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Colorado

United States

2026-09-22 21:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
100.4
PM10
μg/m³
22.3
PM2.5
μg/m³
3.3
NO2
μg/m³
7.4
CO
μg/m³
229.2
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
9℃
59%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 35
Alamosa County
AQI 41
Arapahoe County
AQI 33
Archuleta County
AQI 28
Baca County
AQI 7
Bent County
AQI 16
Boulder County
AQI 34
Broomfield County
AQI 25
Chaffee County
AQI 3
Cheyenne County
AQI 6
Clear Creek County
AQI 32
Conejos County
AQI 41
Costilla County
AQI 5
Crowley County
AQI 7
Custer County
AQI 6
Delta County
AQI 23
Denver County
AQI 32
Dolores County
AQI 3
Douglas County
AQI 33
Eagle County
AQI 3
El Paso County
AQI 36
Elbert County
AQI 21
Fremont County
AQI 13
Garfield County
AQI 25
Gilpin County
AQI 27
Grand County
AQI 3
Gunnison County
AQI 28
Hinsdale County
AQI 10
Huerfano County
AQI 2
Jackson County
AQI 4
Jefferson County
AQI 34
La Plata County
AQI 28
Lake County
AQI 2
Larimer County
AQI 39
Las Animas County
AQI 3
Lincoln County
AQI 9
Logan County
AQI 3
Mesa County
AQI 28
Mineral County
AQI 3
Moffat County
AQI 4
Montezuma County
AQI 29
Montrose County
AQI 23
Morgan County
AQI 3
Otero County
AQI 8
Ouray County
AQI 22
Park County
AQI 3
Phillips County
AQI 4
Pitkin County
AQI 20
Prowers County
AQI 19
Pueblo County
AQI 33
Rio Blanco County
AQI 4
Rio Grande County
AQI 41
Routt County
AQI 7
Saguache County
AQI 5
San Juan County
AQI 22
San Miguel County
AQI 22
Sedgwick County
AQI 4
Summit County
AQI 4
Teller County
AQI 5
Washington County
AQI 4
Weld County
AQI 39
Yuma County
AQI 4
Data Sources
http://www.airnow.gov/

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