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Colorado

United States

2026-09-20 10:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
45.5
PM10
μg/m³
7.9
NO2
μg/m³
13.3
PM2.5
μg/m³
2.4
CO
μg/m³
208.3
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
2℃
79%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 11
Alamosa County
AQI 13
Arapahoe County
AQI 21
Archuleta County
AQI 11
Baca County
AQI 3
Bent County
AQI 3
Boulder County
AQI 15
Broomfield County
AQI 8
Chaffee County
AQI 2
Cheyenne County
AQI 3
Clear Creek County
AQI 16
Conejos County
AQI 13
Costilla County
AQI 4
Crowley County
AQI 3
Custer County
AQI 3
Delta County
AQI 6
Denver County
AQI 12
Dolores County
AQI 3
Douglas County
AQI 14
Eagle County
AQI 4
El Paso County
AQI 17
Elbert County
AQI 13
Fremont County
AQI 5
Garfield County
AQI 13
Gilpin County
AQI 20
Grand County
AQI 3
Gunnison County
AQI 11
Hinsdale County
AQI 6
Huerfano County
AQI 3
Jackson County
AQI 3
Jefferson County
AQI 19
La Plata County
AQI 14
Lake County
AQI 2
Larimer County
AQI 12
Las Animas County
AQI 5
Lincoln County
AQI 2
Logan County
AQI 3
Mesa County
AQI 23
Mineral County
AQI 3
Moffat County
AQI 4
Montezuma County
AQI 20
Montrose County
AQI 6
Morgan County
AQI 3
Otero County
AQI 3
Ouray County
AQI 9
Park County
AQI 3
Phillips County
AQI 2
Pitkin County
AQI 5
Prowers County
AQI 11
Pueblo County
AQI 19
Rio Blanco County
AQI 6
Rio Grande County
AQI 13
Routt County
AQI 5
Saguache County
AQI 4
San Juan County
AQI 9
San Miguel County
AQI 9
Sedgwick County
AQI 2
Summit County
AQI 3
Teller County
AQI 4
Washington County
AQI 2
Weld County
AQI 13
Yuma County
AQI 3
Data Sources
http://www.airnow.gov/

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