Air quality in Colorado
Air quality index (AQIāŗ) and PM2.5 air pollution in Colorado ā¢ 22:26, Oct 15
Colorado Department of Public Health & Environment (CDPHE)wyndham centerRuss StewartMatt MaccauxAaron BieberS ForestDilan WeerasingheLTom FullerGeorgeLynchCoalition for Clean Air (CCA)USA National Park ServicejohnCalifornia Air Resources Board (CARB)mckay&zuniE StationJSouthern Ute TribeUtah State University (USU)John SalzmanT HagemanSxSmithSteamboatairRed Pony FarmLu VenclBeyondAirRabbit Mountain Equestrian CenterTyWShawn VezzaniphshrcoJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Cheryl SwansonHaley Kline MurphyJCQHEPA Office of Atmospheric ProtectionRodeoJohn MannerAnonymousB BrennerMemorial Regional HealthEmily StonehamKay LewisKatie GirondaDDenAnonymous contributor
Colorado Department of Public Health & Environment (CDPHE)wyndham centerRuss StewartMatt MaccauxAaron BieberS ForestDilan WeerasingheLTom FullerGeorgeLynchCoalition for Clean Air (CCA)USA National Park ServicejohnCalifornia Air Resources Board (CARB)mckay&zuniE StationJSouthern Ute TribeUtah State University (USU)John SalzmanT HagemanSxSmithSteamboatairRed Pony FarmLu VenclBeyondAirRabbit Mountain Equestrian CenterTyWShawn VezzaniphshrcoJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Cheryl SwansonHaley Kline MurphyJCQHEPA Office of Atmospheric ProtectionRodeoJohn MannerAnonymousB BrennerMemorial Regional HealthEmily StonehamKay LewisKatie GirondaDDenAnonymous contributor
Live most polluted city ranking
Real-time Colorado most polluted city ranking
Wildfires in Colorado
Real-time information
Active fires
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Learn more about global air quality
Which is the most polluted city in Colorado?
- Applewood40
- Gunnison County40
- Evergreen39
- Archuleta38
- Colorado City38
- Grand County38
- El Paso37
- Fort Collins37
- La Plata County37
- Pueblo West37
- Welby37
- Black Hawk36
- Jefferson36
- Manitou Springs36
- Dolores County35
- Loveland35
- Timnath35
- Prowers34
- Aspen33
- Mesa33
- Rifle33
- Larimer32
- Logan County31
- Montezuma County30
- Shaw Heights30
- Derby29
- Edgewater29
- Four Square Mile29
- Northglenn29
- Parker29
- Sugar City29
- Cherry Creek28
- Mountain View28
- Pitkin County28
- Salida28
- Sheridan28
- Cortez27
- Costilla County27
- Fort Lupton27
- Brighton26
- Palisade26
- Twin Lakes, Adams County26
- Dakota Ridge25
- Genesee25
- Estes Park24
- Golden24
- Sherrelwood24
- Tabernash24
- Thornton24
- Ward24
- Laporte23
- Pueblo County23
- Redlands23
- Superior23
- Commerce City22
- Douglas22
- Estes Park town22
- Florence22
- Fruita22
- Glenwood Springs22
- Grand Junction22
- Highlands Ranch22
- Lyons22
- Moffat County22
- Niwot22
- Pueblo22
- Windsor22
- Bennett21
- Berthoud21
- Castle Rock21
- Center21
- Durango21
- Granby21
- Lafayette21
- Lake City21
- Lakewood21
- Paragon Estates21
- Wheat Ridge21
- Aurora20
- Basalt20
- Boulder20
- Craig20
- Denver20
- Fowler20
- Orchard Mesa20
- Park County20
- Summit20
- Wellington20
- Boulder County19
- Castle Pines Village19
- Cedaredge19
- Conejos19
- Copper Mountain19
- Delta19
- Eagle County19
- Inverness19
- Julesburg19
- La Junta19
- Longmont19
- Louisville19
- Routt County19
- Silt19
- Teller19
- Trail Side19
- Upper Bear Creek19
- Buena Vista18
- Centennial18
- Colorado Springs18
- Eldorado Springs18
- Greenwood Village18
- Gunbarrel18
- Gunnison18
- Lazy Acres18
- Leadville18
- Mineral18
- Palmer Lake18
- Poncha Springs18
- Red Feather Lakes18
- Saguache18
- Snowmass Village18
- Sterling Ranch18
- Weld18
- Aguilar17
- Arvada17
- Bayfield17
- Black Forest17
- Broomfield17
- CaƱon City17
- Castle Pines17
- Chaffee County17
- Clifton17
- Englewood17
- Otero County17
- Steamboat Springs17
- Swink17
- Telluride17
- Westcliffe17
- Winter Park17
- Woodland Park17
- Altona16
- Arapahoe County16
- Delta County16
- Edwards16
- El Jebel16
- Hot Sulphur Springs16
- Idaho Springs16
- Ignacio16
- Manzanola16
- Oak Creek16
- Rocky Ford16
- Silverton16
- Westminster16
- Green Mountain Falls15
- Littleton15
- Olney Springs15
- Trinidad15
- Alamosa County14
- Avon14
- Crowley14
- Dolores14
- Garfield County14
- Nathrop14
- Towaoc14
- Vail14
- Breckenridge13
- Burlington13
- Elbert County13
- Greeley13
- Keystone13
- Lamar13
- Mancos13
- Platteville13
- Silverthorne13
- Acres Green12
- Air Force Academy12
- Aristocrat Ranchettes12
- Berkley12
- Brookside12
- Central12
- Cherry Hills Village12
- Cimarron Hills12
- Clear Creek County12
- Columbine12
- Columbine Valley12
- Cripple Creek12
- Dacono12
- Dove Valley12
- Fairmount12
- Federal Heights12
- Firestone12
- Florissant12
- Fort Carson12
- Fountain12
- Georgetown12
- Gilcrest12
- Gleneagle12
- Holly Hills12
- Indian Hills12
- Kittredge12
- Lincoln Park12
- Lochbuie12
- Loma12
- Lone Tree12
- Louviers12
- Mead12
- Meridian12
- Meridian Village12
- Milliken12
- Monument12
- Nederland12
- Penrose12
- Perry Park12
- Ponderosa Park12
- Rangely12
- Rio Blanco12
- Security-Widefield12
- Sedalia12
- Severance12
- Stonegate12
- The Pinery12
- Todd Creek12
- Valmont12
- West Pleasant View12
- Woodmoor12
- Alamosa11
- Evans11
- Hugo11
- Montrose11
- Pagosa Springs11
- Parachute11
- Battlement Mesa10
- Cascade-Chipita Park10
- Fraser10
- Fruitvale10
- Beulah Valley9
- Eaton9
- Hudson9
- Kiowa9
- La Salle9
- Watkins9
- Akron8
- Alamosa East8
- Alma8
- Ault8
- Brush8
- Byers8
- Carbondale8
- Cattle Creek8
- Collbran8
- Crested Butte8
- Crestone8
- Crook8
- Custer County8
- Del Norte8
- Dillon8
- Dove Creek8
- Eagle8
- Ellicott8
- Erie8
- Fairplay8
- Fort Morgan8
- Frisco8
- Garfield8
- Grover8
- Gypsum8
- Holyoke8
- Keenesburg8
- Kersey8
- Kremmling8
- Leadville North8
- Maysville8
- Minturn8
- Monte Vista8
- Montrose County8
- Mount Crested Butte8
- New Castle8
- Olathe8
- Orchard City8
- Ouray8
- Ouray County8
- Saguache County8
- San Luis8
- Sterling8
- Strasburg8
- Walsenburg8
- Wolcott8
- Wray8
- Yuma8
- San Miguel County7
- Bethune6
- Cheraw6
- Cheyenne Wells6
- Eads6
- Hayden6
- Kit Carson County6
- Las Animas6
- Limon6
- Mountain Village6
- Ordway6
- Paonia6
- Roxborough Park6
- Springfield6
- Walden6
- Wiley6
- Ken Caryl4
- Baca County3
- Walsh2
- Lakeside1
- Aetna Estates0
- Aspen Park0
- Coal Creek, Jefferson County0
- Frederick0
- Glendale, Arapahoe County0
- Lake0
- Stratmoor0
