Air quality in Colorado
Air quality index (AQIāŗ) and PM2.5 air pollution in Colorado ā¢ 15:40, 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?
- Hot Sulphur Springs60
- Delta59
- Buena Vista54
- Gold Hill53
- Derby46
- Commerce City45
- Welby44
- Four Square Mile41
- Grand County37
- Monument36
- Sheridan34
- Northglenn33
- Englewood32
- Denver31
- Dolores County31
- Gunnison31
- Jefferson31
- Westminster31
- Larimer30
- Black Hawk29
- Montezuma County28
- Greeley27
- Loveland27
- Applewood26
- Colorado City26
- Gunnison County26
- Altona24
- Brighton24
- Parker24
- Frederick23
- Greenwood Village23
- Arvada22
- Aspen22
- Fort Lupton22
- Manitou Springs22
- Twin Lakes, Adams County22
- Edgewater21
- Kit Carson County21
- Mountain View21
- Windsor21
- El Paso19
- Platteville19
- Silt19
- Trail Side19
- Carbondale18
- Castle Rock18
- Clifton18
- Golden18
- Leadville18
- Pueblo West18
- Woodland Park18
- Aurora17
- Broomfield17
- Castle Pines17
- Castle Pines Village17
- Douglas17
- Lakewood17
- Thornton17
- Wheat Ridge17
- Costilla County16
- Florence16
- Fort Collins16
- Highlands Ranch16
- Redlands16
- Salida16
- Tabernash16
- Arapahoe County15
- Dakota Ridge15
- Pueblo15
- CaƱon City14
- Colorado Springs14
- Cortez14
- Estes Park14
- Evergreen14
- Fruita14
- Grand Junction14
- Green Mountain Falls14
- Lazy Acres14
- Littleton14
- Saguache14
- Sherrelwood14
- Superior14
- Timnath14
- Aetna Estates13
- Aristocrat Ranchettes13
- Boulder13
- Hudson13
- Keenesburg13
- Lafayette13
- Lochbuie13
- Louisville13
- Watkins13
- Weld13
- Wellington13
- Alamosa12
- Bennett12
- Byers12
- Centennial12
- Dacono12
- Evans12
- Firestone12
- Gilcrest12
- Glendale, Arapahoe County12
- Julesburg12
- Kersey12
- La Salle12
- Loma12
- Orchard Mesa12
- Paragon Estates12
- Red Feather Lakes12
- Sterling Ranch12
- Strasburg12
- Todd Creek12
- Brush11
- Chaffee County11
- Eaton11
- Eldorado Springs11
- Erie11
- Federal Heights11
- Fort Morgan11
- Fruitvale11
- La Plata County11
- Longmont11
- Mead11
- Mesa11
- Milliken11
- Rangely11
- Shaw Heights11
- Archuleta10
- Berkley10
- Burlington10
- Durango10
- Ignacio10
- Lyons10
- Poncha Springs10
- Pueblo County10
- Silverton10
- Acres Green9
- Ault9
- Berthoud9
- Black Forest9
- Cedaredge9
- Cherry Creek9
- Cherry Hills Village9
- Columbine9
- Columbine Valley9
- Dove Valley9
- Fairmount9
- Gunbarrel9
- Hayden9
- Holly Hills9
- Inverness9
- Kiowa9
- Lake City9
- Lakeside9
- Lamar9
- Lone Tree9
- Meridian9
- Meridian Village9
- Niwot9
- Ponderosa Park9
- Rio Blanco9
- Rocky Ford9
- Severance9
- Stonegate9
- The Pinery9
- Towaoc9
- Valmont9
- West Pleasant View9
- Akron8
- Boulder County8
- Conejos8
- Crook8
- Estes Park town8
- Grover8
- Holyoke8
- Indian Hills8
- Kittredge8
- Laporte8
- Limon8
- Logan County8
- Louviers8
- Montrose8
- Olney Springs8
- Palisade8
- Palmer Lake8
- Park County8
- Pitkin County8
- Sedalia8
- Sterling8
- Summit8
- Teller8
- Wray8
- Yuma8
- Air Force Academy7
- Alamosa East7
- Battlement Mesa7
- Beulah Valley7
- Brookside7
- Central7
- Cimarron Hills7
- Clear Creek County7
- Collbran7
- Crestone7
- Cripple Creek7
- Custer County7
- Del Norte7
- Delta County7
- Dove Creek7
- Eagle County7
- Ellicott7
- Florissant7
- Fort Carson7
- Fountain7
- Fraser7
- Georgetown7
- Gleneagle7
- Lincoln Park7
- Monte Vista7
- Montrose County7
- Nederland7
- New Castle7
- Orchard City7
- Pagosa Springs7
- Parachute7
- Penrose7
- Perry Park7
- Prowers7
- Saguache County7
- San Luis7
- San Miguel County7
- Security-Widefield7
- Walden7
- Walsenburg7
- Westcliffe7
- Woodmoor7
- Basalt6
- Bethune6
- Cattle Creek6
- Cheraw6
- Cheyenne Wells6
- Craig6
- Crested Butte6
- Dillon6
- Eads6
- Eagle6
- El Jebel6
- Elbert County6
- Fairplay6
- Frisco6
- Garfield6
- Gypsum6
- Hugo6
- Kremmling6
- Las Animas6
- Leadville North6
- Maysville6
- Minturn6
- Moffat County6
- Mount Crested Butte6
- Mountain Village6
- Olathe6
- Ordway6
- Otero County6
- Ouray County6
- Roxborough Park6
- Springfield6
- Sugar City6
- Upper Bear Creek6
- Ward6
- Wiley6
- Wolcott6
- Edwards5
- Fowler5
- Genesee5
- Mancos5
- Oak Creek5
- Rifle5
- Copper Mountain4
- Dolores4
- Glenwood Springs4
- Granby4
- La Junta4
- Manzanola4
- Mineral4
- Routt County4
- Snowmass Village4
- Steamboat Springs4
- Telluride4
- Vail4
- Winter Park4
- Aguilar3
- Alamosa County3
- Bayfield3
- Center3
- Crowley3
- Silverthorne3
- Swink3
- Garfield County2
- Idaho Springs2
- Avon1
- Baca County1
- Coal Creek, Jefferson County1
- Paonia1
- Stratmoor1
- Trinidad1
- Alma0
- Aspen Park0
- Breckenridge0
- Cascade-Chipita Park0
- Ken Caryl0
- Keystone0
- Lake0
- Nathrop0
- Ouray0
- Walsh0
