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Colorado

United States

2026-05-31 11:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
80.9
PM10
μg/m³
10.4
NO2
μg/m³
17.5
PM2.5
μg/m³
3
CO
μg/m³
229.2
SO2
μg/m³
1.9
Weather
  • ℃
  • ℉
1℃
52%
7 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 18
Arapahoe County
AQI 31
Archuleta County
AQI 16
Baca County
AQI 10
Bent County
AQI 9
Boulder County
AQI 38
Broomfield County
AQI 16
Chaffee County
AQI 14
Cheyenne County
AQI 6
Clear Creek County
AQI 28
Conejos County
AQI 18
Costilla County
AQI 15
Crowley County
AQI 7
Custer County
AQI 10
Delta County
AQI 10
Denver County
AQI 23
Dolores County
AQI 13
Douglas County
AQI 23
Eagle County
AQI 10
El Paso County
AQI 27
Elbert County
AQI 20
Fremont County
AQI 8
Garfield County
AQI 17
Gilpin County
AQI 38
Grand County
AQI 5
Gunnison County
AQI 29
Hinsdale County
AQI 12
Huerfano County
AQI 10
Jackson County
AQI 7
Jefferson County
AQI 32
La Plata County
AQI 22
Lake County
AQI 14
Larimer County
AQI 26
Las Animas County
AQI 9
Lincoln County
AQI 7
Logan County
AQI 2
Mesa County
AQI 23
Mineral County
AQI 16
Moffat County
AQI 4
Montezuma County
AQI 31
Montrose County
AQI 10
Morgan County
AQI 7
Otero County
AQI 10
Ouray County
AQI 7
Park County
AQI 9
Phillips County
AQI 2
Pitkin County
AQI 37
Prowers County
AQI 14
Pueblo County
AQI 25
Rio Blanco County
AQI 4
Rio Grande County
AQI 18
Routt County
AQI 9
Saguache County
AQI 14
San Juan County
AQI 7
San Miguel County
AQI 7
Sedgwick County
AQI 2
Summit County
AQI 9
Teller County
AQI 4
Washington County
AQI 5
Weld County
AQI 23
Yuma County
AQI 3
Data Sources
http://www.airnow.gov/

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