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  3. Colorado

Colorado

United States

2026-09-20 20:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
111.3
PM2.5
μg/m³
2.6
PM10
μg/m³
11.1
NO2
μg/m³
4.4
CO
μg/m³
187.5
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
12℃
20%
22 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 57
Alamosa County
AQI 12
Arapahoe County
AQI 48
Archuleta County
AQI 49
Baca County
AQI 6
Bent County
AQI 6
Boulder County
AQI 51
Broomfield County
AQI 19
Chaffee County
AQI 11
Cheyenne County
AQI 4
Clear Creek County
AQI 45
Conejos County
AQI 12
Costilla County
AQI 6
Crowley County
AQI 9
Custer County
AQI 7
Delta County
AQI 16
Denver County
AQI 50
Dolores County
AQI 11
Douglas County
AQI 51
Eagle County
AQI 10
El Paso County
AQI 49
Elbert County
AQI 29
Fremont County
AQI 11
Garfield County
AQI 54
Gilpin County
AQI 50
Grand County
AQI 9
Gunnison County
AQI 48
Hinsdale County
AQI 10
Huerfano County
AQI 6
Jackson County
AQI 10
Jefferson County
AQI 68
La Plata County
AQI 48
Lake County
AQI 10
Larimer County
AQI 49
Las Animas County
AQI 7
Lincoln County
AQI 7
Logan County
AQI 4
Mesa County
AQI 49
Mineral County
AQI 8
Moffat County
AQI 11
Montezuma County
AQI 46
Montrose County
AQI 16
Morgan County
AQI 8
Otero County
AQI 9
Ouray County
AQI 12
Park County
AQI 10
Phillips County
AQI 5
Pitkin County
AQI 38
Prowers County
AQI 18
Pueblo County
AQI 45
Rio Blanco County
AQI 11
Rio Grande County
AQI 12
Routt County
AQI 21
Saguache County
AQI 9
San Juan County
AQI 12
San Miguel County
AQI 12
Sedgwick County
AQI 5
Summit County
AQI 9
Teller County
AQI 13
Washington County
AQI 5
Weld County
AQI 46
Yuma County
AQI 5
Data Sources
http://www.airnow.gov/

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