November 29, 2023
What’s the state of soot pollution where you live?
Soot — also known as fine particulate matter or PM2.5 — causes death and serious health harms. Many areas lack air monitors. Rigorous monitoring is critical for protecting public health. Read the full story.
The Soot Standard: Measures average soot levels over one year. Set at 9 micrograms per cubic meter (µg/m3).
| Alabama | Autauga County | No air monitoring |
| Alabama | Baldwin County | 7.5µg/m3 |
| 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 | 6.8µg/m3 |
| 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 | 7.2µg/m3 |
| Alabama | Elmore County | No air monitoring |
| Alabama | Escambia County | No air monitoring |
| Alabama | Etowah County | 8.2µg/m3 |
| 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 | 8.4µg/m3 |
| 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 | 7.1µg/m3 |
| Alabama | Marengo County | No air monitoring |
| Alabama | Marion County | No air monitoring |
| Alabama | Marshall County | No air monitoring |
| Alabama | Mobile County | 7.9µg/m3 |
| Alabama | Monroe County | No air monitoring |
| Alabama | Montgomery County | No air monitoring |
| Alabama | Morgan County | 7.4µg/m3 |
| 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 | 9.1µg/m3 |
| Alabama | St. Clair County | No air monitoring |
| Alabama | Shelby County | No air monitoring |
| Alabama | Sumter County | No air monitoring |
| Alabama | Talladega County | No air monitoring |
| Alabama | Tallapoosa County | No air monitoring |
| Alabama | Tuscaloosa County | 7.6µg/m3 |
| 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 | 5.6µg/m3 |
| Alaska | Bethel Census Area | No air monitoring |
| Alaska | Bristol Bay Borough | No air monitoring |
| Alaska | Denali Borough | No air monitoring |
| Alaska | Dillingham Census Area | No air monitoring |
| Alaska | Fairbanks North Star Borough | 12.2µg/m3 |
| Alaska | Haines Borough | No air monitoring |
| Alaska | Juneau Borough | 4.9µg/m3 |
| 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 | 4.5µg/m3 |
| 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 | No air monitoring |
| Arizona | Coconino County | No air monitoring |
| Arizona | Gila County | No air monitoring |
| Arizona | Graham County | No air monitoring |
| Arizona | Greenlee County | No air monitoring |
| Arizona | La Paz County | 4.1µg/m3 |
| Arizona | Maricopa County | 10.5µg/m3 |
| Arizona | Mohave County | No air monitoring |
| Arizona | Navajo County | No air monitoring |
| Arizona | Pima County | 6.1µg/m3 |
| Arizona | Pinal County | 12.4µg/m3 |
| Arizona | Santa Cruz County | 10.2µg/m3 |
| Arizona | Yavapai County | No air monitoring |
| Arizona | Yuma County | 8.9µg/m3 |
| Arkansas | Arkansas County | 7.5µg/m3 |
| 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 | No air monitoring |
| 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 | 7.8µg/m3 |
| 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 | No air monitoring |
| 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 | 7.8µg/m3 |
| Arkansas | Pope County | No air monitoring |
| Arkansas | Prairie County | No air monitoring |
| Arkansas | Pulaski County | 8.8µg/m3 |
| 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 | 7.5µg/m3 |
| Arkansas | White County | No air monitoring |
| Arkansas | Woodruff County | No air monitoring |
| Arkansas | Yell County | No air monitoring |
| California | Alameda County | 9.4µg/m3 |
| California | Alpine County | No air monitoring |
| California | Amador County | No air monitoring |
| California | Butte County | 11.6µg/m3 |
| California | Calaveras County | 9µg/m3 |
| California | Colusa County | 10.5µg/m3 |
| California | Contra Costa County | 10µg/m3 |
| California | Del Norte County | No air monitoring |
| California | El Dorado County | No air monitoring |
| California | Fresno County | 17.5µg/m3 |
| California | Glenn County | No air monitoring |
| California | Humboldt County | 7.4µg/m3 |
| California | Imperial County | 11.1µg/m3 |
| California | Inyo County | 8.8µg/m3 |
| California | Kern County | 18.8µg/m3 |
| California | Kings County | 16.6µg/m3 |
| California | Lake County | 6.6µg/m3 |
| California | Lassen County | No air monitoring |
| California | Los Angeles County | 13.4µg/m3 |
| California | Madera County | 13.2µg/m3 |
| California | Marin County | 7.5µg/m3 |
| California | Mariposa County | No air monitoring |
| California | Mendocino County | 11.1µg/m3 |
| California | Merced County | 12.3µg/m3 |
| California | Modoc County | No air monitoring |
| California | Mono County | 19.5µg/m3 |
| California | Monterey County | 6.9µg/m3 |
| California | Napa County | No air monitoring |
| California | Nevada County | 8.9µg/m3 |
| California | Orange County | 11.2µg/m3 |
| California | Placer County | 10.9µg/m3 |
| California | Plumas County | 17µg/m3 |
| California | Riverside County | 13.6µg/m3 |
| California | Sacramento County | 11.7µg/m3 |
| California | San Benito County | 6.5µg/m3 |
| California | San Bernardino County | 14µg/m3 |
| California | San Diego County | 10µg/m3 |
| California | San Francisco County | 8.2µg/m3 |
| California | San Joaquin County | 12.3µg/m3 |
| California | San Luis Obispo County | 8.7µg/m3 |
| California | San Mateo County | 7.6µg/m3 |
| California | Santa Barbara County | 8µg/m3 |
| California | Santa Clara County | 10.7µg/m3 |
| California | Santa Cruz County | 7.2µg/m3 |
| California | Shasta County | 9.3µg/m3 |
| California | Sierra County | No air monitoring |
| California | Siskiyou County | 11.6µg/m3 |
| California | Solano County | 9.4µg/m3 |
| California | Sonoma County | 7.3µg/m3 |
| California | Stanislaus County | 14.3µg/m3 |
| California | Sutter County | 13.8µg/m3 |
| California | Tehama County | 9.9µg/m3 |
| California | Trinity County | No air monitoring |
| California | Tulare County | 18.4µg/m3 |
| California | Tuolumne County | No air monitoring |
| California | Ventura County | 7.8µg/m3 |
| California | Yolo County | No air monitoring |
| California | Yuba County | No air monitoring |
| Colorado | Adams County | No air monitoring |
| Colorado | Alamosa County | No air monitoring |
| Colorado | Arapahoe County | 6.1µg/m3 |
| Colorado | Archuleta County | No air monitoring |
| Colorado | Baca County | No air monitoring |
| Colorado | Bent County | No air monitoring |
| Colorado | Boulder County | 8.7µg/m3 |
| 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 | 9.3µg/m3 |
| Colorado | Dolores County | No air monitoring |
| Colorado | Douglas County | 6.7µg/m3 |
| Colorado | Eagle County | No air monitoring |
| Colorado | Elbert County | No air monitoring |
| Colorado | El Paso County | 5.5µg/m3 |
| Colorado | Fremont County | No air monitoring |
| Colorado | Garfield County | No air monitoring |
| Colorado | Gilpin County | No air monitoring |
| Colorado | Grand County | No air monitoring |
| Colorado | Gunnison County | No air monitoring |
| Colorado | Hinsdale County | No air monitoring |
| Colorado | Huerfano County | No air monitoring |
| Colorado | Jackson County | No air monitoring |
| Colorado | Jefferson County | No air monitoring |
| Colorado | Kiowa County | No air monitoring |
| Colorado | Kit Carson County | No air monitoring |
| Colorado | Lake County | No air monitoring |
| Colorado | La Plata County | No air monitoring |
| Colorado | Larimer County | 7.7µg/m3 |
| Colorado | Las Animas County | No air monitoring |
| Colorado | Lincoln County | No air monitoring |
| Colorado | Logan County | No air monitoring |
| Colorado | Mesa County | 5.8µg/m3 |
| Colorado | Mineral County | No air monitoring |
| Colorado | Moffat County | No air monitoring |
| Colorado | Montezuma County | No air monitoring |
| 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 | 8.5µg/m3 |
| 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 | 8.8µg/m3 |
| Colorado | Yuma County | No air monitoring |
| Connecticut | Fairfield County | 8µg/m3 |
| Connecticut | Hartford County | 7.5µg/m3 |
| Connecticut | Litchfield County | 5.1µg/m3 |
| Connecticut | Middlesex County | No air monitoring |
| Connecticut | New Haven County | 8.2µg/m3 |
| Connecticut | New London County | 6.9µg/m3 |
| Connecticut | Tolland County | No air monitoring |
| Connecticut | Windham County | No air monitoring |
| 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 | 8.6µg/m3 |
| Florida | Alachua County | 7.1µg/m3 |
| Florida | Baker County | No air monitoring |
| Florida | Bay County | No air monitoring |
| Florida | Bradford County | No air monitoring |
| Florida | Brevard County | 7.9µg/m3 |
| Florida | Broward County | 9.4µg/m3 |
| 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 | No air monitoring |
| 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 | 8.7µg/m3 |
| Florida | Escambia County | 9.5µg/m3 |
| Florida | Flagler County | 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 | No air monitoring |
| Florida | Hillsborough County | 8.3µg/m3 |
| Florida | Holmes County | No air monitoring |
| Florida | Indian River County | No air monitoring |
| Florida | Jackson County | No air monitoring |
| Florida | Jefferson County | No air monitoring |
| Florida | Lafayette County | No air monitoring |
| Florida | Lake County | No air monitoring |
| Florida | Lee County | No air monitoring |
| Florida | Leon County | 7.2µg/m3 |
| Florida | Levy County | No air monitoring |
| Florida | Liberty County | No air monitoring |
| Florida | Madison County | No air monitoring |
| Florida | Manatee County | No air monitoring |
| Florida | Marion County | No air monitoring |
| Florida | Martin County | No air monitoring |
| Florida | Miami-Dade County | 7.1µg/m3 |
| 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 | No air monitoring |
| Florida | Osceola County | No air monitoring |
| Florida | Palm Beach County | 6.7µg/m3 |
| Florida | Pasco County | No air monitoring |
| Florida | Pinellas County | 7.7µg/m3 |
| Florida | Polk County | 8.3µg/m3 |
| Florida | Putnam County | No air monitoring |
| Florida | St. Johns County | No air monitoring |
| Florida | St. Lucie County | No air monitoring |
| Florida | Santa Rosa County | No air monitoring |
| Florida | Sarasota County | 7.9µg/m3 |
| Florida | Seminole County | 7.5µg/m3 |
| 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 | 8.3µg/m3 |
| Florida | Wakulla County | No air monitoring |
| 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 | 8.8µg/m3 |
| 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 | No air monitoring |
| Georgia | Chattahoochee County | No air monitoring |
| Georgia | Chattooga County | No air monitoring |
| Georgia | Cherokee County | No air monitoring |
| Georgia | Clarke County | 9.2µg/m3 |
| Georgia | Clay County | No air monitoring |
| Georgia | Clayton County | 8.4µg/m3 |
| Georgia | Clinch County | No air monitoring |
| Georgia | Cobb County | 8.4µg/m3 |
| Georgia | Coffee County | 6.9µg/m3 |
| Georgia | Colquitt County | No air monitoring |
| Georgia | Columbia County | No air monitoring |
| 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 | No air monitoring |
| Georgia | Decatur County | No air monitoring |
| Georgia | DeKalb County | 9µg/m3 |
| Georgia | Dodge County | No air monitoring |
| Georgia | Dooly County | No air monitoring |
| Georgia | Dougherty County | 9.2µg/m3 |
| Georgia | Douglas County | No air monitoring |
| 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 | 9.4µg/m3 |
| Georgia | Gilmer County | No air monitoring |
| Georgia | Glascock County | No air monitoring |
| Georgia | Glynn County | 8.1µg/m3 |
| Georgia | Gordon County | No air monitoring |
| Georgia | Grady County | No air monitoring |
| Georgia | Greene County | No air monitoring |
| Georgia | Gwinnett County | 8.8µg/m3 |
| Georgia | Habersham County | No air monitoring |
| Georgia | Hall County | 8.8µg/m3 |
| 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 | No air monitoring |
| Georgia | Houston County | 9.1µg/m3 |
| 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 | 8.6µg/m3 |
| 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 | No air monitoring |
| Georgia | Muscogee County | 8.3µg/m3 |
| 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 | No air monitoring |
| 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 | 10.4µg/m3 |
| Georgia | Rockdale County | No air monitoring |
| 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 | No air monitoring |
| 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 | 10.2µg/m3 |
| 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 | 3.4µg/m3 |
| Hawaii | Honolulu County | 3.7µg/m3 |
| Hawaii | Kalawao County | No air monitoring |
| Hawaii | Kauai County | No air monitoring |
| Hawaii | Maui County | 4µg/m3 |
| Idaho | Ada County | 8.1µg/m3 |
| Idaho | Adams County | No air monitoring |
| Idaho | Bannock County | No air monitoring |
| Idaho | Bear Lake County | No air monitoring |
| Idaho | Benewah County | 10.2µg/m3 |
| 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 | No air monitoring |
| 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 | 6.6µg/m3 |
| Idaho | Fremont County | No air monitoring |
| Idaho | Gem County | No air monitoring |
| Idaho | Gooding County | No air monitoring |
| Idaho | Idaho County | No air monitoring |
| 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 | 11.3µg/m3 |
| 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 | 10.7µg/m3 |
| 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 | No air monitoring |
| 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 | 7.8µg/m3 |
| Illinois | Christian County | No air monitoring |
| Illinois | Clark County | No air monitoring |
| Illinois | Clay County | No air monitoring |
| Illinois | Clinton County | No air monitoring |
| Illinois | Coles County | No air monitoring |
| Illinois | Cook County | 10.5µg/m3 |
| 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 | 9.5µg/m3 |
| 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 | 8.8µg/m3 |
| 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 | 8µg/m3 |
| Illinois | Jo Daviess County | No air monitoring |
| Illinois | Johnson County | No air monitoring |
| Illinois | Kane County | 9.2µg/m3 |
| Illinois | Kankakee County | No air monitoring |
| Illinois | Kendall County | No air monitoring |
| Illinois | Knox County | No air monitoring |
| Illinois | Lake County | No air monitoring |
| 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 | 8.9µg/m3 |
| Illinois | McLean County | 8.9µg/m3 |
| Illinois | Macon County | 9.2µg/m3 |
| Illinois | Macoupin County | No air monitoring |
| Illinois | Madison County | 10µg/m3 |
| 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 | No air monitoring |
| 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 | 8.2µg/m3 |
| Illinois | Richland County | No air monitoring |
| Illinois | Rock Island County | 8.8µg/m3 |
| Illinois | St. Clair County | 10µg/m3 |
| Illinois | Saline County | No air monitoring |
| Illinois | Sangamon County | 8.3µg/m3 |
| 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 | 9.7µg/m3 |
| Illinois | Williamson County | No air monitoring |
| Illinois | Winnebago County | 9.1µg/m3 |
| Illinois | Woodford County | No air monitoring |
| Indiana | Adams County | No air monitoring |
| Indiana | Allen County | No air monitoring |
| Indiana | Bartholomew County | 7µg/m3 |
| Indiana | Benton County | No air monitoring |
| Indiana | Blackford County | No air monitoring |
| Indiana | Boone County | No air monitoring |
| Indiana | Brown County | No air monitoring |
| Indiana | Carroll County | No air monitoring |
| Indiana | Cass County | No air monitoring |
| Indiana | Clark County | 9.9µg/m3 |
| 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 | 8.1µg/m3 |
| Indiana | Dubois County | 8.8µg/m3 |
| Indiana | Elkhart County | 8.4µg/m3 |
| Indiana | Fayette County | No air monitoring |
| Indiana | Floyd County | No air monitoring |
| 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 | 7.7µg/m3 |
| Indiana | Hamilton County | 9.8µg/m3 |
| Indiana | Hancock County | No air monitoring |
| Indiana | Harrison County | No air monitoring |
| Indiana | Hendricks County | No air monitoring |
| Indiana | Henry County | 7.5µg/m3 |
| Indiana | Howard County | 7.4µg/m3 |
| 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 | No air monitoring |
| Indiana | Kosciusko County | No air monitoring |
| Indiana | Lagrange County | No air monitoring |
| Indiana | Lake County | 9.8µg/m3 |
| Indiana | La Porte County | 8.1µg/m3 |
| Indiana | Lawrence County | No air monitoring |
| Indiana | Madison County | 8.9µg/m3 |
| Indiana | Marion County | 11.9µg/m3 |
| Indiana | Marshall County | No air monitoring |
| Indiana | Martin County | No air monitoring |
| Indiana | Miami County | No air monitoring |
| Indiana | Monroe County | 7.7µg/m3 |
| 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 | No air monitoring |
| Indiana | Pike County | No air monitoring |
| Indiana | Porter County | 8.3µg/m3 |
| Indiana | Posey County | No air monitoring |
| 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 | 9.6µg/m3 |
| Indiana | Scott County | No air monitoring |
| Indiana | Shelby County | No air monitoring |
| Indiana | Spencer County | 8.2µg/m3 |
| 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 | 8.4µg/m3 |
| Indiana | Tipton County | No air monitoring |
| Indiana | Union County | No air monitoring |
| Indiana | Vanderburgh County | 9.2µg/m3 |
| Indiana | Vermillion County | No air monitoring |
| Indiana | Vigo County | 8.7µg/m3 |
| Indiana | Wabash County | No air monitoring |
| Indiana | Warren County | No air monitoring |
| Indiana | Warrick County | No air monitoring |
| 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 | 7.6µg/m3 |
| 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 | 7.9µg/m3 |
| Iowa | Boone County | No air monitoring |
| Iowa | Bremer County | No air monitoring |
| 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 | 8.6µg/m3 |
| 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 | No air monitoring |
| 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 | 7.8µg/m3 |
| Iowa | Jones County | No air monitoring |
| Iowa | Keokuk County | No air monitoring |
| Iowa | Kossuth County | No air monitoring |
| Iowa | Lee County | 8.2µg/m3 |
| Iowa | Linn County | 8.1µg/m3 |
| 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 | 6.7µg/m3 |
| Iowa | Muscatine County | 8.1µg/m3 |
| Iowa | O'Brien County | No air monitoring |
| Iowa | Osceola County | No air monitoring |
| Iowa | Page County | No air monitoring |
| Iowa | Palo Alto County | 7µg/m3 |
| Iowa | Plymouth County | No air monitoring |
| Iowa | Pocahontas County | No air monitoring |
| Iowa | Polk County | 7.6µg/m3 |
| Iowa | Pottawattamie County | 8.2µg/m3 |
| Iowa | Poweshiek County | No air monitoring |
| Iowa | Ringgold County | No air monitoring |
| Iowa | Sac County | No air monitoring |
| Iowa | Scott County | 8.4µg/m3 |
| 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 | 7.1µg/m3 |
| 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 | 7.9µg/m3 |
| 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 | 8.9µg/m3 |
| 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 | No air monitoring |
| 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 | 9.6µg/m3 |
| 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 | No air monitoring |
| Kansas | Seward County | No air monitoring |
| Kansas | Shawnee County | No air monitoring |
| 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 | 9.8µg/m3 |
| Kansas | Thomas County | No air monitoring |
| Kansas | Trego County | No air monitoring |
| 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 | 10.8µg/m3 |
| 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 | 9.3µg/m3 |
| Kentucky | Boone County | No air monitoring |
| Kentucky | Bourbon County | No air monitoring |
| Kentucky | Boyd County | 8µg/m3 |
| 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 | No air monitoring |
| Kentucky | Butler County | No air monitoring |
| Kentucky | Caldwell County | No air monitoring |
| Kentucky | Calloway County | No air monitoring |
| Kentucky | Campbell County | 7.8µg/m3 |
| Kentucky | Carlisle County | No air monitoring |
| Kentucky | Carroll County | No air monitoring |
| Kentucky | Carter County | 6.2µg/m3 |
| Kentucky | Casey County | No air monitoring |
| Kentucky | Christian County | 9.2µg/m3 |
| 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 | 9µg/m3 |
| Kentucky | Edmonson County | No air monitoring |
| Kentucky | Elliott County | No air monitoring |
| Kentucky | Estill County | No air monitoring |
| Kentucky | Fayette County | 8.2µg/m3 |
| 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 | No air monitoring |
| Kentucky | Hancock County | No air monitoring |
| Kentucky | Hardin County | 7.9µg/m3 |
| 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 | 10.2µg/m3 |
| Kentucky | Jessamine County | No air monitoring |
| 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 | No air monitoring |
| Kentucky | Logan County | No air monitoring |
| Kentucky | Lyon County | No air monitoring |
| Kentucky | McCracken County | No air monitoring |
| 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 | No air monitoring |
| 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 | No air monitoring |
| Kentucky | Owen County | No air monitoring |
| Kentucky | Owsley County | No air monitoring |
| Kentucky | Pendleton County | No air monitoring |
| Kentucky | Perry County | 8µg/m3 |
| Kentucky | Pike County | 7.2µg/m3 |
| Kentucky | Powell County | No air monitoring |
| Kentucky | Pulaski County | 8µg/m3 |
| 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 | No air monitoring |
| 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 | 8.1µg/m3 |
| Kentucky | Washington County | No air monitoring |
| 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 | No air monitoring |
| 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 | No air monitoring |
| Louisiana | Caddo Parish | 9.6µg/m3 |
| Louisiana | Calcasieu Parish | 7.4µg/m3 |
| 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 | 8.5µg/m3 |
| 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 | 7.7µg/m3 |
| Louisiana | Jackson Parish | No air monitoring |
| Louisiana | Jefferson Parish | 7.7µg/m3 |
| Louisiana | Jefferson Davis Parish | No air monitoring |
| Louisiana | Lafayette Parish | 7.9µg/m3 |
| Louisiana | Lafourche Parish | No air monitoring |
| Louisiana | La Salle Parish | No air monitoring |
| Louisiana | Lincoln Parish | No air monitoring |
| Louisiana | Livingston Parish | No air monitoring |
| Louisiana | Madison Parish | No air monitoring |
| Louisiana | Morehouse Parish | No air monitoring |
| Louisiana | Natchitoches Parish | No air monitoring |
| Louisiana | Orleans Parish | 7.8µg/m3 |
| Louisiana | Ouachita Parish | 7.5µg/m3 |
| Louisiana | Plaquemines Parish | No air monitoring |
| Louisiana | Pointe Coupee Parish | No air monitoring |
| Louisiana | Rapides Parish | 7.4µg/m3 |
| Louisiana | Red River Parish | No air monitoring |
| Louisiana | Richland Parish | No air monitoring |
| Louisiana | Sabine Parish | No air monitoring |
| Louisiana | St. Bernard Parish | 8µg/m3 |
| Louisiana | St. Charles Parish | No air monitoring |
| Louisiana | St. Helena Parish | No air monitoring |
| Louisiana | St. James Parish | No air monitoring |
| Louisiana | St. John the Baptist Parish | No air monitoring |
| Louisiana | St. Landry Parish | No air monitoring |
| Louisiana | St. Martin Parish | No air monitoring |
| Louisiana | St. Mary Parish | No air monitoring |
| Louisiana | St. Tammany Parish | No air monitoring |
| Louisiana | Tangipahoa Parish | 7.5µg/m3 |
| Louisiana | Tensas Parish | No air monitoring |
| Louisiana | Terrebonne Parish | 7.2µg/m3 |
| 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 | 8.8µg/m3 |
| Louisiana | West Carroll Parish | No air monitoring |
| Louisiana | West Feliciana Parish | No air monitoring |
| Louisiana | Winn Parish | No air monitoring |
| Maine | Androscoggin County | 5.3µg/m3 |
| Maine | Aroostook County | 5.4µg/m3 |
| Maine | Cumberland County | 6.5µg/m3 |
| Maine | Franklin County | No air monitoring |
| Maine | Hancock County | 3.2µg/m3 |
| Maine | Kennebec County | 5.6µg/m3 |
| Maine | Knox County | No air monitoring |
| Maine | Lincoln County | No air monitoring |
| Maine | Oxford County | No air monitoring |
| Maine | Penobscot County | 4.5µg/m3 |
| 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 | No air monitoring |
| Maryland | Allegany County | No air monitoring |
| Maryland | Anne Arundel County | No air monitoring |
| Maryland | Baltimore County | 7.7µg/m3 |
| Maryland | Calvert County | No air monitoring |
| Maryland | Caroline County | No air monitoring |
| Maryland | Carroll County | No air monitoring |
| Maryland | Cecil County | 6.8µg/m3 |
| Maryland | Charles County | No air monitoring |
| Maryland | Dorchester County | 5.9µg/m3 |
| Maryland | Frederick County | No air monitoring |
| Maryland | Garrett County | 5.2µg/m3 |
| Maryland | Harford County | 6.7µg/m3 |
| Maryland | Howard County | 6.9µg/m3 |
| Maryland | Kent County | 5.5µg/m3 |
| Maryland | Montgomery County | 6.8µg/m3 |
| Maryland | Prince George's County | 5.9µg/m3 |
| 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 | 6.8µg/m3 |
| Maryland | Wicomico County | No air monitoring |
| Maryland | Worcester County | No air monitoring |
| Maryland | Baltimore city | No air monitoring |
| Massachusetts | Barnstable County | No air monitoring |
| Massachusetts | Berkshire County | 7.5µg/m3 |
| Massachusetts | Bristol County | 6.4µg/m3 |
| Massachusetts | Dukes County | No air monitoring |
| Massachusetts | Essex County | 6.3µg/m3 |
| Massachusetts | Franklin County | 7.8µg/m3 |
| Massachusetts | Hampden County | 6.5µg/m3 |
| Massachusetts | Hampshire County | 6.3µg/m3 |
| Massachusetts | Middlesex County | 6.6µg/m3 |
| Massachusetts | Nantucket County | No air monitoring |
| Massachusetts | Norfolk County | No air monitoring |
| Massachusetts | Plymouth County | 8.2µg/m3 |
| Massachusetts | Suffolk County | 7.9µg/m3 |
| Massachusetts | Worcester County | 8.6µg/m3 |
| Michigan | Alcona County | No air monitoring |
| Michigan | Alger County | No air monitoring |
| Michigan | Allegan County | 6.6µg/m3 |
| 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 | 5.8µg/m3 |
| Michigan | Benzie County | No air monitoring |
| Michigan | Berrien County | No air monitoring |
| Michigan | Branch County | No air monitoring |
| Michigan | Calhoun County | No air monitoring |
| Michigan | Cass County | No air monitoring |
| 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 | No air monitoring |
| 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 | 7.2µg/m3 |
| 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 | No air monitoring |
| Michigan | Ingham County | 8.5µg/m3 |
| 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 | 9.5µg/m3 |
| Michigan | Kalkaska County | No air monitoring |
| Michigan | Kent County | 9.2µg/m3 |
| 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 | 8.3µg/m3 |
| Michigan | Livingston County | No air monitoring |
| Michigan | Luce County | No air monitoring |
| Michigan | Mackinac County | No air monitoring |
| Michigan | Macomb County | 8.2µg/m3 |
| Michigan | Manistee County | No air monitoring |
| Michigan | Marquette County | No air monitoring |
| Michigan | Mason County | No air monitoring |
| Michigan | Mecosta County | No air monitoring |
| Michigan | Menominee County | No air monitoring |
| Michigan | Midland County | No air monitoring |
| Michigan | Missaukee County | 8.6µg/m3 |
| Michigan | Monroe County | No air monitoring |
| Michigan | Montcalm County | No air monitoring |
| Michigan | Montmorency County | No air monitoring |
| Michigan | Muskegon County | No air monitoring |
| Michigan | Newaygo County | No air monitoring |
| Michigan | Oakland County | 7.5µg/m3 |
| 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 | 8.8µg/m3 |
| Michigan | Presque Isle County | No air monitoring |
| Michigan | Roscommon County | No air monitoring |
| Michigan | Saginaw County | No air monitoring |
| Michigan | St. Clair County | 8.2µg/m3 |
| Michigan | St. Joseph County | No air monitoring |
| Michigan | Sanilac County | No air monitoring |
| Michigan | Schoolcraft County | No air monitoring |
| Michigan | Shiawassee County | No air monitoring |
| Michigan | Tuscola County | No air monitoring |