Air quality in Colorado
Air quality index (AQI⁺) and PM2.5 air pollution in Colorado • 16:21, Oct 29
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 CenterTyWphshrcoShawn VezzaniJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Cheryl SwansonHaley Kline MurphyJCQHEPA Office of Atmospheric ProtectionRodeoJohn MannerB BrennerEmily StonehamMemorial Regional HealthAnonymousKay LewisKatie GirondaEd KAnonymous 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 CenterTyWphshrcoShawn VezzaniJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Cheryl SwansonHaley Kline MurphyJCQHEPA Office of Atmospheric ProtectionRodeoJohn MannerB BrennerEmily StonehamMemorial Regional HealthAnonymousKay LewisKatie GirondaEd KAnonymous 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?
- Wellington57
- Windsor53
- Red Feather Lakes48
- Walsh48
- Grand County45
- Montezuma County45
- Black Hawk44
- Commerce City43
- Greeley42
- Aspen39
- Burlington39
- Brighton38
- Silverton38
- Applewood37
- Platteville37
- Timnath37
- Centennial36
- Manitou Springs35
- Gunnison County34
- Weld34
- Wheat Ridge34
- Delta33
- Fort Collins33
- Fort Lupton33
- Jefferson33
- Estes Park32
- Welby32
- Frederick31
- Sheridan31
- Trail Side31
- Twin Lakes, Adams County31
- Prowers30
- Baca County29
- Colorado City29
- Englewood29
- Evergreen29
- Larimer29
- Aristocrat Ranchettes28
- Edgewater28
- Federal Heights28
- Gilcrest28
- Hudson28
- Keenesburg28
- La Salle28
- Lochbuie28
- Shaw Heights28
- Westminster28
- Dacono27
- Dolores County27
- Evans27
- Firestone27
- Kersey27
- Loveland27
- Mesa27
- Milliken27
- Todd Creek27
- Aetna Estates26
- Estes Park town26
- Kit Carson County26
- Leadville26
- Mead26
- Strasburg26
- Watkins26
- Ault25
- Byers25
- Eaton25
- Northglenn25
- Severance25
- Costilla County24
- Denver24
- Pueblo West24
- Salida24
- Black Forest23
- Cherry Creek23
- El Paso23
- Fort Morgan23
- La Plata County23
- Thornton23
- Bennett22
- Berthoud22
- Brush22
- Grover22
- Keystone22
- Douglas21
- Greenwood Village21
- Lamar21
- Longmont21
- Niwot21
- Tabernash21
- Colorado Springs20
- Golden20
- Monument20
- Parker20
- Summit20
- Aurora19
- Berkley19
- Cortez19
- Dakota Ridge19
- Erie19
- Julesburg19
- Lakewood19
- Laporte19
- Lazy Acres19
- Redlands19
- Valmont19
- Akron18
- Archuleta18
- Arvada18
- Breckenridge18
- Broomfield18
- Castle Pines Village18
- Derby18
- Dove Valley18
- Eagle County18
- Highlands Ranch18
- Holly Hills18
- Hot Sulphur Springs18
- Hugo18
- Inverness18
- La Junta18
- Sherrelwood18
- Sterling Ranch18
- Stonegate18
- Sugar City18
- Acres Green17
- Altona17
- Avon17
- Bethune17
- Cañon City17
- Castle Rock17
- Cedaredge17
- Cherry Hills Village17
- Grand Junction17
- Green Mountain Falls17
- Gunnison17
- Logan County17
- Meridian17
- Meridian Village17
- Pueblo17
- Sterling17
- Wray17
- Yuma17
- Boulder County16
- Cheyenne Wells16
- Crook16
- Delta County16
- Eldorado Springs16
- Florence16
- Genesee16
- Lafayette16
- Lone Tree16
- Montrose16
- Ouray16
- Palisade16
- Palmer Lake16
- Paragon Estates16
- Pitkin County16
- Ponderosa Park16
- Snowmass Village16
- Superior16
- The Pinery16
- Basalt15
- Boulder15
- Fairmount15
- Granby15
- Kiowa15
- Rocky Ford15
- Swink15
- Wiley15
- Aguilar14
- Cascade-Chipita Park14
- Chaffee County14
- Cheraw14
- Columbine14
- Columbine Valley14
- Eads14
- Gunbarrel14
- Holyoke14
- Lake City14
- Lakeside14
- Las Animas14
- Louisville14
- Lyons14
- Olney Springs14
- Otero County14
- Poncha Springs14
- Silverthorne14
- Springfield14
- Teller14
- West Pleasant View14
- Winter Park14
- Buena Vista13
- Castle Pines13
- Copper Mountain13
- Edwards13
- Elbert County13
- Limon13
- Louviers13
- Orchard Mesa13
- Ordway13
- Park County13
- Saguache13
- Sedalia13
- Telluride13
- Towaoc13
- Upper Bear Creek13
- Ward13
- Westcliffe13
- Alamosa12
- Crowley12
- Durango12
- Fruita12
- Indian Hills12
- Pagosa Springs12
- Arapahoe County11
- Center11
- Conejos11
- Dolores11
- Ellicott11
- Fowler11
- Garfield County11
- Kittredge11
- Manzanola11
- Nederland11
- Pueblo County11
- Trinidad11
- Vail11
- Bayfield10
- Ignacio10
- Perry Park10
- Air Force Academy9
- Alamosa County9
- Alamosa East9
- Aspen Park9
- Beulah Valley9
- Brookside9
- Central9
- Cimarron Hills9
- Craig9
- Crestone9
- Custer County9
- Del Norte9
- Dove Creek9
- Fort Carson9
- Fountain9
- Fruitvale9
- Gleneagle9
- Idaho Springs9
- Loma9
- Mancos9
- Monte Vista9
- Montrose County9
- Olathe9
- Orchard City9
- Parachute9
- Penrose9
- Rangely9
- Rio Blanco9
- San Luis9
- San Miguel County9
- Security-Widefield9
- Silt9
- Walsenburg9
- Woodmoor9
- Battlement Mesa8
- Collbran8
- Fraser8
- Georgetown8
- Glenwood Springs8
- Lincoln Park8
- Mountain Village8
- Nathrop8
- Ouray County8
- Rifle8
- Walden8
- Alma7
- Cattle Creek7
- Clear Creek County7
- Crested Butte7
- Cripple Creek7
- Dillon7
- Eagle7
- El Jebel7
- Fairplay7
- Florissant7
- Frisco7
- Garfield7
- Glendale, Arapahoe County7
- Gypsum7
- Hayden7
- Kremmling7
- Leadville North7
- Maysville7
- Minturn7
- Mount Crested Butte7
- New Castle7
- Routt County7
- Saguache County7
- Stratmoor7
- Wolcott7
- Carbondale6
- Clifton6
- Moffat County6
- Roxborough Park6
- Steamboat Springs6
- Lake5
- Oak Creek5
- Mineral4
- Paonia2
- Coal Creek, Jefferson County0
- Ken Caryl0
- Littleton0
- Woodland Park0
