnee County No air monitoring
Oklahoma Payne County No air monitoring
Oklahoma Pittsburg County 67ppb
Oklahoma Pontotoc County No air monitoring
Oklahoma Pottawatomie County No air monitoring
Oklahoma Pushmataha County No air monitoring
Oklahoma Roger Mills County No air monitoring
Oklahoma Rogers County No air monitoring
Oklahoma Seminole County No air monitoring
Oklahoma Sequoyah County 61ppb
Oklahoma Stephens County No air monitoring
Oklahoma Texas County No air monitoring
Oklahoma Tillman County No air monitoring
Oklahoma Tulsa County 73ppb
Oklahoma Wagoner County No air monitoring
Oklahoma Washington County No air monitoring
Oklahoma Washita County No air monitoring
Oklahoma Woods County No air monitoring
Oklahoma Woodward County No air monitoring
Oregon Baker County No air monitoring
Oregon Benton County No air monitoring
Oregon Clackamas County 65ppb
Oregon Clatsop County No air monitoring
Oregon Columbia County 54ppb
Oregon Coos County No air monitoring
Oregon Crook County No air monitoring
Oregon Curry County No air monitoring
Oregon Deschutes County No air monitoring
Oregon Douglas County No air monitoring
Oregon Gilliam County No air monitoring
Oregon Grant County No air monitoring
Oregon Harney County No air monitoring
Oregon Hood River County No air monitoring
Oregon Jackson County 65ppb
Oregon Jefferson County No air monitoring
Oregon Josephine County No air monitoring
Oregon Klamath County No air monitoring
Oregon Lake County No air monitoring
Oregon Lane County 60ppb
Oregon Lincoln County No air monitoring
Oregon Linn County No air monitoring
Oregon Malheur County No air monitoring
Oregon Marion County 65ppb
Oregon Morrow County No air monitoring
Oregon Multnomah County 57ppb
Oregon Oregon No air monitoring
Oregon Polk County No air monitoring
Oregon Sherman County No air monitoring
Oregon Tillamook County No air monitoring
Oregon Umatilla County 63ppb
Oregon Union County No air monitoring
Oregon Wallowa County No air monitoring
Oregon Wasco County No air monitoring
Oregon Washington County 57ppb
Oregon Wheeler County No air monitoring
Oregon Yamhill County No air monitoring
Pennsylvania Adams County 65ppb
Pennsylvania Allegheny County 67ppb
Pennsylvania Armstrong County 66ppb
Pennsylvania Beaver County 65ppb
Pennsylvania Bedford County No air monitoring
Pennsylvania Berks County 65ppb
Pennsylvania Blair County No air monitoring
Pennsylvania Bradford County 62ppb
Pennsylvania Bucks County 73ppb
Pennsylvania Butler County No air monitoring
Pennsylvania Cambria County 64ppb
Pennsylvania Cameron County No air monitoring
Pennsylvania Carbon County No air monitoring
Pennsylvania Centre County 64ppb
Pennsylvania Chester County No air monitoring
Pennsylvania Clarion County No air monitoring
Pennsylvania Clearfield County No air monitoring
Pennsylvania Clinton County No air monitoring
Pennsylvania Columbia County No air monitoring
Pennsylvania Crawford County No air monitoring
Pennsylvania Cumberland County No air monitoring
Pennsylvania Dauphin County 64ppb
Pennsylvania Delaware County No air monitoring
Pennsylvania Elk County 63ppb
Pennsylvania Erie County 61ppb
Pennsylvania Fayette County 61ppb
Pennsylvania Forest County No air monitoring
Pennsylvania Franklin County 61ppb
Pennsylvania Fulton County No air monitoring
Pennsylvania Greene County No air monitoring
Pennsylvania Huntingdon County No air monitoring
Pennsylvania Indiana County No air monitoring
Pennsylvania Jefferson County No air monitoring
Pennsylvania Juniata County No air monitoring
Pennsylvania Lackawanna County 63ppb
Pennsylvania Lancaster County 64ppb
Pennsylvania Lawrence County 61ppb
Pennsylvania Lebanon County 64ppb
Pennsylvania Lehigh County 62ppb
Pennsylvania Luzerne County No air monitoring
Pennsylvania Lycoming County 61ppb
Pennsylvania Mc Kean County No air monitoring
Pennsylvania Mercer County 66ppb
Pennsylvania Mifflin County No air monitoring
Pennsylvania Monroe County No air monitoring
Pennsylvania Montgomery County No air monitoring
Pennsylvania Montour County No air monitoring
Pennsylvania Northampton County 67ppb
Pennsylvania Northumberland County No air monitoring
Pennsylvania Pennsylvania No air monitoring
Pennsylvania Perry County No air monitoring
Pennsylvania Philadelphia County 70ppb
Pennsylvania Pike County No air monitoring
Pennsylvania Potter County No air monitoring
Pennsylvania Schuylkill County No air monitoring
Pennsylvania Snyder County No air monitoring
Pennsylvania Somerset County 62ppb
Pennsylvania Sullivan County No air monitoring
Pennsylvania Susquehanna County No air monitoring
Pennsylvania Tioga County 62ppb
Pennsylvania Union County No air monitoring
Pennsylvania Venango County No air monitoring
Pennsylvania Warren County No air monitoring
Pennsylvania Washington County 64ppb
Pennsylvania Wayne County No air monitoring
Pennsylvania Westmoreland County 53ppb
Pennsylvania Wyoming County No air monitoring
Pennsylvania York County No air monitoring
Puerto Rico Adjuntas Municipality No air monitoring
Puerto Rico Aguada Municipality No air monitoring
Puerto Rico Aguadilla Municipality No air monitoring
Puerto Rico Aguas Buenas Municipality No air monitoring
Puerto Rico Aibonito Municipality No air monitoring
Puerto Rico Añasco Municipality No air monitoring
Puerto Rico Arecibo Municipality No air monitoring
Puerto Rico Arroyo Municipality No air monitoring
Puerto Rico Barceloneta Municipality No air monitoring
Puerto Rico Barranquitas Municipality No air monitoring
Puerto Rico Bayamón Municipality No air monitoring
Puerto Rico Cabo Rojo Municipality No air monitoring
Puerto Rico Caguas Municipality No air monitoring
Puerto Rico Camuy Municipality No air monitoring
Puerto Rico Canóvanas Municipality No air monitoring
Puerto Rico Carolina Municipality No air monitoring
Puerto Rico Cataño Municipality No air monitoring
Puerto Rico Cayey Municipality No air monitoring
Puerto Rico Ceiba Municipality No air monitoring
Puerto Rico Ciales Municipality No air monitoring
Puerto Rico Cidra Municipality No air monitoring
Puerto Rico Coamo Municipality No air monitoring
Puerto Rico Comerío Municipality No air monitoring
Puerto Rico Corozal Municipality No air monitoring
Puerto Rico Culebra Municipality No air monitoring
Puerto Rico Dorado Municipality No air monitoring
Puerto Rico Fajardo Municipality No air monitoring
Puerto Rico Florida Municipality No air monitoring
Puerto Rico Guánica Municipality No air monitoring
Puerto Rico Guayama Municipality No air monitoring
Puerto Rico Guayanilla Municipality No air monitoring
Puerto Rico Guaynabo Municipality No air monitoring
Puerto Rico Gurabo Municipality No air monitoring
Puerto Rico Hatillo Municipality No air monitoring
Puerto Rico Hormigueros Municipality No air monitoring
Puerto Rico Humacao Municipality No air monitoring
Puerto Rico Isabela Municipality No air monitoring
Puerto Rico Jayuya Municipality No air monitoring
Puerto Rico Juana Díaz Municipality No air monitoring
Puerto Rico Juncos Municipality No air monitoring
Puerto Rico Lajas Municipality No air monitoring
Puerto Rico Lares Municipality No air monitoring
Puerto Rico Las Marías Municipality No air monitoring
Puerto Rico Las Piedras Municipality No air monitoring
Puerto Rico Loíza Municipality No air monitoring
Puerto Rico Luquillo Municipality No air monitoring
Puerto Rico Manatí Municipality No air monitoring
Puerto Rico Maricao Municipality No air monitoring
Puerto Rico Maunabo Municipality No air monitoring
Puerto Rico Mayagüez Municipality No air monitoring
Puerto Rico Moca Municipality No air monitoring
Puerto Rico Morovis Municipality No air monitoring
Puerto Rico Naguabo Municipality No air monitoring
Puerto Rico Naranjito Municipality No air monitoring
Puerto Rico Orocovis Municipality No air monitoring
Puerto Rico Patillas Municipality No air monitoring
Puerto Rico Peñuelas Municipality No air monitoring
Puerto Rico Ponce Municipality No air monitoring
Puerto Rico Quebradillas Municipality No air monitoring
Puerto Rico Rincón Municipality No air monitoring
Puerto Rico Río Grande Municipality No air monitoring
Puerto Rico Sabana Grande Municipality No air monitoring
Puerto Rico Salinas Municipality No air monitoring
Puerto Rico San Germán Municipality No air monitoring
Puerto Rico San Juan Municipality No air monitoring
Puerto Rico San Lorenzo Municipality No air monitoring
Puerto Rico San Sebastián Municipality No air monitoring
Puerto Rico Santa Isabel Municipality No air monitoring
Puerto Rico Toa Alta Municipality No air monitoring
Puerto Rico Toa Baja Municipality No air monitoring
Puerto Rico Trujillo Alto Municipality No air monitoring
Puerto Rico Utuado Municipality No air monitoring
Puerto Rico Vega Alta Municipality No air monitoring
Puerto Rico Vega Baja Municipality No air monitoring
Puerto Rico Vieques Municipality No air monitoring
Puerto Rico Villalba Municipality No air monitoring
Puerto Rico Yabucoa Municipality No air monitoring
Puerto Rico Yauco Municipality No air monitoring
Rhode Island Bristol County No air monitoring
Rhode Island Kent County 64ppb
Rhode Island Newport County No air monitoring
Rhode Island Providence County 66ppb
Rhode Island Rhode Island No air monitoring
Rhode Island Washington County 68ppb
South Carolina Abbeville County No air monitoring
South Carolina Aiken County 62ppb
South Carolina Allendale County No air monitoring
South Carolina Anderson County 62ppb
South Carolina Bamberg County No air monitoring
South Carolina Barnwell County No air monitoring
South Carolina Beaufort County No air monitoring
South Carolina Berkeley County 60ppb
South Carolina Calhoun County No air monitoring
South Carolina Charleston County 58ppb
South Carolina Cherokee County No air monitoring
South Carolina Chester County No air monitoring
South Carolina Chesterfield County 60ppb
South Carolina Clarendon County No air monitoring
South Carolina Colleton County No air monitoring
South Carolina Darlington County 62ppb
South Carolina Dillon County No air monitoring
South Carolina Dorchester County No air monitoring
South Carolina Edgefield County 59ppb
South Carolina Fairfield County No air monitoring
South Carolina Florence County No air monitoring
South Carolina Georgetown County No air monitoring
South Carolina Greenville County 66ppb
South Carolina Greenwood County No air monitoring
South Carolina Hampton County No air monitoring
South Carolina Horry County 63ppb
South Carolina Jasper County No air monitoring
South Carolina Kershaw County No air monitoring
South Carolina Lancaster County No air monitoring
South Carolina Laurens County No air monitoring
South Carolina Lee County No air monitoring
South Carolina Lexington County No air monitoring
South Carolina Marion County No air monitoring
South Carolina Marlboro County No air monitoring
South Carolina McCormick County No air monitoring
South Carolina Newberry County No air monitoring
South Carolina Oconee County No air monitoring
South Carolina Orangeburg County No air monitoring
South Carolina Pickens County No air monitoring
South Carolina Richland County 65ppb
South Carolina Saluda County No air monitoring
South Carolina South Carolina No air monitoring
South Carolina Spartanburg County 65ppb
South Carolina Sumter County No air monitoring
South Carolina Union County No air monitoring
South Carolina Williamsburg County No air monitoring
South Carolina York County 64ppb
South Dakota Aurora County No air monitoring
South Dakota Beadle County No air monitoring
South Dakota Bennett County No air monitoring
South Dakota Bon Homme County No air monitoring
South Dakota Brookings County 67ppb
South Dakota Brown County No air monitoring
South Dakota Brule County No air monitoring
South Dakota Buffalo County No air monitoring
South Dakota Butte County No air monitoring
South Dakota Campbell County No air monitoring
South Dakota Charles Mix County No air monitoring
South Dakota Clark County No air monitoring
South Dakota Clay County No air monitoring
South Dakota Codington County 68ppb
South Dakota Corson County No air monitoring
South Dakota Custer County 64ppb
South Dakota Davison County No air monitoring
South Dakota Day County No air monitoring
South Dakota Deuel County No air monitoring
South Dakota Dewey County No air monitoring
South Dakota Douglas County No air monitoring
South Dakota Edmunds County No air monitoring
South Dakota Fall River County No air monitoring
South Dakota Faulk County No air monitoring
South Dakota Grant County No air monitoring
South Dakota Gregory County No air monitoring
South Dakota Haakon County No air monitoring
South Dakota Hamlin County No air monitoring
South Dakota Hand County No air monitoring
South Dakota Hanson County No air monitoring
South Dakota Harding County No air monitoring
South Dakota Hughes County No air monitoring
South Dakota Hutchinson County No air monitoring
South Dakota Hyde County No air monitoring
South Dakota Jackson County 62ppb
South Dakota Jerauld County No air monitoring
South Dakota Jones County No air monitoring
South Dakota Kingsbury County No air monitoring
South Dakota Lake County No air monitoring
South Dakota Lawrence County No air monitoring
South Dakota Lincoln County No air monitoring
South Dakota Lyman County No air monitoring
South Dakota Marshall County No air monitoring
South Dakota McCook County No air monitoring
South Dakota McPherson County No air monitoring
South Dakota Meade County 66ppb
South Dakota Mellette County No air monitoring
South Dakota Miner County No air monitoring
South Dakota Minnehaha County No air monitoring
South Dakota Moody County No air monitoring
South Dakota Oglala Lakota County No air monitoring
South Dakota Pennington County No air monitoring
South Dakota Perkins County No air monitoring
South Dakota Potter County No air monitoring
South Dakota Roberts County No air monitoring
South Dakota Sanborn County No air monitoring
South Dakota Shannon County No air monitoring
South Dakota South Dakota No air monitoring
South Dakota Spink County No air monitoring
South Dakota Stanley County No air monitoring
South Dakota Sully County No air monitoring
South Dakota Todd County No air monitoring
South Dakota Tripp County No air monitoring
South Dakota Turner County No air monitoring
South Dakota Union County No air monitoring
South Dakota Walworth County No air monitoring
South Dakota Yankton County No air monitoring
South Dakota Ziebach County No air monitoring
Tennessee Anderson County 60ppb
Tennessee Bedford County No air monitoring
Tennessee Benton County No air monitoring
Tennessee Bledsoe County No air monitoring
Tennessee Blount County 67ppb
Tennessee Bradley County No air monitoring
Tennessee Campbell County No air monitoring
Tennessee Cannon County No air monitoring
Tennessee Carroll County No air monitoring
Tennessee Carter County No air monitoring
Tennessee Cheatham County No air monitoring
Tennessee Chester County No air monitoring
Tennessee Claiborne County 60ppb
Tennessee Clay County No air monitoring
Tennessee Cocke County No air monitoring
Tennessee Coffee County No air monitoring
Tennessee Crockett County No air monitoring
Tennessee Cumberland County No air monitoring
Tennessee Davidson County 66ppb
Tennessee Decatur County No air monitoring
Tennessee DeKalb County 60ppb
Tennessee Dickson County No air monitoring
Tennessee Dyer County No air monitoring
Tennessee Fayette County No air monitoring
Tennessee Fentress County No air monitoring
Tennessee Franklin County No air monitoring
Tennessee Gibson County No air monitoring
Tennessee Giles County No air monitoring
Tennessee Grainger County No air monitoring
Tennessee Greene County No air monitoring
Tennessee Grundy County No air monitoring
Tennessee Hamblen County No air monitoring
Tennessee Hamilton County 65ppb
Tennessee Hancock County No air monitoring
Tennessee Hardeman County No air monitoring
Tennessee Hardin County No air monitoring
Tennessee Hawkins County No air monitoring
Tennessee Haywood County No air monitoring
Tennessee Henderson County No air monitoring
Tennessee Henry County No air monitoring
Tennessee Hickman County No air monitoring
Tennessee Houston County No air monitoring
Tennessee Humphreys County No air monitoring
Tennessee Jackson County No air monitoring
Tennessee Jefferson County 64ppb
Tennessee Johnson County No air monitoring
Tennessee Knox County 61ppb
Tennessee Lake County No air monitoring
Tennessee Lauderdale County No air monitoring
Tennessee Lawrence County No air monitoring
Tennessee Lewis County No air monitoring
Tennessee Lincoln County No air monitoring
Tennessee Loudon County 63ppb
Tennessee Macon County No air monitoring
Tennessee Madison County No air monitoring
Tennessee Marion County No air monitoring
Tennessee Marshall County No air monitoring
Tennessee Maury County No air monitoring
Tennessee McMinn County No air monitoring
Tennessee McNairy County No air monitoring
Tennessee Meigs County No air monitoring
Tennessee Monroe County No air monitoring
Tennessee Montgomery County No air monitoring
Tennessee Moore County No air monitoring
Tennessee Morgan County No air monitoring
Tennessee Obion County No air monitoring
Tennessee Overton County No air monitoring
Tennessee Perry County No air monitoring
Tennessee Pickett County No air monitoring
Tennessee Polk County No air monitoring
Tennessee Putnam County No air monitoring
Tennessee Rhea County No air monitoring
Tennessee Roane County No air monitoring
Tennessee Robertson County No air monitoring
Tennessee Rutherford County No air monitoring
Tennessee Scott County No air monitoring
Tennessee Sequatchie County No air monitoring
Tennessee Sevier County 63ppb
Tennessee Shelby County 72ppb
Tennessee Smith County No air monitoring
Tennessee Stewart County No air monitoring
Tennessee Sullivan County 64ppb
Tennessee Sumner County 68ppb
Tennessee Tennessee No air monitoring
Tennessee Tipton County No air monitoring
Tennessee Trousdale County No air monitoring
Tennessee Unicoi County No air monitoring
Tennessee Union County No air monitoring
Tennessee Van Buren County No air monitoring
Tennessee Warren County No air monitoring
Tennessee Washington County No air monitoring
Tennessee Wayne County No air monitoring
Tennessee Weakley County No air monitoring
Tennessee White County No air monitoring
Tennessee Williamson County 64ppb
Tennessee Wilson County 65ppb
Texas Anderson County No air monitoring
Texas Andrews County No air monitoring
Texas Angelina County No air monitoring
Texas Aransas County No air monitoring
Texas Archer County No air monitoring
Texas Armstrong County No air monitoring
Texas Atascosa County No air monitoring
Texas Austin County No air monitoring
Texas Bailey County No air monitoring
Texas Bandera County No air monitoring
Texas Bastrop County No air monitoring
Texas Baylor County No air monitoring
Texas Bee County No air monitoring
Texas Bell County 71ppb
Texas Bexar County 76ppb
Texas Blanco County No air monitoring
Texas Borden County No air monitoring
Texas Bosque County No air monitoring
Texas Bowie County No air monitoring
Texas Brazoria County 77ppb
Texas Brazos County No air monitoring
Texas Brewster County 63ppb
Texas Briscoe County No air monitoring
Texas Brooks County No air monitoring
Texas Brown County No air monitoring
Texas Burleson County No air monitoring
Texas Burnet County No air monitoring
Texas Caldwell County No air monitoring
Texas Calhoun County No air monitoring
Texas Callahan County No air monitoring
Texas Cameron County 57ppb
Texas Camp County No air monitoring
Texas Carson County No air monitoring
Texas Cass County No air monitoring
Texas Castro County No air monitoring
Texas Chambers County No air monitoring
Texas Cherokee County No air monitoring
Texas Childress County No air monitoring
Texas Clay County No air monitoring
Texas Cochran County No air monitoring
Texas Coke County No air monitoring
Texas Coleman County No air monitoring
Texas Collin County 78ppb
Texas Collingsworth County No air monitoring
Texas Colorado County No air monitoring
Texas Comal County No air monitoring
Texas Comanche County No air monitoring
Texas Concho County No air monitoring
Texas Cooke County No air monitoring
Texas Coryell County No air monitoring
Texas Cottle County No air monitoring
Texas Crane County No air monitoring
Texas Crockett County No air monitoring
Texas Crosby County No air monitoring
Texas Culberson County No air monitoring
Texas Dallam County No air monitoring
Texas Dallas County 75ppb
Texas Dawson County No air monitoring
Texas Deaf Smith County No air monitoring
Texas Delta County No air monitoring
Texas Denton County 81ppb
Texas DeWitt County No air monitoring
Texas Dickens County No air monitoring
Texas Dimmit County No air monitoring
Texas Donley County No air monitoring
Texas Duval County No air monitoring
Texas Eastland County No air monitoring
Texas Ector County No air monitoring
Texas Edwards County No air monitoring
Texas El Paso County 74ppb
Texas Ellis County 66ppb
Texas Erath County No air monitoring
Texas Falls County No air monitoring
Texas Fannin County No air monitoring
Texas Fayette County No air monitoring
Texas Fisher County No air monitoring
Texas Floyd County No air monitoring
Texas Foard County No air monitoring
Texas Fort Bend County No air monitoring
Texas Franklin County No air monitoring
Texas Freestone County No air monitoring
Texas Frio County No air monitoring
Texas Gaines County No air monitoring
Texas Galveston County 74ppb
Texas Garza County No air monitoring
Texas Gillespie County No air monitoring
Texas Glasscock County No air monitoring
Texas Goliad County No air monitoring
Texas Gonzales County No air monitoring
Texas Gray County No air monitoring
Texas Grayson County No air monitoring
Texas Gregg County 65ppb
Texas Grimes County No air monitoring
Texas Guadalupe County No air monitoring
Texas Hale County No air monitoring
Texas Hall County No air monitoring
Texas Hamilton County No air monitoring
Texas Hansford County No air monitoring
Texas Hardeman County No air monitoring
Texas Hardin County No air monitoring
Texas Harris County 83ppb
Texas Harrison County 63ppb
Texas Hartley County No air monitoring
Texas Haskell County No air monitoring
Texas Hays County No air monitoring
Texas Hemphill County No air monitoring
Texas Henderson County No air monitoring
Texas Hidalgo County No air monitoring
Texas Hill County No air monitoring
Texas Hockley County No air monitoring
Texas Hood County 75ppb
Texas Hopkins County No air monitoring
Texas Houston County No air monitoring
Texas Howard County No air monitoring
Texas Hudspeth County No air monitoring
Texas Hunt County 66ppb
Texas Hutchinson County No air monitoring
Texas Irion County No air monitoring
Texas Jack County No air monitoring
Texas Jackson County No air monitoring
Texas Jasper County No air monitoring
Texas Jeff Davis County No air monitoring
Texas Jefferson County 65ppb
Texas Jim Hogg County No air monitoring
Texas Jim Wells County No air monitoring
Texas Johnson County 77ppb
Texas Jones County No air monitoring
Texas Karnes County No air monitoring
Texas Kaufman County 67ppb
Texas Kendall County No air monitoring
Texas Kenedy County No air monitoring
Texas Kent County No air monitoring
Texas Kerr County No air monitoring
Texas Kimble County No air monitoring
Texas King County No air monitoring
Texas Kinney County No air monitoring
Texas Kleberg County No air monitoring
Texas Knox County No air monitoring
Texas La Salle County No air monitoring
Texas Lamar County No air monitoring
Texas Lamb County No air monitoring
Texas Lampasas County No air monitoring
Texas Lavaca County No air monitoring
Texas Lee County No air monitoring
Texas Leon County No air monitoring
Texas Liberty County No air monitoring
Texas Limestone County No air monitoring
Texas Lipscomb County No air monitoring
Texas Live Oak County No air monitoring
Texas Llano County No air monitoring
Texas Loving County No air monitoring
Texas Lubbock County No air monitoring
Texas Lynn County No air monitoring
Texas Madison County No air monitoring
Texas Marion County No air monitoring
Texas Martin County No air monitoring
Texas Mason County No air monitoring
Texas Matagorda County No air monitoring
Texas Maverick County No air monitoring
Texas McCulloch County No air monitoring
Texas McLennan County 68ppb
Texas McMullen County No air monitoring
Texas Medina County No air monitoring
Texas Menard County No air monitoring
Texas Midland County No air monitoring
Texas Milam County No air monitoring
Texas Mills County No air monitoring
Texas Mitchell County No air monitoring
Texas Montague County No air monitoring
Texas Montgomery County 71ppb
Texas Moore County No air monitoring
Texas Morris County No air monitoring
Texas Motley County No air monitoring
Texas Nacogdoches County No air monitoring
Texas Navarro County 65ppb
Texas Newton County No air monitoring
Texas Nolan County No air monitoring
Texas Nueces County 63ppb
Texas Ochiltree County No air monitoring
Texas Oldham County No air monitoring
Texas Orange County 63ppb
Texas Palo Pinto County No air monitoring
Texas Panola County No air monitoring
Texas Parker County 73ppb
Texas Parmer County No air monitoring
Texas Pecos County No air monitoring
Texas Polk County 59ppb
Texas Potter County No air monitoring
Texas Presidio County No air monitoring
Texas Rains County No air monitoring
Texas Randall County 69ppb
Texas Reagan County No air monitoring
Texas Real County No air monitoring
Texas Red River County No air monitoring
Texas Reeves County No air monitoring
Texas Refugio County No air monitoring
Texas Roberts County No air monitoring
Texas Robertson County No air monitoring
Texas Rockwall County 64ppb
Texas Runnels County No air monitoring
Texas Rusk County No air monitoring
Texas Sabine County No air monitoring
Texas San Augustine County No air monitoring
Texas San Jacinto County No air monitoring
Texas San Patricio County No air monitoring
Texas San Saba County No air monitoring
Texas Schleicher County No air monitoring
Texas Scurry County No air monitoring
Texas Shackelford County No air monitoring
Texas Shelby County No air monitoring
Texas Sherman County No air monitoring
Texas Smith County 69ppb
Texas Somervell County No air monitoring
Texas Starr County No air monitoring
Texas Stephens County No air monitoring
Texas Sterling County No air monitoring
Texas Stonewall County No air monitoring
Texas Sutton County No air monitoring
Texas Swisher County No air monitoring
Texas Tarrant County 80ppb
Texas Taylor County No air monitoring
Texas Terrell County No air monitoring
Texas Terry County No air monitoring
Texas Texas No air monitoring
Texas Throckmorton County No air monitoring
Texas Titus County No air monitoring
Texas Tom Green County No air monitoring
Texas Travis County 71ppb
Texas Trinity County No air monitoring
Texas Tyler County No air monitoring
Texas Upshur County No air monitoring
Texas Upton County No air monitoring
Texas Uvalde County No air monitoring
Texas Val Verde County No air monitoring
Texas Van Zandt County No air monitoring
Texas Victoria County 60ppb
Texas Walker County No air monitoring
Texas Waller County No air monitoring
Texas Ward County No air monitoring
Texas Washington County No air monitoring
Texas Webb County No air monitoring
Texas Wharton County No air monitoring
Texas Wheeler County No air monitoring
Texas Wichita County No air monitoring
Texas Wilbarger County No air monitoring
Texas Willacy County No air monitoring
Texas Williamson County No air monitoring
Texas Wilson County No air monitoring
Texas Winkler County No air monitoring
Texas Wise County No air monitoring
Texas Wood County No air monitoring
Texas Yoakum County No air monitoring
Texas Young County No air monitoring
Texas Zapata County No air monitoring
Texas Zavala County No air monitoring
Utah Beaver County No air monitoring
Utah Box Elder County No air monitoring
Utah Cache County 66ppb
Utah Carbon County 63ppb
Utah Daggett County No air monitoring
Utah Davis County 76ppb
Utah Duchesne County 77ppb
Utah Emery County No air monitoring
Utah Garfield County No air monitoring
Utah Grand County No air monitoring
Utah Iron County 62ppb
Utah Juab County No air monitoring
Utah Kane County No air monitoring
Utah Millard County No air monitoring
Utah Morgan County No air monitoring
Utah Piute County No air monitoring
Utah Rich County No air monitoring
Utah Salt Lake County 77ppb
Utah San Juan County 65ppb
Utah Sanpete County No air monitoring
Utah Sevier County No air monitoring
Utah Summit County No air monitoring
Utah Tooele County 71ppb
Utah Uintah County 76ppb
Utah Utah No air monitoring
Utah Utah County 72ppb
Utah Wasatch County No air monitoring
Utah Washington County 65ppb
Utah Wayne County No air monitoring
Utah Weber County 72ppb
Vermont Addison County No air monitoring
Vermont Bennington County 61ppb
Vermont Caledonia County No air monitoring
Vermont Chittenden County 60ppb
Vermont Essex County No air monitoring
Vermont Franklin County No air monitoring
Vermont Grand Isle County No air monitoring
Vermont Lamoille County No air monitoring
Vermont Orange County No air monitoring
Vermont Orleans County No air monitoring
Vermont Rutland County 57ppb
Vermont Vermont No air monitoring
Vermont Washington County No air monitoring
Vermont Windham County No air monitoring
Vermont Windsor County No air monitoring
Virginia Accomack County No air monitoring
Virginia Albemarle County 60ppb
Virginia Alexandria city No air monitoring
Virginia Alleghany County No air monitoring
Virginia Amelia County No air monitoring
Virginia Amherst County No air monitoring
Virginia Appomattox County No air monitoring
Virginia Arlington County 67ppb
Virginia Augusta County No air monitoring
Virginia Bath County No air monitoring
Virginia Bedford city No air monitoring
Virginia Bedford County No air monitoring
Virginia Bland County No air monitoring
Virginia Botetourt County No air monitoring
Virginia Bristol city No air monitoring
Virginia Brunswick County No air monitoring
Virginia Buchanan County No air monitoring
Virginia Buckingham County No air monitoring
Virginia Buena Vista city No air monitoring
Virginia Campbell County No air monitoring
Virginia Caroline County 62ppb
Virginia Carroll County No air monitoring
Virginia Charles City County 59ppb
Virginia Charlotte County No air monitoring
Virginia Charlottesville city No air monitoring
Virginia Chesapeake city No air monitoring
Virginia Chesterfield County 60ppb
Virginia Clarke County No air monitoring
Virginia Clifton Forge city No air monitoring
Virginia Colonial Heights city No air monitoring
Virginia Covington city No air monitoring
Virginia Craig County No air monitoring
Virginia Culpeper County No air monitoring
Virginia Cumberland County No air monitoring
Virginia Danville city No air monitoring
Virginia Dickenson County No air monitoring
Virginia Dinwiddie County No air monitoring
Virginia Emporia city No air monitoring
Virginia Essex County No air monitoring
Virginia Fairfax city No air monitoring
Virginia Fairfax County 67ppb
Virginia Falls Church city No air monitoring
Virginia Fauquier County 60ppb
Virginia Floyd County No air monitoring
Virginia Fluvanna County No air monitoring
Virginia Franklin city No air monitoring
Virginia Franklin County No air monitoring
Virginia Frederick County 60ppb
Virginia Fredericksburg city No air monitoring
Virginia Galax city No air monitoring
Virginia Giles County 63ppb
Virginia Gloucester County No air monitoring
Virginia Goochland County No air monitoring
Virginia Grayson County No air monitoring
Virginia Greene County No air monitoring
Virginia Greensville County No air monitoring
Virginia Halifax County No air monitoring
Virginia Hampton city 62ppb
Virginia Hanover County 61ppb
Virginia Harrisonburg city No air monitoring
Virginia Henrico County 63ppb
Virginia Henry County No air monitoring
Virginia Highland County No air monitoring
Virginia Hopewell city No air monitoring
Virginia Isle of Wight County No air monitoring
Virginia James City County No air monitoring
Virginia King and Queen County No air monitoring
Virginia King George County No air monitoring
Virginia King William County No air monitoring
Virginia Lancaster County No air monitoring
Virginia Lee County No air monitoring
Virginia Lexington city No air monitoring
Virginia Loudoun County 64ppb
Virginia Louisa County No air monitoring
Virginia Lunenburg County No air monitoring
Virginia Lynchburg city No air monitoring
Virginia Madison County 63ppb
Virginia Manassas city No air monitoring
Virginia Manassas Park city No air monitoring
Virginia Martinsville city No air monitoring
Virginia Mathews County No air monitoring
Virginia Mecklenburg County No air monitoring
Virginia Middlesex County No air monitoring
Virginia Montgomery County No air monitoring
Virginia Nelson County No air monitoring
Virginia New Kent County No air monitoring
Virginia Newport News city No air monitoring
Virginia Norfolk city No air monitoring
Virginia Northampton County No air monitoring
Virginia Northumberland County No air monitoring
Virginia Norton city No air monitoring
Virginia Nottoway County No air monitoring
Virginia Orange County No air monitoring
Virginia Page County No air monitoring
Virginia Patrick County No air monitoring
Virginia Petersburg city No air monitoring
Virginia Pittsylvania County No air monitoring
Virginia Poquoson city No air monitoring
Virginia Portsmouth city No air monitoring
Virginia Powhatan County No air monitoring
Virginia Prince Edward County 58ppb
Virginia Prince George County No air monitoring
Virginia Prince William County 63ppb
Virginia Pulaski County No air monitoring
Virginia Radford city No air monitoring
Virginia Rappahannock County No air monitoring
Virginia Richmond city No air monitoring
Virginia Richmond County No air monitoring
Virginia Roanoke city No air monitoring
Virginia Roanoke County 60ppb
Virginia Rockbridge County 57ppb
Virginia Rockingham County 61ppb
Virginia Russell County No air monitoring
Virginia Salem city No air monitoring
Virginia Scott County No air monitoring
Virginia Shenandoah County No air monitoring
Virginia Smyth County No air monitoring
Virginia South Boston city(After 1990, part of Halifax County) No air monitoring
Virginia Southampton County No air monitoring
Virginia Spotsylvania County No air monitoring
Virginia Stafford County 62ppb
Virginia Staunton city No air monitoring
Virginia Suffolk city 57ppb
Virginia Surry County No air monitoring
Virginia Sussex County No air monitoring
Virginia Tazewell County No air monitoring
Virginia Virginia No air monitoring
Virginia Virginia Beach city No air monitoring
Virginia Warren County No air monitoring
Virginia Washington County No air monitoring
Virginia Waynesboro city No air monitoring
Virginia Westmoreland County No air monitoring
Virginia Williamsburg city No air monitoring
Virginia Winchester city No air monitoring
Virginia Wise County No air monitoring
Virginia Wythe County 59ppb
Virginia York County No air monitoring
Washington Adams County No air monitoring
Washington Asotin County No air monitoring
Washington Benton County 66ppb
Washington Chelan County No air monitoring
Washington Clallam County 52ppb
Washington Clark County No air monitoring
Washington Columbia County 58ppb
Washington Cowlitz County No air monitoring
Washington Douglas County No air monitoring
Washington Ferry County No air monitoring
Washington Franklin County No air monitoring
Washington Garfield County No air monitoring
Washington Grant County No air monitoring
Washington Grays Harbor County No air monitoring
Washington Island County No air monitoring
Washington Jefferson County No air monitoring
Washington King County 73ppb
Washington Kitsap County No air monitoring
Washington Kittitas County No air monitoring
Washington Klickitat County No air monitoring
Washington Lewis County No air monitoring
Washington Lincoln County No air monitoring
Washington Mason County No air monitoring
Washington Okanogan County No air monitoring
Washington Pacific County No air monitoring
Washington Pend Oreille County No air monitoring
Washington Pierce County 58ppb
Washington San Juan County No air monitoring
Washington Skagit County 48ppb
Washington Skamania County No air monitoring
Washington Snohomish County No air monitoring
Washington Spokane County 64ppb
Washington Stevens County No air monitoring
Washington Thurston County No air monitoring
Washington Wahkiakum County No air monitoring
Washington Walla Walla County No air monitoring
Washington Washington No air monitoring
Washington Whatcom County No air monitoring
Washington Whitman County No air monitoring
Washington Yakima County No air monitoring
West Virginia Barbour County No air monitoring
West Virginia Berkeley County 62ppb
West Virginia Boone County No air monitoring
West Virginia Braxton County No air monitoring
West Virginia Brooke County No air monitoring
West Virginia Cabell County No air monitoring
West Virginia Calhoun County No air monitoring
West Virginia Clay County No air monitoring
West Virginia Doddridge County No air monitoring
West Virginia Fayette County No air monitoring
West Virginia Gilmer County No air monitoring
West Virginia Grant County No air monitoring
West Virginia Greenbrier County 57ppb
West Virginia Hampshire County No air monitoring
West Virginia Hancock County 66ppb
West Virginia Hardy County No air monitoring
West Virginia Harrison County No air monitoring
West Virginia Jackson County No air monitoring
West Virginia Jefferson County No air monitoring
West Virginia Kanawha County No air monitoring
West Virginia Lewis County No air monitoring
West Virginia Lincoln County No air monitoring
West Virginia Logan County No air monitoring
West Virginia Marion County No air monitoring
West Virginia Marshall County No air monitoring
West Virginia Mason County No air monitoring
West Virginia McDowell County No air monitoring
West Virginia Mercer County No air monitoring
West Virginia Mineral County No air monitoring
West Virginia Mingo County No air monitoring
West Virginia Monongalia County No air monitoring
West Virginia Monroe County No air monitoring
West Virginia Morgan County No air monitoring
West Virginia Nicholas County No air monitoring
West Virginia Ohio County 62ppb
West Virginia Pendleton County No air monitoring
West Virginia Pleasants County No air monitoring
West Virginia Pocahontas County No air monitoring
West Virginia Preston County No air monitoring
West Virginia Putnam County No air monitoring
West Virginia Raleigh County No air monitoring
West Virginia Randolph County No air monitoring
West Virginia Ritchie County No air monitoring
West Virginia Roane County No air monitoring
West Virginia Summers County No air monitoring
West Virginia Taylor County No air monitoring
West Virginia Tucker County 61ppb
West Virginia Tyler County No air monitoring
West Virginia Upshur County No air monitoring
West Virginia Wayne County No air monitoring
West Virginia Webster County No air monitoring
West Virginia West Virginia No air monitoring
West Virginia Wetzel County No air monitoring
West Virginia Wirt County No air monitoring
West Virginia Wood County No air monitoring
West Virginia Wyoming County No air monitoring
Wisconsin Adams County No air monitoring
Wisconsin Ashland County 60ppb
Wisconsin Barron County No air monitoring
Wisconsin Bayfield County No air monitoring
Wisconsin Brown County 67ppb
Wisconsin Buffalo County No air monitoring
Wisconsin Burnett County No air monitoring
Wisconsin Calumet County No air monitoring
Wisconsin Chippewa County No air monitoring
Wisconsin Clark County No air monitoring
Wisconsin Columbia County 69ppb
Wisconsin Crawford County No air monitoring
Wisconsin Dane County 69ppb
Wisconsin Dodge County 70ppb
Wisconsin Door County 72ppb
Wisconsin Douglas County No air monitoring
Wisconsin Dunn County No air monitoring
Wisconsin Eau Claire County 66ppb
Wisconsin Florence County No air monitoring
Wisconsin Fond du Lac County 66ppb
Wisconsin Forest County 63ppb
Wisconsin Grant County No air monitoring
Wisconsin Green County No air monitoring
Wisconsin Green Lake County No air monitoring
Wisconsin Iowa County No air monitoring
Wisconsin Iron County No air monitoring
Wisconsin Jackson County No air monitoring
Wisconsin Jefferson County 69ppb
Wisconsin Juneau County No air monitoring
Wisconsin Kenosha County 77ppb
Wisconsin Kewaunee County 71ppb
Wisconsin La Crosse County 64ppb
Wisconsin Lafayette County No air monitoring
Wisconsin Langlade County No air monitoring
Wisconsin Lincoln County No air monitoring
Wisconsin Manitowoc County 73ppb
Wisconsin Marathon County 64ppb
Wisconsin Marinette County No air monitoring
Wisconsin Marquette County No air monitoring
Wisconsin Menominee County No air monitoring
Wisconsin Milwaukee County 74ppb
Wisconsin Monroe County No air monitoring
Wisconsin Oconto County No air monitoring
Wisconsin Oneida County No air monitoring
Wisconsin Outagamie County 66ppb
Wisconsin Ozaukee County 73ppb
Wisconsin Pepin County No air monitoring
Wisconsin Pierce County No air monitoring
Wisconsin Polk County No air monitoring
Wisconsin Portage County No air monitoring
Wisconsin Price County No air monitoring
Wisconsin Racine County 74ppb
Wisconsin Richland County No air monitoring
Wisconsin Rock County 71ppb
Wisconsin Rusk County No air monitoring
Wisconsin Sauk County 67ppb
Wisconsin Sawyer County No air monitoring
Wisconsin Shawano County No air monitoring
Wisconsin Sheboygan County 77ppb
Wisconsin St. Croix County No air monitoring
Wisconsin Taylor County 64ppb
Wisconsin Trempealeau County No air monitoring
Wisconsin Vernon County No air monitoring
Wisconsin Vilas County 63ppb
Wisconsin Walworth County 73ppb
Wisconsin Washburn County No air monitoring
Wisconsin Washington County No air monitoring
Wisconsin Waukesha County 73ppb
Wisconsin Waupaca County No air monitoring
Wisconsin Waushara County No air monitoring
Wisconsin Winnebago County No air monitoring
Wisconsin Wisconsin No air monitoring
Wisconsin Wood County No air monitoring
Wyoming Albany County 68ppb
Wyoming Big Horn County 60ppb
Wyoming Campbell County 65ppb
Wyoming Carbon County No air monitoring
Wyoming Converse County 62ppb
Wyoming Crook County No air monitoring
Wyoming Fremont County 67ppb
Wyoming Goshen County No air monitoring
Wyoming Hot Springs County No air monitoring
Wyoming Johnson County 63ppb
Wyoming Laramie County 65ppb
Wyoming Lincoln County No air monitoring
Wyoming Natrona County 63ppb
Wyoming Niobrara County No air monitoring
Wyoming Park County No air monitoring
Wyoming Platte County No air monitoring
Wyoming Sheridan County No air monitoring
Wyoming Sublette County 68ppb
Wyoming Sweetwater County 69ppb
Wyoming Teton County 61ppb
Wyoming Uinta County No air monitoring
Wyoming Washakie County No air monitoring
Wyoming Weston County 62ppb
Wyoming Wyoming No air monitoring

About the map data

Based on the U.S. Environmental Protection Agency’s “design values” for 8-hour ozone for U.S counties.

A “design value” is the official EPA measure of whether a county complies with the primary (health-protective) annual national ambient air quality standard. Design values are derived from air quality monitoring data that comes from air quality monitors operated by governmental agencies, like EPA or states, that sample the air to measure the amount of pollutant in the air.

Not all counties in the United States have an official air quality monitor.

The design values shown here are computed using Federal Reference Method or equivalent data reported by state, Tribal, and local monitoring agencies to EPA's Air Quality System (AQS) as of May 7, 2024. Concentrations flagged by state, Tribal, or local monitoring agencies as having been affected by an exceptional event (e.g., wildfire, volcanic eruption) and concurred by the associated EPA Regional Office are not included in these calculations.

Earthjustice’s Washington, D.C., office works at the federal level to prevent air and water pollution, combat climate change, and protect natural areas. We also work with communities in the Mid-Atlantic region and elsewhere to address severe local environmental health problems, including exposures to dangerous air contaminants in toxic hot spots, sewage backups and overflows, chemical disasters, and contamination of drinking water. The D.C. office has been in operation since 1978.