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.

The smog standard is currently set at 70 parts per billion. Public health experts and doctors recommend that the standard be strengthened to 55–60ppb.

The Smog Standard: Measures average smog levels over 8-hour periods. Currently set at 70 parts per billion. In 2023, all but one of the EPA’s 18 independent scientific experts recommended that the agency strengthen the smog standard to 55–60ppb.

Alabama Autauga County No air monitoring
Alabama Baldwin County 58ppb
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 58ppb
Alabama Elmore County 53ppb
Alabama Escambia County No air monitoring
Alabama Etowah County 57ppb
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 63ppb
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 61ppb
Alabama Marengo County No air monitoring
Alabama Marion County No air monitoring
Alabama Marshall County No air monitoring
Alabama Mobile County 57ppb
Alabama Monroe County No air monitoring
Alabama Montgomery County 58ppb
Alabama Morgan County 60ppb
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 57ppb
Alabama St. Clair County No air monitoring
Alabama Shelby County 61ppb
Alabama Sumter County 53ppb
Alabama Talladega County No air monitoring
Alabama Tallapoosa County No air monitoring
Alabama Tuscaloosa County 55ppb
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 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 53ppb
Alaska Dillingham Census Area No air monitoring
Alaska Fairbanks North Star Borough No air monitoring
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-Yakutat-Angoon Census Area No air monitoring
Alaska Skagway-Hoonah-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 Cochise County 65ppb
Arizona Coconino County 63ppb
Arizona Gila County 76ppb
Arizona Graham County No air monitoring
Arizona Greenlee County No air monitoring
Arizona La Paz County 65ppb
Arizona Maricopa County 81ppb
Arizona Mohave County No air monitoring
Arizona Navajo County 66ppb
Arizona Pima County 70ppb
Arizona Pinal County 76ppb
Arizona Santa Cruz County No air monitoring
Arizona Yavapai County 62ppb
Arizona Yuma County 68ppb
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 57ppb
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 70ppb
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 60ppb
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 61ppb
Arkansas Pope County No air monitoring
Arkansas Prairie County No air monitoring
Arkansas Pulaski County 64ppb
Arkansas Randolph County No air monitoring
Arkansas St. Francis 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 Stone County No air monitoring
Arkansas Union County No air monitoring
Arkansas Van Buren County No air monitoring
Arkansas Washington County 62ppb
Arkansas White County No air monitoring
Arkansas Woodruff County No air monitoring
Arkansas Yell County No air monitoring
California Alameda County 69ppb
California Alpine County No air monitoring
California Amador County 66ppb
California Butte County 71ppb
California Calaveras County 68ppb
California Colusa County 56ppb
California Contra Costa County 69ppb
California Del Norte County No air monitoring
California El Dorado County 77ppb
California Fresno County 84ppb
California Glenn County 61ppb
California Humboldt County 38ppb
California Imperial County 77ppb
California Inyo County 72ppb
California Kern County 94ppb
California Kings County 78ppb
California Lake County 55ppb
California Lassen County No air monitoring
California Los Angeles County 102ppb
California Madera County 82ppb
California Marin County 57ppb
California Mariposa County 83ppb
California Mendocino County 56ppb
California Merced County 76ppb
California Modoc County No air monitoring
California Mono County No air monitoring
California Monterey County 57ppb
California Napa County No air monitoring
California Nevada County 81ppb
California Orange County 80ppb
California Placer County 81ppb
California Plumas County No air monitoring
California Riverside County 99ppb
California Sacramento County 76ppb
California San Benito County 67ppb
California San Bernardino County 113ppb
California San Diego County 79ppb
California San Francisco County 47ppb
California San Joaquin County 66ppb
California San Luis Obispo County 71ppb
California San Mateo County 55ppb
California Santa Barbara County 64ppb
California Santa Clara County 69ppb
California Santa Cruz County 49ppb
California Shasta County 68ppb
California Sierra County No air monitoring
California Siskiyou County 60ppb
California Solano County 64ppb
California Sonoma County 52ppb
California Stanislaus County 79ppb
California Sutter County 73ppb
California Tehama County 73ppb
California Trinity County No air monitoring
California Tulare County 91ppb
California Tuolumne County 66ppb
California Ventura County 76ppb
California Yolo County 68ppb
California Yuba County No air monitoring
Colorado Adams County 77ppb
Colorado Alamosa County No air monitoring
Colorado Arapahoe County 80ppb
Colorado Archuleta County 64ppb
Colorado Baca County No air monitoring
Colorado Bent County No air monitoring
Colorado Boulder County 76ppb
Colorado Chaffee County No air monitoring
Colorado Cheyenne County No air monitoring
Colorado Clear Creek County 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 77ppb
Colorado Dolores County No air monitoring
Colorado Douglas County 83ppb
Colorado Eagle County No air monitoring
Colorado Elbert County No air monitoring
Colorado El Paso County 74ppb
Colorado Fremont County No air monitoring
Colorado Garfield County 62ppb
Colorado Gilpin County 76ppb
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 84ppb
Colorado Kiowa County No air monitoring
Colorado Kit Carson County No air monitoring
Colorado Lake County No air monitoring
Colorado La Plata County 66ppb
Colorado Larimer County 77ppb
Colorado Las Animas County No air monitoring
Colorado Lincoln County No air monitoring
Colorado Logan County No air monitoring
Colorado Mesa County 65ppb
Colorado Mineral County No air monitoring
Colorado Moffat County No air monitoring
Colorado Montezuma County 66ppb
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 65ppb
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 77ppb
Colorado Yuma County No air monitoring
Connecticut Fairfield County 81ppb
Connecticut Hartford County 68ppb
Connecticut Litchfield County 67ppb
Connecticut Middlesex County 73ppb
Connecticut New Haven County 79ppb
Connecticut New London County 72ppb
Connecticut Tolland County 66ppb
Connecticut Windham County 64ppb
Delaware Kent County No air monitoring
Delaware New Castle County No air monitoring
Delaware Sussex County No air monitoring
District of Columbia District of Columbia No air monitoring
District of Columbia District of Columbia 67ppb
Florida Alachua County 58ppb
Florida Baker County 58ppb
Florida Bay County 57ppb
Florida Bradford County No air monitoring
Florida Brevard County 59ppb
Florida Broward County 59ppb
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 56ppb
Florida Columbia County No air monitoring
Florida Dade County No air monitoring
Florida DeSoto County No air monitoring
Florida Dixie County No air monitoring
Florida Duval County 60ppb
Florida Escambia County 60ppb
Florida Flagler County 56ppb
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 58ppb
Florida Hillsborough County 65ppb
Florida Holmes County 55ppb
Florida Indian River County 59ppb
Florida Jackson County No air monitoring
Florida Jefferson County No air monitoring
Florida Lafayette County No air monitoring
Florida Lake County 60ppb
Florida Lee County No air monitoring
Florida Leon County 57ppb
Florida Levy County No air monitoring
Florida Liberty County 56ppb
Florida Madison County No air monitoring
Florida Manatee County 58ppb
Florida Marion County 62ppb
Florida Martin County 55ppb
Florida Miami-Dade County 60ppb
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 62ppb
Florida Osceola County 60ppb
Florida Palm Beach County 56ppb
Florida Pasco County 60ppb
Florida Pinellas County 61ppb
Florida Polk County 61ppb
Florida Putnam County No air monitoring
Florida St. Johns County No air monitoring
Florida St. Lucie County 57ppb
Florida Santa Rosa County 60ppb
Florida Sarasota County 61ppb
Florida Seminole County 60ppb
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 55ppb
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 58ppb
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 56ppb
Georgia Chattahoochee County No air monitoring
Georgia Chattooga County 56ppb
Georgia Cherokee County No air monitoring
Georgia Clarke County 59ppb
Georgia Clay County No air monitoring
Georgia Clayton County No air monitoring
Georgia Clinch County No air monitoring
Georgia Cobb County 61ppb
Georgia Coffee County No air monitoring
Georgia Colquitt County No air monitoring
Georgia Columbia County 55ppb
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 59ppb
Georgia Decatur County No air monitoring
Georgia DeKalb County 64ppb
Georgia Dodge County No air monitoring
Georgia Dooly County No air monitoring
Georgia Dougherty County No air monitoring
Georgia Douglas County 63ppb
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 65ppb
Georgia Gilmer County No air monitoring
Georgia Glascock County No air monitoring
Georgia Glynn County 54ppb
Georgia Gordon County No air monitoring
Georgia Grady County No air monitoring
Georgia Greene County No air monitoring
Georgia Gwinnett County 64ppb
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 64ppb
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 McDuffie County No air monitoring
Georgia McIntosh County No air monitoring
Georgia Macon County No air monitoring
Georgia Madison County No air monitoring
Georgia Marion 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 62ppb
Georgia Muscogee County 57ppb
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 58ppb
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 60ppb
Georgia Rockdale County 62ppb
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 57ppb
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 County No air monitoring
Hawaii Honolulu County 44ppb
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 63ppb
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 65ppb
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 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 61ppb
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 65ppb
Illinois Christian County No air monitoring
Illinois Clark County 61ppb
Illinois Clay County No air monitoring
Illinois Clinton County No air monitoring
Illinois Coles County No air monitoring
Illinois Cook County 75ppb
Illinois Crawford County No air monitoring
Illinois Cumberland County No air monitoring
Illinois DeKalb County No air monitoring
Illinois De Witt County No air monitoring
Illinois Douglas County No air monitoring
Illinois DuPage County 70ppb
Illinois Edgar County No air monitoring
Illinois Edwards County No air monitoring
Illinois Effingham County No air monitoring
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 65ppb
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 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 66ppb
Illinois Jo Daviess County 62ppb
Illinois Johnson County No air monitoring
Illinois Kane County 70ppb
Illinois Kankakee County No air monitoring
Illinois Kendall County No air monitoring
Illinois Knox County No air monitoring
Illinois Lake County 74ppb
Illinois La Salle County No air monitoring
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 McDonough County No air monitoring
Illinois McHenry County 71ppb
Illinois McLean County 67ppb
Illinois Macon County 64ppb
Illinois Macoupin County 62ppb
Illinois Madison County 71ppb
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 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 65ppb
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 64ppb
Illinois Richland County No air monitoring
Illinois Rock Island County 63ppb
Illinois St. Clair County 66ppb
Illinois Saline County No air monitoring
Illinois Sangamon County 62ppb
Illinois Schuyler County No air monitoring
Illinois Scott County No air monitoring
Illinois Shelby County No air monitoring
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 65ppb
Illinois Williamson County No air monitoring
Illinois Winnebago County 66ppb
Illinois Woodford County No air monitoring
Indiana Adams County No air monitoring
Indiana Allen County 66ppb
Indiana Bartholomew County 64ppb
Indiana Benton County No air monitoring
Indiana Blackford County No air monitoring
Indiana Boone County 67ppb
Indiana Brown County 61ppb
Indiana Carroll County 64ppb
Indiana Cass County No air monitoring
Indiana Clark County 63ppb
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 Dearborn County No air monitoring
Indiana Decatur County No air monitoring
Indiana De Kalb County No air monitoring
Indiana Delaware County 64ppb
Indiana Dubois County No air monitoring
Indiana Elkhart County 61ppb
Indiana Fayette County No air monitoring
Indiana Floyd County 64ppb
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 64ppb
Indiana Hamilton County 64ppb
Indiana Hancock County No air monitoring
Indiana Harrison County No air monitoring
Indiana Hendricks County 62ppb
Indiana Henry County No air monitoring
Indiana Howard County 66ppb
Indiana Huntington County 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 66ppb
Indiana Kosciusko County No air monitoring
Indiana Lagrange County No air monitoring
Indiana Lake County 71ppb
Indiana La Porte County 73ppb
Indiana Lawrence County No air monitoring
Indiana Madison County No air monitoring
Indiana Marion County 68ppb
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 64ppb
Indiana Pike County No air monitoring
Indiana Porter County 73ppb
Indiana Posey County 61ppb
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 St. Joseph County 67ppb
Indiana Scott County No air monitoring
Indiana Shelby County 63ppb
Indiana Spencer County No air monitoring
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 66ppb
Indiana Vermillion County No air monitoring
Indiana Vigo County 65ppb
Indiana Wabash County 65ppb
Indiana Warren County No air monitoring
Indiana Warrick County 66ppb
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 60ppb
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 63ppb
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 61ppb
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 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 61ppb
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 57ppb
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 61ppb
Iowa Plymouth County No air monitoring
Iowa Pocahontas County No air monitoring
Iowa Polk County 58ppb
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 60ppb
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 56ppb
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 60ppb
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 61ppb
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 McPherson County No air monitoring
Kansas Marion County No air monitoring
Kansas Marshall 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 60ppb
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 64ppb
Kansas Seward County No air monitoring
Kansas Shawnee County 59ppb
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 63ppb
Kansas Thomas County No air monitoring
Kansas Trego County 62ppb
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 65ppb
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 56ppb
Kentucky Boone County No air monitoring
Kentucky Bourbon County No air monitoring
Kentucky Boyd County 59ppb
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 64ppb
Kentucky Butler County No air monitoring
Kentucky Caldwell County No air monitoring
Kentucky Calloway County No air monitoring
Kentucky Campbell County 63ppb
Kentucky Carlisle County No air monitoring
Kentucky Carroll County No air monitoring
Kentucky Carter County 56ppb
Kentucky Casey County No air monitoring
Kentucky Christian County 59ppb
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 64ppb
Kentucky Edmonson County 59ppb
Kentucky Elliott County No air monitoring
Kentucky Estill County No air monitoring
Kentucky Fayette County 63ppb
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 55ppb
Kentucky Hancock County 65ppb
Kentucky Hardin County 61ppb
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 70ppb
Kentucky Jessamine County 62ppb
Kentucky Johnson County No air monitoring
Kentucky Kenton County 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 64ppb
Kentucky Logan County No air monitoring
Kentucky Lyon County No air monitoring
Kentucky McCracken County 65ppb
Kentucky McCreary County No air monitoring
Kentucky McLean 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 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 57ppb
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 63ppb
Kentucky Owen County No air monitoring
Kentucky Owsley County No air monitoring
Kentucky Pendleton County No air monitoring
Kentucky Perry County 56ppb
Kentucky Pike County 55ppb
Kentucky Powell County No air monitoring
Kentucky Pulaski County 58ppb
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 60ppb
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 60ppb
Kentucky Washington County 60ppb
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 64ppb
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 58ppb
Louisiana Caddo Parish 60ppb
Louisiana Calcasieu Parish 63ppb
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 65ppb
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 69ppb
Louisiana Jackson Parish No air monitoring
Louisiana Jefferson Parish 62ppb
Louisiana Jefferson Davis Parish No air monitoring
Louisiana Lafayette Parish 61ppb
Louisiana Lafourche Parish 59ppb
Louisiana La Salle Parish No air monitoring
Louisiana Lincoln Parish No air monitoring
Louisiana Livingston Parish 62ppb
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 58ppb
Louisiana Plaquemines Parish No air monitoring
Louisiana Pointe Coupee Parish 64ppb
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 58ppb
Louisiana St. Charles Parish No air monitoring
Louisiana St. Helena Parish No air monitoring
Louisiana St. James Parish 59ppb
Louisiana St. John the Baptist Parish 60ppb
Louisiana St. Landry Parish No air monitoring
Louisiana St. Martin Parish 62ppb
Louisiana St. Mary Parish No air monitoring
Louisiana St. Tammany Parish 60ppb
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 66ppb
Louisiana West Carroll Parish No air monitoring
Louisiana West Feliciana Parish No air monitoring
Louisiana Winn Parish No air monitoring
Maine Androscoggin County 56ppb
Maine Aroostook County 50ppb
Maine Cumberland County 62ppb
Maine Franklin County No air monitoring
Maine Hancock County 67ppb
Maine Kennebec County 54ppb
Maine Knox County 59ppb
Maine Lincoln County No air monitoring
Maine Oxford County 54ppb
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 55ppb
Maine York County 64ppb
Maryland Allegany County No air monitoring
Maryland Anne Arundel County 66ppb
Maryland Baltimore County 68ppb
Maryland Calvert County 58ppb
Maryland Caroline County No air monitoring
Maryland Carroll County 64ppb
Maryland Cecil County 65ppb
Maryland Charles County 59ppb
Maryland Dorchester County 63ppb
Maryland Frederick County 63ppb
Maryland Garrett County 58ppb
Maryland Harford County 68ppb
Maryland Howard County No air monitoring
Maryland Kent County 64ppb
Maryland Montgomery County 63ppb
Maryland Prince George's County 67ppb
Maryland Queen Anne's County No air monitoring
Maryland St. Mary's County No air monitoring
Maryland Somerset County No air monitoring
Maryland Talbot County No air monitoring
Maryland Washington County 61ppb
Maryland Wicomico County No air monitoring
Maryland Worcester County No air monitoring
Maryland Baltimore city No air monitoring
Massachusetts Barnstable County 64ppb
Massachusetts Berkshire County 60ppb
Massachusetts Bristol County 65ppb
Massachusetts Dukes County 62ppb
Massachusetts Essex County 64ppb
Massachusetts Franklin County 56ppb
Massachusetts Hampden County 64ppb
Massachusetts Hampshire County 62ppb
Massachusetts Middlesex County 60ppb
Massachusetts Nantucket County No air monitoring
Massachusetts Norfolk County 58ppb
Massachusetts Plymouth County 61ppb
Massachusetts Suffolk County 61ppb
Massachusetts Worcester County 62ppb
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 64ppb
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 67ppb
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 70ppb
Michigan Ingham County 62ppb
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 68ppb
Michigan Kalkaska County No air monitoring
Michigan Kent County 71ppb
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 66ppb
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 No air monitoring
Michigan Marquette County No air monitoring
Michigan Mason County 67ppb
Michigan Mecosta County No air monitoring
Michigan Menominee County No air monitoring
Michigan Midland County No air monitoring
Michigan