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  3. Colorado

Colorado

United States

2026-09-22 04:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
81.6
PM2.5
μg/m³
3.2
PM10
μg/m³
13.7
NO2
μg/m³
12.1
CO
μg/m³
270.8
SO2
μg/m³
0.9
Weather
  • ℃
  • ℉
4℃
67%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 37
Alamosa County
AQI 15
Arapahoe County
AQI 40
Archuleta County
AQI 24
Baca County
AQI 14
Bent County
AQI 17
Boulder County
AQI 47
Broomfield County
AQI 16
Chaffee County
AQI 17
Cheyenne County
AQI 13
Clear Creek County
AQI 38
Conejos County
AQI 15
Costilla County
AQI 7
Crowley County
AQI 16
Custer County
AQI 10
Delta County
AQI 25
Denver County
AQI 41
Dolores County
AQI 13
Douglas County
AQI 34
Eagle County
AQI 23
El Paso County
AQI 46
Elbert County
AQI 25
Fremont County
AQI 13
Garfield County
AQI 22
Gilpin County
AQI 45
Grand County
AQI 20
Gunnison County
AQI 33
Hinsdale County
AQI 17
Huerfano County
AQI 11
Jackson County
AQI 19
Jefferson County
AQI 46
La Plata County
AQI 27
Lake County
AQI 19
Larimer County
AQI 38
Las Animas County
AQI 12
Lincoln County
AQI 10
Logan County
AQI 11
Mesa County
AQI 30
Mineral County
AQI 9
Moffat County
AQI 15
Montezuma County
AQI 32
Montrose County
AQI 25
Morgan County
AQI 12
Otero County
AQI 22
Ouray County
AQI 22
Park County
AQI 12
Phillips County
AQI 14
Pitkin County
AQI 30
Prowers County
AQI 9
Pueblo County
AQI 37
Rio Blanco County
AQI 21
Rio Grande County
AQI 15
Routt County
AQI 24
Saguache County
AQI 12
San Juan County
AQI 22
San Miguel County
AQI 22
Sedgwick County
AQI 10
Summit County
AQI 21
Teller County
AQI 14
Washington County
AQI 14
Weld County
AQI 36
Yuma County
AQI 15
Data Sources
http://www.airnow.gov/

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Cities Nearby

Keystone
AQI 23
Georgetown
AQI 37
Breckenridge
AQI 21
Silverthorne
AQI 21
Frisco
AQI 21
Wildernest
AQI 21
Bailey
AQI 36
Idaho Springs
AQI 43
Copper Mountain
AQI 20
Black Hawk
AQI 45
Winter Park
AQI 27