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Colorado

United States

2026-09-19 12:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
37.7
PM10
μg/m³
9.2
NO2
μg/m³
17.3
PM2.5
μg/m³
2.8
CO
μg/m³
229.2
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
4℃
85%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 22
Alamosa County
AQI 8
Arapahoe County
AQI 19
Archuleta County
AQI 8
Baca County
AQI 7
Bent County
AQI 7
Boulder County
AQI 11
Broomfield County
AQI 17
Chaffee County
AQI 2
Cheyenne County
AQI 5
Clear Creek County
AQI 14
Conejos County
AQI 5
Costilla County
AQI 5
Crowley County
AQI 6
Custer County
AQI 4
Delta County
AQI 9
Denver County
AQI 17
Dolores County
AQI 3
Douglas County
AQI 17
Eagle County
AQI 2
El Paso County
AQI 16
Elbert County
AQI 11
Fremont County
AQI 5
Garfield County
AQI 15
Gilpin County
AQI 17
Grand County
AQI 3
Gunnison County
AQI 6
Hinsdale County
AQI 3
Huerfano County
AQI 3
Jackson County
AQI 3
Jefferson County
AQI 15
La Plata County
AQI 11
Lake County
AQI 2
Larimer County
AQI 13
Las Animas County
AQI 3
Lincoln County
AQI 7
Logan County
AQI 7
Mesa County
AQI 20
Mineral County
AQI 4
Moffat County
AQI 5
Montezuma County
AQI 17
Montrose County
AQI 9
Morgan County
AQI 13
Otero County
AQI 7
Ouray County
AQI 4
Park County
AQI 3
Phillips County
AQI 5
Pitkin County
AQI 12
Prowers County
AQI 9
Pueblo County
AQI 15
Rio Blanco County
AQI 4
Rio Grande County
AQI 5
Routt County
AQI 6
Saguache County
AQI 4
San Juan County
AQI 4
San Miguel County
AQI 5
Sedgwick County
AQI 4
Summit County
AQI 3
Teller County
AQI 5
Washington County
AQI 7
Weld County
AQI 11
Yuma County
AQI 6
Data Sources
http://www.airnow.gov/

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