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  3. Colorado

Colorado

United States

2026-06-21 22:00
AQI (US)
Moderate
Pollutants|Pollens
O3
μg/m³
125.7
PM2.5
μg/m³
7.3
PM10
μg/m³
25.6
NO2
μg/m³
4.4
CO
μg/m³
166.7
SO2
μg/m³
2
Weather
  • ℃
  • ℉
19℃
14%
24 kph
4 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 91
Alamosa County
AQI 23
Arapahoe County
AQI 88
Archuleta County
AQI 97
Baca County
AQI 25
Bent County
AQI 29
Boulder County
AQI 82
Broomfield County
AQI 44
Chaffee County
AQI 15
Cheyenne County
AQI 32
Clear Creek County
AQI 58
Conejos County
AQI 23
Costilla County
AQI 14
Crowley County
AQI 25
Custer County
AQI 23
Delta County
AQI 46
Denver County
AQI 74
Dolores County
AQI 28
Douglas County
AQI 66
Eagle County
AQI 11
El Paso County
AQI 72
Elbert County
AQI 38
Fremont County
AQI 33
Garfield County
AQI 28
Gilpin County
AQI 57
Grand County
AQI 13
Gunnison County
AQI 69
Hinsdale County
AQI 48
Huerfano County
AQI 15
Jackson County
AQI 12
Jefferson County
AQI 83
La Plata County
AQI 82
Lake County
AQI 12
Larimer County
AQI 58
Las Animas County
AQI 12
Lincoln County
AQI 31
Logan County
AQI 14
Mesa County
AQI 76
Mineral County
AQI 22
Moffat County
AQI 17
Montezuma County
AQI 80
Montrose County
AQI 46
Morgan County
AQI 12
Otero County
AQI 23
Ouray County
AQI 65
Park County
AQI 13
Phillips County
AQI 15
Pitkin County
AQI 57
Prowers County
AQI 32
Pueblo County
AQI 69
Rio Blanco County
AQI 12
Rio Grande County
AQI 23
Routt County
AQI 14
Saguache County
AQI 19
San Juan County
AQI 65
San Miguel County
AQI 65
Sedgwick County
AQI 18
Summit County
AQI 13
Teller County
AQI 55
Washington County
AQI 13
Weld County
AQI 90
Yuma County
AQI 14
Data Sources
http://www.airnow.gov/

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