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Colorado

United States

2026-05-31 15:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
111.3
PM10
μg/m³
9.1
PM2.5
μg/m³
2.4
NO2
μg/m³
5.5
CO
μg/m³
166.7
SO2
μg/m³
1.2
Weather
  • ℃
  • ℉
8℃
33%
20 kph
6 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 37
Alamosa County
AQI 11
Arapahoe County
AQI 41
Archuleta County
AQI 37
Baca County
AQI 9
Bent County
AQI 9
Boulder County
AQI 35
Broomfield County
AQI 7
Chaffee County
AQI 18
Cheyenne County
AQI 6
Clear Creek County
AQI 32
Conejos County
AQI 11
Costilla County
AQI 14
Crowley County
AQI 10
Custer County
AQI 15
Delta County
AQI 12
Denver County
AQI 35
Dolores County
AQI 15
Douglas County
AQI 36
Eagle County
AQI 11
El Paso County
AQI 36
Elbert County
AQI 23
Fremont County
AQI 9
Garfield County
AQI 27
Gilpin County
AQI 37
Grand County
AQI 8
Gunnison County
AQI 29
Hinsdale County
AQI 13
Huerfano County
AQI 15
Jackson County
AQI 7
Jefferson County
AQI 40
La Plata County
AQI 33
Lake County
AQI 16
Larimer County
AQI 34
Las Animas County
AQI 14
Lincoln County
AQI 11
Logan County
AQI 4
Mesa County
AQI 27
Mineral County
AQI 14
Moffat County
AQI 10
Montezuma County
AQI 38
Montrose County
AQI 12
Morgan County
AQI 10
Otero County
AQI 11
Ouray County
AQI 9
Park County
AQI 15
Phillips County
AQI 3
Pitkin County
AQI 34
Prowers County
AQI 21
Pueblo County
AQI 40
Rio Blanco County
AQI 11
Rio Grande County
AQI 11
Routt County
AQI 7
Saguache County
AQI 17
San Juan County
AQI 9
San Miguel County
AQI 9
Sedgwick County
AQI 4
Summit County
AQI 12
Teller County
AQI 4
Washington County
AQI 7
Weld County
AQI 37
Yuma County
AQI 3
Data Sources
http://www.airnow.gov/

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