Air quality in Colorado
Air quality index (AQI⁺) and PM2.5 air pollution in Colorado • 05:07, Nov 04
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&zuniSharksWithLazersJSouthern Ute TribeUtah State University (USU)John SalzmanT HagemanSxSmithairSteamboatRed Pony FarmLu VenclBeyondAirRabbit Mountain Equestrian CenterTyWShawn VezzaniphshrcoJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Cheryl SwansonHaley Kline MurphyJCQHEPA Office of Atmospheric ProtectionRodeoJohn MannerB BrennerMemorial Regional HealthEmily StonehamAnonymousKatie GirondaKay LewisEd 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&zuniSharksWithLazersJSouthern Ute TribeUtah State University (USU)John SalzmanT HagemanSxSmithairSteamboatRed Pony FarmLu VenclBeyondAirRabbit Mountain Equestrian CenterTyWShawn VezzaniphshrcoJNKennen WarmackByron BoyKen DantiJohn Baumamorris101Cheryl SwansonHaley Kline MurphyJCQHEPA Office of Atmospheric ProtectionRodeoJohn MannerB BrennerMemorial Regional HealthEmily StonehamAnonymousKatie GirondaKay LewisEd 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?
- Federal Heights82
- Applewood37
- Loveland37
- Grand County36
- Larimer36
- Welby36
- Centennial35
- Fort Collins35
- Boulder34
- Douglas34
- Denver33
- Greeley33
- Jefferson33
- Evergreen32
- Gunnison County32
- Manitou Springs32
- Pueblo West32
- Timnath32
- Center31
- El Paso30
- Colorado City29
- Mesa29
- Lake City25
- Carbondale24
- Kit Carson County24
- Monument24
- Aspen23
- Montezuma County23
- Cortez19
- Dolores County19
- Castle Rock18
- Englewood18
- Garfield County18
- Roxborough Park18
- Woodland Park18
- Edgewater16
- Pueblo16
- Derby15
- Rifle15
- Brighton14
- Clifton14
- Estes Park town14
- Four Square Mile14
- Delta13
- Estes Park13
- Mountain View13
- Prowers13
- Shaw Heights13
- Sheridan13
- Sherrelwood13
- Sugar City13
- Towaoc13
- Grand Junction12
- Greenwood Village12
- Northglenn12
- Palisade12
- Silt12
- Steamboat Springs12
- Bennett11
- Florence11
- Fruitvale11
- Poncha Springs11
- Salida11
- Snowmass Village11
- Tabernash11
- Aetna Estates10
- Berkley10
- Buena Vista10
- Cherry Creek10
- Cherry Hills Village10
- Glendale, Arapahoe County10
- Holly Hills10
- Lakeside10
- Paonia10
- Todd Creek10
- Windsor10
- Acres Green9
- Altona9
- Dacono9
- Dakota Ridge9
- Dove Valley9
- Fairmount9
- Gunnison9
- Inverness9
- La Plata County9
- Lone Tree9
- Lyons9
- Meridian9
- Redlands9
- Saguache9
- Cañon City8
- Columbine8
- Columbine Valley8
- Commerce City8
- Durango8
- Elbert County8
- Frederick8
- Fruita8
- Lakewood8
- Lochbuie8
- Manzanola8
- Meridian Village8
- Parker8
- Stonegate8
- Superior8
- Telluride8
- Thornton8
- Weld8
- West Pleasant View8
- Westminster8
- Aristocrat Ranchettes7
- Arvada7
- Cascade-Chipita Park7
- Castle Pines7
- Chaffee County7
- Delta County7
- Firestone7
- Golden7
- Hot Sulphur Springs7
- Julesburg7
- Ken Caryl7
- Littleton7
- Longmont7
- Louviers7
- Montrose7
- Nathrop7
- Pueblo County7
- Sedalia7
- Silverton7
- Twin Lakes, Adams County7
- Watkins7
- Westcliffe7
- Air Force Academy6
- Akron6
- Alamosa East6
- Ault6
- Avon6
- Baca County6
- Battlement Mesa6
- Bethune6
- Beulah Valley6
- Black Hawk6
- Brookside6
- Broomfield6
- Brush6
- Burlington6
- Byers6
- Cattle Creek6
- Central6
- Cheraw6
- Cheyenne Wells6
- Cimarron Hills6
- Clear Creek County6
- Collbran6
- Conejos6
- Crested Butte6
- Crestone6
- Cripple Creek6
- Crook6
- Custer County6
- Del Norte6
- Dillon6
- Dove Creek6
- Eads6
- Eagle6
- Eagle County6
- Eaton6
- El Jebel6
- Ellicott6
- Erie6
- Evans6
- Fairplay6
- Florissant6
- Fort Carson6
- Fort Lupton6
- Fort Morgan6
- Fountain6
- Fraser6
- Frisco6
- Garfield6
- Genesee6
- Georgetown6
- Gilcrest6
- Gleneagle6
- Grover6
- Gypsum6
- Hayden6
- Holyoke6
- Hudson6
- Hugo6
- Indian Hills6
- Keenesburg6
- Kersey6
- Keystone6
- Kiowa6
- Kittredge6
- Kremmling6
- La Salle6
- Laporte6
- Las Animas6
- Leadville North6
- Limon6
- Lincoln Park6
- Logan County6
- Loma6
- Louisville6
- Maysville6
- Mead6
- Milliken6
- Mineral6
- Minturn6
- Monte Vista6
- Montrose County6
- Mount Crested Butte6
- Mountain Village6
- Nederland6
- New Castle6
- Niwot6
- Oak Creek6
- Olathe6
- Orchard City6
- Orchard Mesa6
- Ordway6
- Ouray County6
- Parachute6
- Penrose6
- Perry Park6
- Pitkin County6
- Ponderosa Park6
- Rangely6
- Red Feather Lakes6
- Rio Blanco6
- Saguache County6
- San Luis6
- San Miguel County6
- Security-Widefield6
- Severance6
- Springfield6
- Sterling6
- Sterling Ranch6
- Strasburg6
- Stratmoor6
- The Pinery6
- Vail6
- Valmont6
- Walden6
- Walsenburg6
- Walsh6
- Ward6
- Wellington6
- Wiley6
- Wolcott6
- Woodmoor6
- Wray6
- Yuma6
- Archuleta5
- Aurora5
- Berthoud5
- Boulder County5
- Colorado Springs5
- Crowley5
- Edwards5
- Lazy Acres5
- Paragon Estates5
- Craig4
- Dolores4
- Glenwood Springs4
- Gunbarrel4
- Highlands Ranch4
- Lafayette4
- Lamar4
- Olney Springs4
- Pagosa Springs4
- Silverthorne4
- Summit4
- Teller4
- Aguilar3
- Alamosa3
- Alamosa County3
- Cedaredge3
- Copper Mountain3
- Eldorado Springs3
- Fowler3
- Granby3
- Ignacio3
- Moffat County3
- Otero County3
- Palmer Lake3
- Park County3
- Swink3
- Upper Bear Creek3
- Arapahoe County2
- Basalt2
- Black Forest2
- La Junta2
- Leadville2
- Mancos2
- Rocky Ford2
- Routt County2
- Trinidad2
- Winter Park2
- Bayfield1
- Breckenridge1
- Castle Pines Village1
- Coal Creek, Jefferson County1
- Platteville1
- Wheat Ridge1
- Alma0
- Aspen Park0
- Costilla County0
- Green Mountain Falls0
- Idaho Springs0
- Lake0
- Ouray0
