| United States |
| 4 | : Reno County, Kansas, USA | | Citizen Science project sensor.community 58460 |
| 33 | | | Northside Fort Worth Air 85594 |
| 7 | 19th Street: 19th Street, Windsor Terrace, Brooklyn, New York, Kings County, New York, 11218, USA | | Citizen Science project sensor.community 96399 |
| 0 | | | Northside Fort Worth Air 160773 |
| 0 | AARO: Raven Court, Rodeo, Hidalgo County, New Mexico, 88056, USA | | Astronomy Acres Remote Observatories 156764 |
| 50 | | | Ciencia ciudadana por la Calidad del Aire 50db59 |
| 138 | Albany Park (DUESD): Albany Park School, Clark Street, Delano, Kern County, California, 93215, USA | | SJVAir.com 167379 |
| 70 | | | SEEN 73066 |
| 131 | | | SEEN 73885 |
| 60 | | | Gaia realtime air quality monitoring network 866 |
| 11 | | | Citizen Science project sensor.community 19621 |
| 5 | Auburn St: Auburn St, Concord, Merrimack County, New Hampshire, 03301, USA | | Citizen Science project sensor.community 28750 |
| 8 | | | Washington State Department of Ecology 53 033 0047 |
| 55 | | | SJVAir.com 71944 |
| 34 | | | SJVAir.com 79326 |
| 0 | Bay Parkway: Saint Athanasius School, Bay Parkway, New Utrecht, Brooklyn, Kings County, New York, New York, 11204, USA | | Citizen Science project sensor.community 96401 |
| 17 | Beechtree Lane: Beechtree Lane, Middletown, Frederick County, Maryland, 21769, USA | | Citizen Science project sensor.community 65012 |
| 141 | Breckenridge: Breckenridge, Core City, Detroit, Wayne County, Michigan, 48208, USA | | AirNet - aiqcn.org - waqi.info 100360 |
| 20 | Brewster: South 3rd Avenue, Brewster, Okanogan County, Washington, 98812, USA | | Washington State Department of Ecology aqs397 |
| 4 | Briar Ridge Drive: Briar Ridge Drive, Castro Valley, Alameda County, California, 94552, USA | | Gaia realtime air quality monitoring network 670 |
| 17 | Brink Rd: Brink Rd, Germantown, Montgomery County, Maryland, 20882, USA | | Citizen Science project sensor.community 48249 |
| 3 | | | Citizen Science project sensor.community 82255 |
| 70 | Brushy Creek Massai: Brushy Creek Road, Oak Brook, Cedar Park, Williamson County, Texas, 78613, USA | | AirNet - aiqcn.org - waqi.info 100275 |
| 32 | Bulverde Hills: Sierra Vista Drive, Bulverde, Comal County, Texas, 78163, USA | | Weather Link 738519 |
| 3 | Burbank-Maple St: West Maple Street, Burbank, Walla Walla County, Washington, 99323, USA | | Washington State Department of Ecology 53 071 0006 |
| 11 | Cashmere: Foster Street, Cashmere, Chelan County, Washington, 98815, USA | | Washington State Department of Ecology aqs396 |
| 14 | Cathlamet: Cathlamet, Wahkiakum County, Washington, 98612, USA | | Washington State Department of Ecology aqs393 |
| 131 | Cecil Ave (DUESD): Cecil Avenue Junior High School, 13th Avenue, Delano, Kern County, California, 93215, USA | | SJVAir.com 167404 |
| 143 | | | SJVAir.com 156617 |
| 4 | Center St: Center St, Castro Valley, Alameda County, California, 94546, USA | | Citizen Science project sensor.community 51052 |
| 1 | Chiswell Road: Chiswell Road, Grafton, Worcester County, Massachusetts, 01536, USA | | Citizen Science project sensor.community 87877 |
| 0 | Cle Elum: Cle Elum, Kittitas County, Washington, 98922, USA | | Washington State Department of Ecology aqs395 |
| 0 | Columbia Street: Columbia Street, Columbia Street Waterfront, Brooklyn, New York, Kings County, New York, 11231, USA | | Gaia realtime air quality monitoring network 903 |
| 0 | | | Citizen Science project sensor.community 95841 |
| 8 | Corry Street: Corry Street, Schenk-Atwood-Starkweather-Yahara, Madison, Dane County, Wisconsin, 53704, USA | | Citizen Science project sensor.community 88102 |
| 0 | Crescent St: Crescent St, Denton, Denton County, Texas, 76201, USA | | Citizen Science project sensor.community 17739 |
| 38 | Cress Parkway: Cress Parkway, Hiawatha, Linn County, Iowa, 52233, USA | | Citizen Science project sensor.community 93254 |
| 0 | | | Gaia realtime air quality monitoring network 945 |
| 131 | DA GOAT: Northridge Road, Porter Ranch, Los Angeles City Council District 12, Los Angeles, Los Angeles County, California, 91311, USA | | Ambient Weather Network ws5001-01 |
| 22 | Daleridge: Baptiste Way, La Canada Flintridge, Los Angeles County, California, 91011, USA | | Twoº & Rising 152046 |
| 13 | Darby Road: Darby Road, Anchorage, Anchorage, Alaska, 99577, USA | | Citizen Science project sensor.community 60266 |
| 2 | Davenport: Logan Street, Davenport, Lincoln County, Washington, 99122, USA | | Washington State Department of Ecology 53 043 9990 |
| 129 | | | SJVAir.com 167372 |
| 6 | Des Moines-S 240th St: Bldg 8 Student Union, 2400, South 240th Street, Des Moines, King County, Washington, 98198, USA | | Washington State Department of Ecology aqs468 |
| 33 | Dolorosa: Dolorosa, Market Square District, San Antonio, Bexar County, Texas, 78204, USA | | Citizen Science project sensor.community 77515 |
| 4 | Dominion Drive: Dominion Drive, East Side, Madison, Dane County, Wisconsin, 53718, USA | | Citizen Science project sensor.community 78368 |
| 61 | | | SEEN 73009 |
| 0 | | | Walter Gregg 80519 |
| 39 | Downtownish Lynchburg: Monument Terrace, Church Street, Court House Hill, Lynchburg, Virginia, 24504, USA | | Gaia realtime air quality monitoring network 743 |
| 70 | Dry Fork Grogu: Reprise Cove, Round Rock, Williamson County, Texas, 78681, USA | | AirNet - aiqcn.org - waqi.info 100290 |
| 0 | | | Citizen Science project sensor.community 83626 |
| 9 | | | Washington State Department of Ecology 53 007 9989 |
| 34 | | | Gaia realtime air quality monitoring network 751 |
| 9 | Ellensburg-Discovery Hall: Central Washington University, 400, East University Way, Ellensburg, Kittitas County, Washington, 98926, USA | | Washington State Department of Ecology 53 037 9999 |
| 61 | | | Washington State Department of Ecology 53 037 9998 |
| 22 | | | Washington State Department of Ecology 53 037 9997 |
| 15 | Emperor Norden: 38th Avenue, Outer Sunset, San Francisco, San Francisco County, California, 94121, USA | | Gaia realtime air quality monitoring network 491 |
| 8 | Entiat: Kinzel Street, Entiat, Chelan County, Washington, 98822, USA | | Washington State Department of Ecology aqs493 |
| 2 | Enumclaw-Mud Mtn.: Mud Mountain Road Southeast, Enumclaw, King County, Washington, 98022, USA | | Washington State Department of Ecology 53 033 0023 |
| 18 | Everett-12th St: 12th Street, Everett, Snohomish County, Washington, 98201, USA | | Washington State Department of Ecology aqs492 |
| 42 | | | Washington State Department of Ecology 53 061 0022 |
| 17 | | | Washington State Department of Ecology aqs466 |
| 88 | | | SEEN 87442 |
| 94 | | | SEEN 87131 |
| 17 | Fairmont Ave: Fairmont Ave, Downers Grove Township, DuPage County, Illinois, 60516, USA | | Citizen Science project sensor.community 45990 |
| 5 | | | Washington State Department of Ecology aqs497 |
| 3 | | | Washington State Department of Ecology aqs436 |
| 42 | | | Washington State Department of Ecology aqs469 |
| 139 | Fremont (DUESD): Fremont Elementary School, Dover Place, Delano, Kern County, California, 93215, USA | | SJVAir.com 167377 |
| 116 | Fresno-Garland: North First Street, Fresno, Fresno County, California, 93726, USA | | SJVAir.com 167393 |
| 2 | George: Washington Way North, Quincy, Grant County, Washington, 98824, USA | | Washington State Department of Ecology 53 025 9990 |
| 7 | | | Washington State Department of Ecology aqs434 |
| -1 | Grice Court: Antelope, Placer County, California, 95747, USA | | Citizen Science project sensor.community 64966 |
| 17 | Grove Acre Avenue: Grove Acre Avenue, Pacific Grove, Monterey County, California, 93950, USA | | Citizen Science project sensor.community 82637 |
| 112 | HATCH Workshop: S Union Street, Stockton, San Joaquin County, California, 95205, USA | | HATCH Workshop 156003 |
| 8 | Hamilton Ave: Hamilton Ave, Mountain View, Santa Clara County, California, 94043, USA | | Citizen Science project sensor.community 19975 |
| 74 | Hanes: Meadowbridge Drive, Lutz, Hillsborough County, Florida, 33549, USA | | Gaia realtime air quality monitoring network 967 |
| 4 | | | AirNet - aiqcn.org - waqi.info 100363 |
| 138 | | | SJVAir.com 167380 |
| -1 | Hawkins Road: Hawkins Road, Winlock, Lewis County, Washington, 98596, USA | | Citizen Science project sensor.community 81998 |