| United States |
| 15 | | | Northside Fort Worth Air 160773 |
| 0 | | | SEEN 73066 |
| 36 | | | Washington State Department of Ecology 53 033 0047 |
| 6 | | | SJVAir.com 71944 |
| 17 | Bayside, Wisconsin: Bayside Middle School, 601, East Ellsworth Lane, Milwaukee River Parkway, Bayside, Milwaukee County, Wisconsin, 53217, USA | | Wisconsin Department Of Natural Resources 55 079 0085 |
| 15 | | | Wisconsin Department Of Natural Resources 55 105 0030 |
| 76 | Brewster: South 3rd Avenue, Brewster, Okanogan County, Washington, 98812, USA | | Washington State Department of Ecology 53 047 9990 |
| 21 | Brushy Creek Massai: Brushy Creek Road, Oak Brook, Cedar Park, Williamson County, Texas, 78613, USA | | AirNet - aiqcn.org - waqi.info 100275 |
| 75 | Burbank-Maple St: West Maple Street, Burbank, Walla Walla County, Washington, 99323, USA | | Washington State Department of Ecology 53 071 0006 |
| 65 | Cashmere: Foster Street, Cashmere, Chelan County, Washington, 98815, USA | | Washington State Department of Ecology aqs396 |
| 8 | Cathlamet: Cathlamet, Wahkiakum County, Washington, 98612, USA | | Washington State Department of Ecology 53 069 9990 |
| 84 | Cle Elum: Cle Elum, Kittitas County, Washington, 98922, USA | | Washington State Department of Ecology 53 037 0180 |
| 15 | | | Wisconsin Department Of Natural Resources 55 021 0015 |
| 87 | Davenport: Logan Street, Davenport, Lincoln County, Washington, 99122, USA | | Washington State Department of Ecology aqs388 |
| 27 | 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 |
| 2 | | | SEEN 73009 |
| 15 | | | Walter Gregg 80519 |
| 22 | Dry Fork Grogu: Reprise Cove, Round Rock, Williamson County, Texas, 78681, USA | | AirNet - aiqcn.org - waqi.info 100290 |
| 70 | | | Washington State Department of Ecology 53 007 9989 |
| 16 | | | Wisconsin Department Of Natural Resources 55 127 0006 |
| 76 | Ellensburg-Discovery Hall: Central Washington University, 400, East University Way, Ellensburg, Kittitas County, Washington, 98926, USA | | Washington State Department of Ecology 53 037 9999 |
| 60 | | | Washington State Department of Ecology 53 037 9998 |
| 86 | | | Washington State Department of Ecology 53 037 9997 |
| 67 | Entiat: Kinzel Street, Entiat, Chelan County, Washington, 98822, USA | | Washington State Department of Ecology 53 007 9992 |
| 19 | Enumclaw-Mud Mtn.: Mud Mountain Road Southeast, Enumclaw, King County, Washington, 98022, USA | | Washington State Department of Ecology 53 033 0023 |
| 20 | Everett-12th St: 12th Street, Everett, Snohomish County, Washington, 98201, USA | | Washington State Department of Ecology aqs492 |
| 24 | | | Washington State Department of Ecology 53 061 0022 |
| 28 | | | Washington State Department of Ecology aqs466 |
| 5 | | | SEEN 87442 |
| 26 | | | Washington State Department of Ecology aqs497 |
| 114 | | | Washington State Department of Ecology 53 005 9999 |
| 17 | | | Wisconsin Department Of Natural Resources 55 039 0006 |
| 17 | | | Washington State Department of Ecology aqs469 |
| 72 | George: Washington Way North, Quincy, Grant County, Washington, 98824, USA | | Washington State Department of Ecology 53 025 9990 |
| 33 | | | Washington State Department of Ecology 53 039 9991 |
| 17 | | | Wisconsin Department Of Natural Resources 55 089 0008 |
| 16 | | | Wisconsin Department Of Natural Resources 55 009 0026 |
| 20 | | | AirNet - aiqcn.org - waqi.info 100363 |
| 28 | | | Wisconsin Department Of Natural Resources 55 053 2002 |
| 28 | | | Wisconsin Department Of Natural Resources 55 081 2001 |
| 15 | Ilwaco: Brumbach Street, Ilwaco, Pacific County, Washington, 98624, USA | | Washington State Department of Ecology aqs501 |
| 31 | | | Washington State Department of Ecology 53 033 0010 |
| 16 | | | Wisconsin Department Of Natural Resources 55 055 0009 |
| 8 | Kelso: Old Pacific Highway South, Kelso, Cowlitz County, Washington, 98626, USA | | Washington State Department of Ecology aqs494 |
| 124 | | | Washington State Department of Ecology 53 005 0003 |
| 17 | | | Wisconsin Department Of Natural Resources 55 059 0025 |
| 18 | | | Wisconsin Department Of Natural Resources 55 061 0002 |
| 24 | | | Wisconsin Department Of Natural Resources 55 073 0012 |
| 31 | | | SJVAir.com 70027 |
| 20 | | | SJVAir.com 67117 |
| 37 | | | SJVAir.com 70023 |
| 17 | | | Wisconsin Department Of Natural Resources 55 071 0007 |
| 92 | | | Washington State Department of Ecology 53 025 9999 |
| 18 | | | Wisconsin Department Of Natural Resources 55 079 0068 |
| 16 | Mossyrock: Mossyrock Police, 231, East State Street, Mossyrock, Lewis County, Washington, 98564, USA | | Washington State Department of Ecology aqs498 |
| 96 | | | Washington State Department of Ecology 53 077 9998 |
| 57 | | | Washington State Department of Ecology 53 053 0012 |
| 20 | Newport, Wisconsin: Service Building, Newport Park Road, Town of Liberty Grove, Door County, Wisconsin, 54210, USA | | Wisconsin Department Of Natural Resources 55 029 0004 |
| 90 | Newport-Calispel: West 1st Street, Newport, Pend Oreille County, Washington, 99156, USA | | Washington State Department of Ecology 53 051 0008 |
| 13 | | | SEEN 62065 |
| 23 | 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 |
| 10 | Pioneer (DUESD): Camino Real Drive, Delano, Kern County, California, 93215, USA | | SJVAir.com 167385 |
| 56 | | | Washington State Department of Ecology aqs272 |
| 26 | Puyallup-Pioneer Way E: Spinning Elementary School, 1306, East Pioneer, Puyallup, Pierce County, Washington, 98372, USA | | Washington State Department of Ecology 53 053 9999 |
| 119 | Republic: North Clark Avenue, Republic, Ferry County, Washington, 99166, USA | | Washington State Department of Ecology 53 019 9990 |
| 82 | Royal City: Royal High School, Road 12 Southwest, Royal Camp, Grant County, Washington, 99357, USA | | Washington State Department of Ecology 53 025 9991 |
| 0 | | | SJVAir.com 79319 |
| 10 | SJVAir-1254: Waterford Way, Los Banos, Merced County, California, 93635, USA | | SJVAir.com 167354 |
| 10 | SJVAir-8d48: North Mercey Springs Road, Los Banos, Merced County, California, 93635, USA | | SJVAir.com 167351 |
| 17 | SeaTac-Sunset Park: 18th Avenue South, Foster, Burien, King County, Washington, 98168, USA | | Washington State Department of Ecology aqs491 |
| 30 | 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 |
| 33 | Seattle-16th Ave S: 16th Avenue South, Beacon Hill, Seattle, King County, Washington, 98144, USA | | Washington State Department of Ecology 53 033 9987 |
| 29 | Seattle-23rd Ave SW: 23rd Avenue SW, North Delridge, Seattle, King County, Washington, 98106, USA | | Washington State Department of Ecology 53 033 9993 |
| 33 | Seattle-5th Ave S: 5th Avenue South, Georgetown, Seattle, King County, Washington, 98108, USA | | Washington State Department of Ecology aqs503 |
| 24 | | | Washington State Department of Ecology 53 033 9989 |
| 23 | Seattle-Linden Ave N: Linden Avenue North, Bitter Lake, Seattle, King County, Washington, 98133, USA | | Washington State Department of Ecology 53 033 9985 |
| 25 | Seattle-NE 127th St: NE 127th Street, Olympic Hills, Seattle, King County, Washington, 98125, USA | | Washington State Department of Ecology 53 033 9988 |
| 26 | | | Washington State Department of Ecology 53 033 9984 |
| 5 | | | SJVAir.com 79327 |
| 16 | | | Wisconsin Department Of Natural Resources 55 117 0009 |