Air quality in Colorado
Air quality index (AQI⁺) and PM2.5 air pollution in Colorado • 03:46, 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?
- Red Feather Lakes57
- Wellington57
- Silverton55
- Timnath55
- Florence54
- Greeley52
- Silt51
- Derby49
- Montezuma County47
- Windsor47
- Gunnison46
- Black Hawk42
- Estes Park42
- Winter Park42
- Commerce City41
- Estes Park town40
- Aspen39
- Delta39
- Larimer39
- Fort Collins38
- Twin Lakes, Adams County38
- Federal Heights37
- Platteville37
- Dolores County36
- Welby36
- Applewood35
- Edgewater34
- Gunnison County34
- Northglenn34
- Wheat Ridge34
- Centennial33
- Prowers33
- Shaw Heights33
- Sheridan33
- Walsh33
- Denver32
- Grand County32
- Jefferson32
- Leadville32
- Loveland32
- Manitou Springs32
- Saguache32
- Westminster32
- Berthoud31
- Brighton31
- Colorado City31
- Frederick31
- Weld31
- Evergreen30
- La Plata County30
- Fort Lupton29
- Thornton29
- Aristocrat Ranchettes27
- Chaffee County27
- Hudson27
- Lochbuie27
- Longmont27
- Maysville27
- Bennett26
- Gilcrest26
- Keenesburg26
- Mesa26
- Todd Creek26
- Trail Side26
- Dacono25
- Evans25
- Firestone25
- La Salle25
- Burlington24
- Cañon City24
- Costilla County24
- Dakota Ridge24
- Douglas24
- Kersey24
- Lamar24
- Mead24
- Milliken24
- Parker24
- Pitkin County24
- Sherrelwood24
- Aetna Estates23
- Ault23
- Boulder23
- Broomfield23
- Eaton23
- El Paso23
- Englewood23
- Kit Carson County23
- Lyons23
- Severance23
- Tabernash23
- Baca County22
- Grand Junction22
- Lafayette22
- Lakeside22
- Watkins22
- Altona21
- Eagle County21
- Green Mountain Falls21
- Greenwood Village21
- Grover21
- Strasburg21
- Golden20
- Highlands Ranch20
- Keystone20
- Lake City20
- Lakewood20
- Niwot20
- Paragon Estates20
- Redlands20
- Arvada19
- Aurora19
- Avon19
- Berkley19
- Bethune19
- Brush19
- Byers19
- Cherry Creek19
- Colorado Springs19
- Cortez19
- Erie19
- Fort Morgan19
- Gunbarrel19
- Julesburg19
- Laporte19
- Poncha Springs19
- Salida19
- Sterling Ranch19
- Summit19
- Valmont19
- Akron18
- Basalt18
- Breckenridge18
- Buena Vista18
- Castle Rock18
- Cedaredge18
- Eldorado Springs18
- Granby18
- Holly Hills18
- Hot Sulphur Springs18
- Limon18
- Littleton18
- Palisade18
- Pueblo County18
- Wray18
- Archuleta17
- Black Forest17
- Boulder County17
- Castle Pines Village17
- Cherry Hills Village17
- Clifton17
- Delta County17
- Dove Valley17
- Genesee17
- Inverness17
- Lazy Acres17
- Montrose17
- Monument17
- Ordway17
- Palmer Lake17
- Pueblo West17
- Silverthorne17
- Stonegate17
- Sugar City17
- Upper Bear Creek17
- Vail17
- Acres Green16
- Cascade-Chipita Park16
- Center16
- Columbine Valley16
- Durango16
- Edwards16
- Fairmount16
- Fruita16
- Lone Tree16
- Louisville16
- Meridian16
- Meridian Village16
- Otero County16
- Ouray16
- Park County16
- Sterling16
- Trinidad16
- Ward16
- Yuma16
- Aguilar15
- Cheyenne Wells15
- Columbine15
- El Jebel15
- Elbert County15
- Kiowa15
- Orchard Mesa15
- Pagosa Springs15
- Ponderosa Park15
- Rocky Ford15
- Superior15
- The Pinery15
- Cheraw14
- Copper Mountain14
- Crook14
- Dolores14
- Eads14
- Ellicott14
- Holyoke14
- Logan County14
- Louviers14
- Mancos14
- Nederland14
- Routt County14
- Sedalia14
- Towaoc14
- West Pleasant View14
- Wiley14
- Alamosa County13
- Arapahoe County13
- Battlement Mesa13
- Central13
- Craig13
- Garfield County13
- Glenwood Springs13
- Idaho Springs13
- Indian Hills13
- Kittredge13
- La Junta13
- Las Animas13
- Olney Springs13
- Parachute13
- Pueblo13
- Rangely13
- Rio Blanco13
- Springfield13
- Swink13
- Teller13
- Westcliffe13
- Aspen Park12
- Cimarron Hills12
- Crowley12
- Fountain12
- Fowler12
- Ignacio12
- Lake12
- Mineral12
- Rifle12
- Security-Widefield12
- Air Force Academy11
- Alamosa11
- Alma11
- Bayfield11
- Beulah Valley11
- Brookside11
- Castle Pines11
- Cattle Creek11
- Clear Creek County11
- Collbran11
- Conejos11
- Crested Butte11
- Crestone11
- Cripple Creek11
- Custer County11
- Del Norte11
- Dillon11
- Dove Creek11
- Eagle11
- Fairplay11
- Florissant11
- Fort Carson11
- Fraser11
- Frisco11
- Fruitvale11
- Garfield11
- Georgetown11
- Gleneagle11
- Gypsum11
- Hugo11
- Kremmling11
- Leadville North11
- Lincoln Park11
- Loma11
- Minturn11
- Monte Vista11
- Mount Crested Butte11
- Mountain Village11
- Nathrop11
- New Castle11
- Olathe11
- Orchard City11
- Ouray County11
- Penrose11
- Perry Park11
- Saguache County11
- Telluride11
- Wolcott11
- Woodmoor11
- Manzanola10
- Hayden9
- Moffat County9
- Oak Creek9
- Walden9
- Walsenburg9
- Snowmass Village8
- Steamboat Springs8
- Alamosa East7
- Montrose County7
- San Luis7
- San Miguel County7
- Stratmoor7
- Carbondale6
- Roxborough Park6
- Woodland Park6
- Glendale, Arapahoe County4
- Paonia3
- Coal Creek, Jefferson County1
- Ken Caryl0
