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  3. Colorado

Colorado

United States

2026-09-19 13:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
39.6
PM2.5
μg/m³
2.8
PM10
μg/m³
9
NO2
μg/m³
17.2
CO
μg/m³
229.2
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
4℃
89%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 21
Alamosa County
AQI 18
Arapahoe County
AQI 26
Archuleta County
AQI 19
Baca County
AQI 22
Bent County
AQI 23
Boulder County
AQI 15
Broomfield County
AQI 23
Chaffee County
AQI 6
Cheyenne County
AQI 19
Clear Creek County
AQI 18
Conejos County
AQI 18
Costilla County
AQI 16
Crowley County
AQI 21
Custer County
AQI 15
Delta County
AQI 11
Denver County
AQI 18
Dolores County
AQI 8
Douglas County
AQI 16
Eagle County
AQI 6
El Paso County
AQI 22
Elbert County
AQI 37
Fremont County
AQI 13
Garfield County
AQI 21
Gilpin County
AQI 24
Grand County
AQI 11
Gunnison County
AQI 21
Hinsdale County
AQI 9
Huerfano County
AQI 11
Jackson County
AQI 10
Jefferson County
AQI 17
La Plata County
AQI 22
Lake County
AQI 5
Larimer County
AQI 20
Las Animas County
AQI 10
Lincoln County
AQI 24
Logan County
AQI 18
Mesa County
AQI 27
Mineral County
AQI 12
Moffat County
AQI 17
Montezuma County
AQI 21
Montrose County
AQI 11
Morgan County
AQI 50
Otero County
AQI 23
Ouray County
AQI 11
Park County
AQI 12
Phillips County
AQI 10
Pitkin County
AQI 16
Prowers County
AQI 19
Pueblo County
AQI 21
Rio Blanco County
AQI 17
Rio Grande County
AQI 18
Routt County
AQI 16
Saguache County
AQI 12
San Juan County
AQI 11
San Miguel County
AQI 11
Sedgwick County
AQI 8
Summit County
AQI 11
Teller County
AQI 16
Washington County
AQI 24
Weld County
AQI 22
Yuma County
AQI 16
Data Sources
http://www.airnow.gov/

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