Air quality in Colorado
Air quality index (AQI⁺) and PM2.5 air pollution in Colorado • 20:57, Oct 14
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&zuniSharksWithLazersE 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 GirondaEd KDDenAnonymous 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&zuniSharksWithLazersE 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 GirondaEd KDDenAnonymous 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?
- Brighton49
- Platteville42
- Prowers41
- Fort Lupton37
- Thornton37
- Bennett36
- Commerce City34
- Frederick34
- La Plata County34
- Montezuma County34
- Lake City33
- Sheridan33
- Derby32
- Four Square Mile32
- Mesa32
- Roxborough Park31
- Grand County30
- Mountain View29
- Englewood28
- Laporte28
- Twin Lakes, Adams County28
- Colorado City27
- Cortez27
- Kit Carson County27
- Northglenn27
- Black Hawk26
- Clifton26
- Trail Side26
- Evergreen25
- Carbondale24
- Littleton24
- Monument24
- Steamboat Springs24
- Westminster24
- Woodland Park24
- Aspen23
- Broomfield23
- Denver23
- Greeley23
- Greenwood Village23
- Shaw Heights23
- Wheat Ridge23
- Aurora22
- Boulder22
- Edgewater22
- Florence22
- Gunnison County22
- Parker22
- Welby22
- Windsor22
- Cherry Creek21
- Pueblo21
- Rifle21
- Dolores County20
- Archuleta19
- Boulder County19
- Loveland19
- Moffat County19
- Pueblo West19
- Snowmass Village18
- Berthoud17
- Cañon City17
- Centennial17
- Sherrelwood17
- Sterling Ranch17
- Dakota Ridge16
- Douglas16
- Lakewood16
- Niwot16
- El Paso15
- Highlands Ranch15
- Manitou Springs15
- Mancos14
- Redlands14
- Lafayette13
- Silt13
- Timnath13
- Weld13
- Acres Green12
- Aristocrat Ranchettes12
- Berkley12
- Cherry Hills Village12
- Columbine12
- Columbine Valley12
- Dacono12
- Dove Valley12
- Federal Heights12
- Firestone12
- Fort Collins12
- Holly Hills12
- Hudson12
- Keenesburg12
- Keystone12
- Larimer12
- Lochbuie12
- Lone Tree12
- Longmont12
- Louviers12
- Mead12
- Meridian12
- Meridian Village12
- Paragon Estates12
- Sedalia12
- Silverton12
- Stonegate12
- Todd Creek12
- Watkins12
- Baca County11
- Buena Vista11
- Center11
- Costilla County11
- Evans11
- Fairmount11
- Gilcrest11
- Indian Hills11
- Kersey11
- Kittredge11
- La Salle11
- Lamar11
- Louisville11
- Milliken11
- The Pinery11
- Valmont11
- Alamosa10
- Arapahoe County10
- Colorado Springs10
- Erie10
- Julesburg10
- Salida10
- Ault9
- Castle Rock9
- Eaton9
- Gunbarrel9
- Jefferson9
- Perry Park9
- Ponderosa Park9
- Severance9
- Altona8
- Byers8
- Central8
- Chaffee County8
- Hugo8
- Kiowa8
- Nathrop8
- Strasburg8
- Sugar City8
- Superior8
- West Pleasant View8
- Woodmoor8
- Air Force Academy7
- Applewood7
- Basalt7
- Breckenridge7
- Elbert County7
- Estes Park town7
- Genesee7
- Gleneagle7
- Holyoke7
- Lakeside7
- Olney Springs7
- Pueblo County7
- Saguache7
- Winter Park7
- Wray7
- Akron6
- Alamosa County6
- Alamosa East6
- Alma6
- Arvada6
- Battlement Mesa6
- Bethune6
- Beulah Valley6
- Brookside6
- Brush6
- Burlington6
- Cattle Creek6
- Cheraw6
- Cheyenne Wells6
- Cimarron Hills6
- Clear Creek County6
- Collbran6
- Crested Butte6
- Crestone6
- Cripple Creek6
- Crook6
- Custer County6
- Del Norte6
- Delta6
- Dillon6
- Dove Creek6
- Eads6
- Eagle6
- El Jebel6
- Ellicott6
- Fairplay6
- Florissant6
- Fort Carson6
- Fort Morgan6
- Fountain6
- Fraser6
- Frisco6
- Fruita6
- Fruitvale6
- Garfield6
- Georgetown6
- Grand Junction6
- Grover6
- Gypsum6
- Hayden6
- Ken Caryl6
- Kremmling6
- Las Animas6
- Leadville North6
- Limon6
- Lincoln Park6
- Loma6
- Lyons6
- Maysville6
- Mineral6
- Minturn6
- Monte Vista6
- Montrose6
- Montrose County6
- Mount Crested Butte6
- Mountain Village6
- Nederland6
- New Castle6
- Oak Creek6
- Olathe6
- Orchard City6
- Orchard Mesa6
- Ordway6
- Ouray6
- Ouray County6
- Palmer Lake6
- Paonia6
- Parachute6
- Penrose6
- Pitkin County6
- Poncha Springs6
- Rangely6
- Rio Blanco6
- Rocky Ford6
- Saguache County6
- San Luis6
- San Miguel County6
- Security-Widefield6
- Springfield6
- Sterling6
- Tabernash6
- Teller6
- Telluride6
- Walden6
- Walsenburg6
- Ward6
- Wiley6
- Wolcott6
- Yuma6
- Avon5
- Castle Pines5
- Craig5
- Pagosa Springs5
- Aetna Estates4
- Black Forest4
- Crowley4
- Durango4
- Eagle County4
- Edwards4
- Eldorado Springs4
- Fowler4
- Golden4
- Palisade4
- Silverthorne4
- Summit4
- Wellington4
- Aguilar3
- Bayfield3
- Castle Pines Village3
- Delta County3
- Dolores3
- Glendale, Arapahoe County3
- Glenwood Springs3
- Gunnison3
- Trinidad3
- Walsh3
- Conejos2
- Estes Park2
- Garfield County2
- Granby2
- Green Mountain Falls2
- Hot Sulphur Springs2
- Ignacio2
- Inverness2
- La Junta2
- Lazy Acres2
- Otero County2
- Park County2
- Red Feather Lakes2
- Stratmoor2
- Swink2
- Westcliffe2
- Cascade-Chipita Park1
- Lake1
- Leadville1
- Manzanola1
- Routt County1
- Towaoc1
- Aspen Park0
- Cedaredge0
- Coal Creek, Jefferson County0
- Copper Mountain0
- Idaho Springs0
- Upper Bear Creek0
