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  3. Colorado

Colorado

United States

2026-09-15 22:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
102.6
PM2.5
μg/m³
4.5
PM10
μg/m³
24.2
CO
μg/m³
250
NO2
μg/m³
3.8
SO2
μg/m³
1
Weather
  • ℃
  • ℉
13℃
52%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • CO
  • NO2
  • SO2
Places included
Adams County
AQI 45
Alamosa County
AQI 16
Arapahoe County
AQI 45
Archuleta County
AQI 41
Baca County
AQI 16
Bent County
AQI 20
Boulder County
AQI 79
Broomfield County
AQI 37
Chaffee County
AQI 6
Cheyenne County
AQI 13
Clear Creek County
AQI 46
Conejos County
AQI 16
Costilla County
AQI 11
Crowley County
AQI 20
Custer County
AQI 19
Delta County
AQI 18
Denver County
AQI 43
Dolores County
AQI 13
Douglas County
AQI 54
Eagle County
AQI 8
El Paso County
AQI 42
Elbert County
AQI 29
Fremont County
AQI 33
Garfield County
AQI 37
Gilpin County
AQI 69
Grand County
AQI 6
Gunnison County
AQI 37
Hinsdale County
AQI 12
Huerfano County
AQI 18
Jackson County
AQI 8
Jefferson County
AQI 82
La Plata County
AQI 43
Lake County
AQI 6
Larimer County
AQI 50
Las Animas County
AQI 15
Lincoln County
AQI 12
Logan County
AQI 12
Mesa County
AQI 41
Mineral County
AQI 17
Moffat County
AQI 10
Montezuma County
AQI 42
Montrose County
AQI 18
Morgan County
AQI 13
Otero County
AQI 23
Ouray County
AQI 17
Park County
AQI 13
Phillips County
AQI 11
Pitkin County
AQI 35
Prowers County
AQI 25
Pueblo County
AQI 40
Rio Blanco County
AQI 10
Rio Grande County
AQI 16
Routt County
AQI 16
Saguache County
AQI 15
San Juan County
AQI 17
San Miguel County
AQI 17
Sedgwick County
AQI 11
Summit County
AQI 8
Teller County
AQI 28
Washington County
AQI 12
Weld County
AQI 41
Yuma County
AQI 11
Data Sources
http://www.airnow.gov/

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