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Colorado

United States

2026-09-24 22:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
90.2
PM10
μg/m³
20.8
PM2.5
μg/m³
3.1
NO2
μg/m³
6.1
CO
μg/m³
208.3
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
5℃
88%
12 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 50
Alamosa County
AQI 6
Arapahoe County
AQI 50
Archuleta County
AQI 21
Baca County
AQI 2
Bent County
AQI 3
Boulder County
AQI 35
Broomfield County
AQI 50
Chaffee County
AQI 5
Cheyenne County
AQI 1
Clear Creek County
AQI 29
Conejos County
AQI 6
Costilla County
AQI 2
Crowley County
AQI 3
Custer County
AQI 4
Delta County
AQI 10
Denver County
AQI 50
Dolores County
AQI 3
Douglas County
AQI 50
Eagle County
AQI 3
El Paso County
AQI 27
Elbert County
AQI 19
Fremont County
AQI 9
Garfield County
AQI 27
Gilpin County
AQI 33
Grand County
AQI 3
Gunnison County
AQI 23
Hinsdale County
AQI 5
Huerfano County
AQI 3
Jackson County
AQI 3
Jefferson County
AQI 46
La Plata County
AQI 26
Lake County
AQI 4
Larimer County
AQI 34
Las Animas County
AQI 2
Lincoln County
AQI 3
Logan County
AQI 8
Mesa County
AQI 27
Mineral County
AQI 2
Moffat County
AQI 3
Montezuma County
AQI 26
Montrose County
AQI 10
Morgan County
AQI 8
Otero County
AQI 3
Ouray County
AQI 8
Park County
AQI 7
Phillips County
AQI 4
Pitkin County
AQI 21
Prowers County
AQI 4
Pueblo County
AQI 29
Rio Blanco County
AQI 3
Rio Grande County
AQI 6
Routt County
AQI 9
Saguache County
AQI 3
San Juan County
AQI 8
San Miguel County
AQI 8
Sedgwick County
AQI 5
Summit County
AQI 5
Teller County
AQI 6
Washington County
AQI 5
Weld County
AQI 36
Yuma County
AQI 2
Data Sources
http://www.airnow.gov/

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AQI 29
Breckenridge
AQI 6
Silverthorne
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Frisco
AQI 4
Wildernest
AQI 4
Bailey
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