| United States |
| 7 | | | Washington State Department of Ecology 53 033 0047 |
| 95 | | | SJVAir.com 71944 |
| 0 | Belvidere: SW Olga Street, North Admiral, Seattle, King County, Washington, 98126, USA | | World Air Quality Index data feed | waqi seattle-01 |
| 115 | Big Pine: North Main Street, Big Pine, Inyo County, California, 93513, USA | | World Air Quality Index data feed | waqi bigpine-01 |
| 7 | Brewster: South 3rd Avenue, Brewster, Okanogan County, Washington, 98812, USA | | Washington State Department of Ecology 53 047 9990 |
| 2 | Burbank-Maple St: West Maple Street, Burbank, Walla Walla County, Washington, 99323, USA | | Washington State Department of Ecology 53 071 0006 |
| 9 | Cashmere: Foster Street, Cashmere, Chelan County, Washington, 98815, USA | | Washington State Department of Ecology aqs396 |
| 2 | Cathlamet: Cathlamet, Wahkiakum County, Washington, 98612, USA | | Washington State Department of Ecology 53 069 9990 |
| 89 | | | SJVAir.com 156617 |
| 15 | Cle Elum: Cle Elum, Kittitas County, Washington, 98922, USA | | Washington State Department of Ecology 53 037 0180 |
| 10 | Columbus, Ohio: Maize Road, North Linden, Columbus, Franklin County, Ohio, 43224, USA | | Public Parapsychology 173186 |
| 7 | | | Oregon Department of Environmental Quality (DEQ) 41 003 014 |
| 54 | Daleridge: Baptiste Way, La Canada Flintridge, Los Angeles County, California, 91011, USA | | Twoº & Rising 152046 |
| 8 | | | Oregon Department of Environmental Quality (DEQ) 41 053 0004 |
| 3 | Davenport: Logan Street, Davenport, Lincoln County, Washington, 99122, USA | | Washington State Department of Ecology 53 043 9990 |
| 2 | 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 |
| 114 | | | SEEN 73009 |
| 5 | | | Washington State Department of Ecology 53 007 9989 |
| 23 | Ellensburg-Discovery Hall: Central Washington University, 400, East University Way, Ellensburg, Kittitas County, Washington, 98926, USA | | Washington State Department of Ecology 53 037 9999 |
| 50 | | | Washington State Department of Ecology 53 037 9998 |
| 32 | | | Washington State Department of Ecology 53 037 9997 |
| 3 | Entiat: Kinzel Street, Entiat, Chelan County, Washington, 98822, USA | | Washington State Department of Ecology 53 007 9992 |
| 0 | Enumclaw-Mud Mtn.: Mud Mountain Road Southeast, Enumclaw, King County, Washington, 98022, USA | | Washington State Department of Ecology 53 033 0023 |
| 3 | Everett-12th St: 12th Street, Everett, Snohomish County, Washington, 98201, USA | | Washington State Department of Ecology aqs492 |
| 9 | | | Washington State Department of Ecology 53 061 0022 |
| 3 | | | Washington State Department of Ecology aqs466 |
| 106 | | | SEEN 87442 |
| 2 | | | Washington State Department of Ecology aqs497 |
| 2 | | | Washington State Department of Ecology 53 005 9999 |
| 6 | | | Washington State Department of Ecology aqs469 |
| 82 | Fremont (DUESD): Fremont Elementary School, Dover Place, Delano, Kern County, California, 93215, USA | | SJVAir.com 167377 |
| 1 | George: Washington Way North, Quincy, Grant County, Washington, 98824, USA | | Washington State Department of Ecology 53 025 9990 |
| 12 | | | Washington State Department of Ecology 53 039 9991 |
| 8 | | | AirNet - aiqcn.org - waqi.info 100363 |
| 43 | | | AirNet - aiqcn.org - waqi.info 100146 |
| 11 | Ilwaco: Brumbach Street, Ilwaco, Pacific County, Washington, 98624, USA | | Washington State Department of Ecology aqs501 |
| 2 | | | Washington State Department of Ecology 53 033 0010 |
| 7 | Kelso: Old Pacific Highway South, Kelso, Cowlitz County, Washington, 98626, USA | | Washington State Department of Ecology aqs494 |
| 3 | | | Washington State Department of Ecology 53 005 0003 |
| 103 | | | SJVAir.com 70027 |
| 0 | Magazine Beach Park: 1899 Olmstead Stone Bathhouse, Dr. Paul Dudley White Path, Riverside, Cambridgeport, Cambridge, Middlesex County, Massachusetts, 02139, USA | | Gaia realtime air quality monitoring network 383 |
| 1 | | | Washington State Department of Ecology 53 025 9999 |
| 8 | | | Oregon Department of Environmental Quality (DEQ) 41 071 1003 |
| 15 | Mill City: SW Evergreen Street, Mill City, Linn County, Oregon, 97360, USA | | Oregon Department of Environmental Quality (DEQ) 41 043 0104 |
| 84 | Morningside (DUESD): Morning Side Elementary School, White Oak Drive, Delano, Kern County, California, 93215, USA | | SJVAir.com 167403 |
| 15 | Mossyrock: Mossyrock Police, 231, East State Street, Mossyrock, Lewis County, Washington, 98564, USA | | Washington State Department of Ecology aqs498 |
| 0 | Mount Bachelor: West Village Lodge, Lava Flow, Bend, Deschutes County, Oregon, 97701, USA | | World Air Quality Index data feed | waqi mount-bachelor-01 |
| 23 | | | Washington State Department of Ecology 53 077 9998 |
| 16 | | | Washington State Department of Ecology 53 053 0012 |
| 6 | Newport-Calispel: West 1st Street, Newport, Pend Oreille County, Washington, 99156, USA | | Washington State Department of Ecology 53 051 0008 |
| 500 | PMS6003: Prospect Estates Court, Estes Park, Larimer County, Colorado, 80517, USA | | Gaia realtime air quality monitoring network 343 |
| 1 | Padilla Bay: Padilla Bay National Estuarine Research Reserve, Marihugh Road, Bay View, Skagit County, Washington, 98273, USA | | Washington State Department of Ecology 53 057 9990 |
| 22 | Pinetree Lane: Pinetree Lane, Northeast, Hollywood Park, Bexar County, Texas, 78232, USA | | Gaia realtime air quality monitoring network 630 |
| 84 | | | SJVAir.com 167381 |
| 0 | | | Washington State Department of Ecology 53 005 0004 |
| 3 | Puyallup-Pioneer Way E: Spinning Elementary School, 1306, East Pioneer, Puyallup, Pierce County, Washington, 98372, USA | | Washington State Department of Ecology 53 053 9999 |
| 3 | RBAC Rose Bowl Aquatics Center: Rose Bowl Aquatics Center, Arroyo Boulevard, Pasadena Council District 1, Pasadena, Los Angeles County, California, 91103, USA | | World Air Quality Index data feed | waqi rbac |
| 34 | Republic: North Clark Avenue, Republic, Ferry County, Washington, 99166, USA | | Washington State Department of Ecology 53 019 9990 |
| 19 | | | Oregon Department of Environmental Quality (DEQ) 41 019 0006 |
| 12 | | | Oregon Department of Environmental Quality (DEQ) 41 019 0005 |
| 1 | Royal City: Royal High School, Road 12 Southwest, Royal Camp, Grant County, Washington, 99357, USA | | Washington State Department of Ecology 53 025 9991 |
| 0 | SHADY PASS ROAD : Shady Pass Road, Chelan, Chelan County, Washington, 98816, USA | | Gaia realtime air quality monitoring network 640 |
| 7 | | | Oregon Department of Environmental Quality (DEQ) 41 047 0022 |
| 1 | SeaTac-Sunset Park: 18th Avenue South, Foster, Burien, King County, Washington, 98168, USA | | Washington State Department of Ecology aqs491 |
| 3 | Seattle-13th Ave S: Georgetown Steam Plant, 6505, 13th Avenue South, Van Asselt, Georgetown, Seattle, King County, Washington, 98108, USA | | Washington State Department of Ecology aqs505 |
| 3 | Seattle-16th Ave S: 16th Avenue South, Beacon Hill, Seattle, King County, Washington, 98144, USA | | Washington State Department of Ecology 53 033 9987 |
| 3 | Seattle-5th Ave S: 5th Avenue South, Georgetown, Seattle, King County, Washington, 98108, USA | | Washington State Department of Ecology aqs503 |
| 3 | | | Washington State Department of Ecology 53 033 9989 |
| 3 | Seattle-NE 127th St: NE 127th Street, Olympic Hills, Seattle, King County, Washington, 98125, USA | | Washington State Department of Ecology 53 033 9988 |
| 3 | | | Washington State Department of Ecology 53 033 9984 |
| 3 | | | Washington State Department of Ecology 53 025 0003 |
| 4 | | | Washington State Department of Ecology 53 063 9992 |
| 3 | | | Washington State Department of Ecology 53 063 9993 |
| 4 | | | Washington State Department of Ecology 53 063 9994 |
| 4 | Spokane-E Garland Ave: John A Shaw Middle School, North Lacey Street, Bemiss, Hillyard, Spokane, Spokane County, Washington, 99207, USA | | Washington State Department of Ecology 53 063 9987 |
| 5 | Spokane-E Joseph Ave: Garry Junior High School, East Central Avenue, Whitman, Hillyard, Spokane, Spokane County, Washington, 99208, USA | | Washington State Department of Ecology 53 063 9989 |
| -1 | | | Washington State Department of Ecology 53 063 0054 |
| 5 | | | Washington State Department of Ecology 53 063 9990 |
| 4 | Spokane-E Thurston Ave: Hamblen Elementary School, South Napa Street, Spokane, Spokane County, Washington, 99203, USA | | Washington State Department of Ecology 53 063 9985 |
| 3 | Spokane-Greenbluff: E Green Bluff Road, Green Bluff, Spokane County, Washington, 99005, USA | | Washington State Department of Ecology 53 063 0046 |