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  3. Colorado

Colorado

United States

2026-10-04 12:00
AQI (India)
Good
Pollutants|Pollens
O3
μg/m³
49.8
PM10
μg/m³
17.9
NO2
μg/m³
10.8
CO
μg/m³
250
PM2.5
μg/m³
4.8
SO2
μg/m³
0.9
Weather
  • ℃
  • ℉
4℃
63%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • PM10
  • NO2
  • CO
  • PM2.5
  • SO2
Places included
Adams County
AQI 29
Alamosa County
AQI 14
Arapahoe County
AQI 73
Archuleta County
AQI 20
Baca County
AQI 5
Bent County
AQI 4
Boulder County
AQI 41
Broomfield County
AQI 29
Chaffee County
AQI 11
Cheyenne County
AQI 4
Clear Creek County
AQI 51
Conejos County
AQI 14
Costilla County
AQI 8
Crowley County
AQI 4
Custer County
AQI 11
Delta County
AQI 15
Denver County
AQI 43
Dolores County
AQI 6
Douglas County
AQI 65
Eagle County
AQI 10
El Paso County
AQI 44
Elbert County
AQI 45
Fremont County
AQI 21
Garfield County
AQI 37
Gilpin County
AQI 65
Grand County
AQI 9
Gunnison County
AQI 65
Hinsdale County
AQI 8
Huerfano County
AQI 10
Jackson County
AQI 7
Jefferson County
AQI 54
La Plata County
AQI 41
Lake County
AQI 11
Larimer County
AQI 38
Las Animas County
AQI 7
Lincoln County
AQI 5
Logan County
AQI 5
Mesa County
AQI 56
Mineral County
AQI 9
Moffat County
AQI 10
Montezuma County
AQI 86
Montrose County
AQI 15
Morgan County
AQI 4
Otero County
AQI 4
Ouray County
AQI 10
Park County
AQI 9
Phillips County
AQI 7
Pitkin County
AQI 71
Prowers County
AQI 10
Pueblo County
AQI 45
Rio Blanco County
AQI 12
Rio Grande County
AQI 14
Routt County
AQI 10
Saguache County
AQI 10
San Juan County
AQI 10
San Miguel County
AQI 10
Sedgwick County
AQI 6
Summit County
AQI 9
Teller County
AQI 8
Washington County
AQI 5
Weld County
AQI 33
Yuma County
AQI 6
Data Sources
http://www.airnow.gov/

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