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Colorado

United States

2026-06-02 04:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
101.2
PM10
μg/m³
18.9
PM2.5
μg/m³
4
NO2
μg/m³
11.2
CO
μg/m³
125
SO2
μg/m³
0.9
Weather
  • ℃
  • ℉
6℃
47%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 36
Alamosa County
AQI 20
Arapahoe County
AQI 36
Archuleta County
AQI 23
Baca County
AQI 31
Bent County
AQI 81
Boulder County
AQI 28
Broomfield County
AQI 19
Chaffee County
AQI 3
Cheyenne County
AQI 8
Clear Creek County
AQI 31
Conejos County
AQI 20
Costilla County
AQI 8
Crowley County
AQI 61
Custer County
AQI 11
Delta County
AQI 45
Denver County
AQI 36
Dolores County
AQI 4
Douglas County
AQI 31
Eagle County
AQI 4
El Paso County
AQI 30
Elbert County
AQI 22
Fremont County
AQI 16
Garfield County
AQI 25
Gilpin County
AQI 36
Grand County
AQI 5
Gunnison County
AQI 34
Hinsdale County
AQI 10
Huerfano County
AQI 17
Jackson County
AQI 5
Jefferson County
AQI 31
La Plata County
AQI 29
Lake County
AQI 4
Larimer County
AQI 35
Las Animas County
AQI 18
Lincoln County
AQI 7
Logan County
AQI 9
Mesa County
AQI 37
Mineral County
AQI 4
Moffat County
AQI 5
Montezuma County
AQI 30
Montrose County
AQI 45
Morgan County
AQI 6
Otero County
AQI 98
Ouray County
AQI 16
Park County
AQI 5
Phillips County
AQI 9
Pitkin County
AQI 29
Prowers County
AQI 16
Pueblo County
AQI 36
Rio Blanco County
AQI 8
Rio Grande County
AQI 20
Routt County
AQI 12
Saguache County
AQI 8
San Juan County
AQI 16
San Miguel County
AQI 16
Sedgwick County
AQI 8
Summit County
AQI 6
Teller County
AQI 6
Washington County
AQI 7
Weld County
AQI 36
Yuma County
AQI 9
Data Sources
http://www.airnow.gov/

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