Air quality in Colorado
Air quality index (AQIāŗ) and PM2.5 air pollution in Colorado ⢠09:55, Nov 12
Colorado Department of Public Health & Environment (CDPHE)wyndham centerRuss StewartMatt MaccauxAaron BieberS ForestDilan WeerasingheLTom FullerCoalition for Clean Air (CCA)GeorgeLynchUSA National Park ServicejohnCalifornia Air Resources Board (CARB)mckay&zuniSharksWithLazersE StationUtah State University (USU)Southern Ute TribeJohn SalzmanT HagemanSxSmithairSteamboatRed Pony FarmLu VenclRabbit Mountain Equestrian CenterTyWphshrcoShawn VezzaniJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Haley Kline MurphyCheryl SwansonQHJCEPA Office of Atmospheric ProtectionJohn MannerRodeoB BrennerMemorial Regional HealthAnonymousEmily StonehamKay LewisKatie GirondaEd KDDenAnonymous contributor
Colorado Department of Public Health & Environment (CDPHE)wyndham centerRuss StewartMatt MaccauxAaron BieberS ForestDilan WeerasingheLTom FullerCoalition for Clean Air (CCA)GeorgeLynchUSA National Park ServicejohnCalifornia Air Resources Board (CARB)mckay&zuniSharksWithLazersE StationUtah State University (USU)Southern Ute TribeJohn SalzmanT HagemanSxSmithairSteamboatRed Pony FarmLu VenclRabbit Mountain Equestrian CenterTyWphshrcoShawn VezzaniJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Haley Kline MurphyCheryl SwansonQHJCEPA Office of Atmospheric ProtectionJohn MannerRodeoB BrennerMemorial Regional HealthAnonymousEmily StonehamKay LewisKatie GirondaEd KDDenAnonymous contributor
Live most polluted city ranking
Real-time Colorado most polluted city ranking
Wildfires in Colorado
Real-time informationActive fires
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Learn more about global air quality
Which is the most polluted city in Colorado?
- Commerce City56
- Shaw Heights52
- Grand County47
- Gunnison County46
- Northglenn46
- Black Hawk45
- Douglas45
- El Paso45
- Evergreen45
- Loveland45
- Manitou Springs45
- Centennial44
- Fort Collins44
- Larimer44
- Weld44
- La Plata County43
- Greeley42
- Logan County42
- Jefferson41
- Aspen39
- Montezuma County39
- Timnath39
- Trinidad39
- Boulder38
- Pueblo West37
- Sugar City37
- Costilla County36
- Mesa36
- Welby36
- Dolores County35
- Cortez34
- Prowers34
- Berthoud33
- Longmont33
- Rifle33
- Thornton33
- Denver32
- Lazy Acres32
- Swink32
- Twin Lakes, Adams County32
- Florence31
- Lafayette31
- Palisade31
- Sherrelwood31
- Colorado City30
- Golden30
- Lake City30
- Tabernash30
- Applewood29
- Center29
- Fort Lupton29
- La Junta29
- Mountain View29
- Parker29
- Pitkin County29
- Salida29
- Silverton29
- Westminster29
- Windsor29
- CaƱon City28
- Estes Park town28
- Lakewood28
- Lyons28
- Paragon Estates28
- Park County28
- Superior28
- Trail Side28
- Wellington28
- Altona27
- Arvada27
- Aurora27
- Boulder County27
- Buena Vista27
- Chaffee County27
- Cherry Creek27
- Dakota Ridge27
- Delta County27
- Erie27
- Estes Park27
- Genesee27
- Gold Hill27
- Green Mountain Falls27
- Gunbarrel27
- Highlands Ranch27
- Idaho Springs27
- Keenesburg27
- Platteville27
- Poncha Springs27
- Redlands27
- Summit27
- Vail27
- Archuleta26
- Burlington26
- Conejos26
- Delta26
- Durango26
- Eagle County26
- Eldorado Springs26
- Fowler26
- Fruitvale26
- Grand Junction26
- Hudson26
- Inverness26
- Leadville26
- Louisville26
- Montrose26
- Nathrop26
- Orchard Mesa26
- Palmer Lake26
- Strasburg26
- Teller26
- Telluride26
- Upper Bear Creek26
- Westcliffe26
- Alamosa25
- Basalt25
- Black Forest25
- Broomfield25
- Byers25
- Craig25
- Dolores25
- Granby25
- Gunnison25
- Moffat County25
- Snowmass Village25
- Alamosa County24
- Arapahoe County24
- Castle Pines24
- Castle Rock24
- Cedaredge24
- Colorado Springs24
- Derby24
- Edgewater24
- Four Square Mile24
- Fruita24
- Glenwood Springs24
- Ignacio24
- Littleton24
- Lochbuie24
- Mancos24
- Pueblo24
- Red Feather Lakes24
- Saguache24
- Watkins24
- Aristocrat Ranchettes23
- Cascade-Chipita Park23
- Castle Pines Village23
- Elbert County23
- Hugo23
- Otero County23
- Rocky Ford23
- San Luis23
- Sheridan23
- Sterling Ranch23
- Todd Creek23
- Towaoc23
- Avon22
- Bayfield22
- Breckenridge22
- El Jebel22
- Manzanola22
- Pagosa Springs22
- Routt County22
- Winter Park22
- Bennett21
- Brighton21
- Edwards21
- Fort Morgan21
- Garfield County21
- Julesburg21
- La Salle21
- Orchard City21
- Paonia21
- Pueblo County21
- Silverthorne21
- Ward21
- Alamosa East20
- Baca County20
- Crowley20
- Dacono20
- Gilcrest20
- Hot Sulphur Springs20
- Kersey20
- Oak Creek20
- Walsenburg20
- Walsh20
- Battlement Mesa19
- Brush19
- Collbran19
- Dove Valley19
- Evans19
- Firestone19
- Kiowa19
- Olathe19
- Ouray19
- Parachute19
- Steamboat Springs19
- Stonegate19
- Acres Green18
- Berkley18
- Cherry Hills Village18
- Federal Heights18
- Holly Hills18
- Lone Tree18
- Mead18
- Meridian18
- Meridian Village18
- Milliken18
- Ponderosa Park18
- Wheat Ridge18
- Aguilar17
- Akron17
- Beulah Valley17
- Clifton17
- Eaton17
- Lakeside17
- Loma17
- The Pinery17
- Cattle Creek16
- Columbine Valley16
- Dove Creek16
- Ellicott16
- Gypsum16
- Hayden16
- Limon16
- Monte Vista16
- Montrose County16
- New Castle16
- Rangely16
- Rio Blanco16
- San Miguel County16
- Ault15
- Columbine15
- Custer County15
- Eagle15
- Fairmount15
- Keystone15
- Louviers15
- Niwot15
- Ordway15
- Sedalia15
- Cimarron Hills14
- Crested Butte14
- Crestone14
- Greenwood Village14
- Lamar14
- Mineral14
- Mount Crested Butte14
- Olney Springs14
- Severance14
- Valmont14
- Wolcott14
- Woodmoor14
- Air Force Academy13
- Brookside13
- Cheraw13
- Del Norte13
- Fairplay13
- Fort Carson13
- Fountain13
- Frisco13
- Gleneagle13
- Kremmling13
- Las Animas13
- Leadville North13
- Lincoln Park13
- Minturn13
- Monument13
- Penrose13
- Perry Park13
- Security-Widefield13
- Silt13
- Sterling13
- Yuma13
- Aspen Park12
- Bethune12
- Central12
- Cheyenne Wells12
- Clear Creek County12
- Cripple Creek12
- Dillon12
- Eads12
- Florissant12
- Garfield12
- Georgetown12
- Indian Hills12
- Kittredge12
- Maysville12
- Mountain Village12
- Ouray County12
- Saguache County12
- Springfield12
- Walden12
- Wiley12
- Wray12
- Englewood11
- Fraser11
- Grover11
- Nederland11
- Laporte10
- Holyoke9
- Crook8
- Frederick6
- Coal Creek, Jefferson County2
- Aetna Estates0
- Alma0
- Carbondale0
- Glendale, Arapahoe County0
- Ken Caryl0
- Kit Carson County0
- Lake0
- Roxborough Park0
- Stratmoor0
- Woodland Park0









