Air quality in Colorado
Air quality index (AQIāŗ) and PM2.5 air pollution in Colorado ā¢ 04:27, Oct 05
Colorado Department of Public Health & Environment (CDPHE)wyndham centerRuss StewartMatt MaccauxAaron BieberCoalition for Clean Air (CCA)S ForestLTom FullerGeorgeLynchUSA National Park ServicejohnCalifornia Air Resources Board (CARB)mckay&zuniE StationSharksWithLazersJSouthern Ute TribeUtah State University (USU)John SalzmanT HagemanSxSmithSteamboatRed Pony FarmairLu VenclBeyondAirRabbit Mountain Equestrian CenterTyWShawn VezzaniphshrcoKennen WarmackJNByron BoyKen DantiJohn Baumamorris101Cheryl SwansonJCHaley Kline MurphyQHEPA Office of Atmospheric ProtectionRodeoB BrennerMemorial Regional HealthJohn MannerEmily StonehamAnonymousKatie GirondaKay LewisEd KKitDDenAnonymous contributor
Colorado Department of Public Health & Environment (CDPHE)wyndham centerRuss StewartMatt MaccauxAaron BieberCoalition for Clean Air (CCA)S ForestLTom FullerGeorgeLynchUSA National Park ServicejohnCalifornia Air Resources Board (CARB)mckay&zuniE StationSharksWithLazersJSouthern Ute TribeUtah State University (USU)John SalzmanT HagemanSxSmithSteamboatRed Pony FarmairLu VenclBeyondAirRabbit Mountain Equestrian CenterTyWShawn VezzaniphshrcoKennen WarmackJNByron BoyKen DantiJohn Baumamorris101Cheryl SwansonJCHaley Kline MurphyQHEPA Office of Atmospheric ProtectionRodeoB BrennerMemorial Regional HealthJohn MannerEmily StonehamAnonymousKatie GirondaKay LewisEd KKitDDenAnonymous 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?
- Larimer75
- Archuleta68
- La Plata County55
- Walden52
- Twin Lakes, Adams County51
- Wheat Ridge51
- Hayden49
- Montezuma County47
- Federal Heights46
- Grand County45
- Shaw Heights45
- Clifton44
- Frederick44
- Gunnison County44
- Tabernash44
- Aspen43
- Prowers43
- Winter Park43
- Cherry Creek42
- Fort Lupton42
- Kremmling42
- Lake City42
- Ouray42
- Colorado City41
- Fruitvale41
- Summit41
- Edgewater40
- Estes Park39
- Mountain View38
- Welby38
- Basalt37
- Thornton37
- Dolores County36
- Estes Park town36
- Westminster36
- Grand Junction35
- Laporte35
- Northglenn35
- Sterling Ranch35
- Applewood34
- Gunbarrel34
- Lazy Acres34
- Silverthorne34
- Redlands33
- Rifle33
- Brighton32
- Glenwood Springs32
- Golden32
- Granby32
- Lyons32
- Mesa32
- Pitkin County32
- Windsor32
- Berthoud31
- Broomfield31
- Cedaredge31
- Conejos31
- Dakota Ridge31
- Derby31
- Fort Collins31
- Genesee31
- Jefferson31
- Leadville31
- Niwot31
- Pagosa Springs31
- Palisade31
- Red Feather Lakes31
- Sherrelwood31
- Cortez30
- Eldorado Springs30
- Orchard Mesa30
- Timnath30
- Avon29
- Boulder29
- Breckenridge29
- Commerce City29
- Craig29
- Eagle County29
- Idaho Springs29
- Lafayette29
- Sheridan29
- Snowmass Village29
- Vail29
- El Jebel28
- Fruita28
- Garfield County28
- Greeley28
- Longmont28
- Loveland28
- Moffat County28
- Montrose28
- Paragon Estates28
- Superior28
- Upper Bear Creek28
- Boulder County27
- Durango27
- Edwards27
- Florence27
- Four Square Mile27
- Lakewood27
- Parker27
- Bennett26
- Delta County26
- Denver26
- Hot Sulphur Springs26
- Keystone26
- Routt County26
- Inverness25
- Oak Creek25
- Silverton25
- CaƱon City24
- Centennial24
- Erie24
- Green Mountain Falls24
- Saguache24
- Trail Side24
- Ward24
- Wellington24
- Bayfield23
- Buena Vista23
- Ignacio23
- Louisville23
- Pueblo County23
- Severance23
- Silt23
- Steamboat Springs23
- Alamosa County22
- Arvada22
- Ault22
- Aurora22
- Castle Pines Village22
- Colorado Springs22
- Copper Mountain22
- Douglas22
- Englewood22
- Hugo22
- Park County22
- Platteville22
- Pueblo22
- Aguilar21
- Castle Rock21
- Costilla County21
- Dolores21
- Eaton21
- Gunnison21
- Highlands Ranch21
- Loma21
- Mancos21
- Sugar City21
- Telluride21
- Towaoc21
- Trinidad21
- Alamosa20
- Altona20
- Evans20
- La Junta20
- Mead20
- Milliken20
- Nathrop20
- Teller20
- Arapahoe County19
- Aristocrat Ranchettes19
- Chaffee County19
- Dacono19
- Firestone19
- Gilcrest19
- Hudson19
- Julesburg19
- Keenesburg19
- Kersey19
- La Salle19
- Lochbuie19
- Nederland19
- Palmer Lake19
- Todd Creek19
- Valmont19
- Acres Green18
- Aetna Estates18
- Air Force Academy18
- Berkley18
- Castle Pines18
- Cherry Hills Village18
- Cimarron Hills18
- Collbran18
- Columbine18
- Columbine Valley18
- Delta18
- Dove Valley18
- Ellicott18
- Fairmount18
- Fort Carson18
- Fountain18
- Fraser18
- Gleneagle18
- Holly Hills18
- Kiowa18
- Lakeside18
- Lone Tree18
- Louviers18
- Meridian18
- Meridian Village18
- Mineral18
- Monument18
- Olathe18
- Orchard City18
- Paonia18
- Penrose18
- Perry Park18
- Poncha Springs18
- Ponderosa Park18
- Salida18
- Security-Widefield18
- Sedalia18
- Stonegate18
- Strasburg18
- The Pinery18
- Watkins18
- Weld18
- Woodmoor18
- Black Forest17
- Black Hawk17
- Byers17
- Center17
- Central17
- Cripple Creek17
- Evergreen17
- Indian Hills17
- Kittredge17
- Logan County17
- Manitou Springs17
- Pueblo West17
- Roxborough Park17
- Fowler16
- Greenwood Village16
- Grover16
- Lake16
- Parachute16
- Swink16
- Battlement Mesa15
- Beulah Valley15
- El Paso15
- Elbert County15
- Limon15
- Wolcott15
- Akron14
- Bethune14
- Brookside14
- Brush14
- Cheraw14
- Clear Creek County14
- Crook14
- Eads14
- Eagle14
- Florissant14
- Fort Morgan14
- Frisco14
- Georgetown14
- Holyoke14
- Las Animas14
- Lincoln Park14
- Montrose County14
- Olney Springs14
- Ordway14
- Otero County14
- Rangely14
- Rocky Ford14
- Springfield14
- Sterling14
- Wiley14
- Wray14
- Yuma14
- Alamosa East13
- Burlington13
- Cattle Creek13
- Crested Butte13
- Crestone13
- Del Norte13
- Fairplay13
- Garfield13
- Gypsum13
- Leadville North13
- Littleton13
- Minturn13
- Monte Vista13
- Mount Crested Butte13
- Mountain Village13
- New Castle13
- Ouray County13
- Rio Blanco13
- Saguache County13
- San Luis13
- San Miguel County13
- Walsenburg13
- Westcliffe13
- Cheyenne Wells12
- Manzanola12
- Carbondale11
- Dove Creek11
- Kit Carson County11
- Lamar11
- Woodland Park11
- Baca County10
- Cascade-Chipita Park8
- Crowley8
- Coal Creek, Jefferson County7
- Custer County7
- Ken Caryl7
- Walsh7
- Stratmoor4
- Aspen Park3
- Dillon3
- Glendale, Arapahoe County3
- Alma0
- Maysville0
- West Pleasant View0
