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Colorado

United States

2026-06-04 05:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
82.5
PM10
μg/m³
16.8
NO2
μg/m³
18.3
PM2.5
μg/m³
3.8
CO
μg/m³
208.3
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
4℃
62%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 20
Alamosa County
AQI 19
Arapahoe County
AQI 29
Archuleta County
AQI 28
Baca County
AQI 15
Bent County
AQI 42
Boulder County
AQI 22
Broomfield County
AQI 18
Chaffee County
AQI 4
Cheyenne County
AQI 7
Clear Creek County
AQI 27
Conejos County
AQI 19
Costilla County
AQI 4
Crowley County
AQI 16
Custer County
AQI 5
Delta County
AQI 28
Denver County
AQI 26
Dolores County
AQI 3
Douglas County
AQI 35
Eagle County
AQI 7
El Paso County
AQI 15
Elbert County
AQI 18
Fremont County
AQI 13
Garfield County
AQI 26
Gilpin County
AQI 29
Grand County
AQI 6
Gunnison County
AQI 31
Hinsdale County
AQI 9
Huerfano County
AQI 4
Jackson County
AQI 5
Jefferson County
AQI 29
La Plata County
AQI 31
Lake County
AQI 5
Larimer County
AQI 21
Las Animas County
AQI 4
Lincoln County
AQI 10
Logan County
AQI 7
Mesa County
AQI 29
Mineral County
AQI 4
Moffat County
AQI 7
Montezuma County
AQI 30
Montrose County
AQI 28
Morgan County
AQI 8
Otero County
AQI 19
Ouray County
AQI 14
Park County
AQI 6
Phillips County
AQI 7
Pitkin County
AQI 27
Prowers County
AQI 7
Pueblo County
AQI 27
Rio Blanco County
AQI 8
Rio Grande County
AQI 19
Routt County
AQI 14
Saguache County
AQI 5
San Juan County
AQI 14
San Miguel County
AQI 14
Sedgwick County
AQI 7
Summit County
AQI 7
Teller County
AQI 6
Washington County
AQI 8
Weld County
AQI 23
Yuma County
AQI 7
Data Sources
http://www.airnow.gov/

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