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Colorado

United States

2026-05-31 22:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
133.5
PM10
μg/m³
12.6
PM2.5
μg/m³
2.9
CO
μg/m³
145.8
NO2
μg/m³
2.6
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
14℃
22%
17 kph
4 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • CO
  • NO2
  • SO2
Places included
Adams County
AQI 43
Alamosa County
AQI 24
Arapahoe County
AQI 45
Archuleta County
AQI 47
Baca County
AQI 12
Bent County
AQI 17
Boulder County
AQI 37
Broomfield County
AQI 10
Chaffee County
AQI 8
Cheyenne County
AQI 14
Clear Creek County
AQI 40
Conejos County
AQI 24
Costilla County
AQI 11
Crowley County
AQI 15
Custer County
AQI 10
Delta County
AQI 10
Denver County
AQI 44
Dolores County
AQI 9
Douglas County
AQI 43
Eagle County
AQI 7
El Paso County
AQI 43
Elbert County
AQI 28
Fremont County
AQI 11
Garfield County
AQI 41
Gilpin County
AQI 39
Grand County
AQI 6
Gunnison County
AQI 43
Hinsdale County
AQI 12
Huerfano County
AQI 9
Jackson County
AQI 6
Jefferson County
AQI 44
La Plata County
AQI 45
Lake County
AQI 8
Larimer County
AQI 38
Las Animas County
AQI 11
Lincoln County
AQI 14
Logan County
AQI 9
Mesa County
AQI 41
Mineral County
AQI 10
Moffat County
AQI 7
Montezuma County
AQI 40
Montrose County
AQI 10
Morgan County
AQI 12
Otero County
AQI 16
Ouray County
AQI 16
Park County
AQI 9
Phillips County
AQI 12
Pitkin County
AQI 38
Prowers County
AQI 10
Pueblo County
AQI 42
Rio Blanco County
AQI 7
Rio Grande County
AQI 24
Routt County
AQI 6
Saguache County
AQI 11
San Juan County
AQI 16
San Miguel County
AQI 16
Sedgwick County
AQI 10
Summit County
AQI 7
Teller County
AQI 6
Washington County
AQI 14
Weld County
AQI 41
Yuma County
AQI 14
Data Sources
http://www.airnow.gov/

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