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  3. Colorado

Colorado

United States

2026-09-20 00:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
88.1
PM10
μg/m³
12.2
PM2.5
μg/m³
2
NO2
μg/m³
7.4
CO
μg/m³
166.7
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
7℃
63%
12 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 38
Alamosa County
AQI 13
Arapahoe County
AQI 50
Archuleta County
AQI 38
Baca County
AQI 14
Bent County
AQI 17
Boulder County
AQI 37
Broomfield County
AQI 13
Chaffee County
AQI 3
Cheyenne County
AQI 12
Clear Creek County
AQI 38
Conejos County
AQI 12
Costilla County
AQI 5
Crowley County
AQI 12
Custer County
AQI 4
Delta County
AQI 8
Denver County
AQI 38
Dolores County
AQI 10
Douglas County
AQI 42
Eagle County
AQI 5
El Paso County
AQI 46
Elbert County
AQI 28
Fremont County
AQI 10
Garfield County
AQI 38
Gilpin County
AQI 39
Grand County
AQI 5
Gunnison County
AQI 31
Hinsdale County
AQI 9
Huerfano County
AQI 4
Jackson County
AQI 6
Jefferson County
AQI 44
La Plata County
AQI 34
Lake County
AQI 3
Larimer County
AQI 30
Las Animas County
AQI 5
Lincoln County
AQI 12
Logan County
AQI 6
Mesa County
AQI 37
Mineral County
AQI 7
Moffat County
AQI 8
Montezuma County
AQI 38
Montrose County
AQI 7
Morgan County
AQI 11
Otero County
AQI 12
Ouray County
AQI 13
Park County
AQI 5
Phillips County
AQI 8
Pitkin County
AQI 33
Prowers County
AQI 59
Pueblo County
AQI 41
Rio Blanco County
AQI 8
Rio Grande County
AQI 12
Routt County
AQI 12
Saguache County
AQI 5
San Juan County
AQI 13
San Miguel County
AQI 11
Sedgwick County
AQI 6
Summit County
AQI 5
Teller County
AQI 17
Washington County
AQI 8
Weld County
AQI 41
Yuma County
AQI 10
Data Sources
http://www.airnow.gov/

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