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Colorado

United States

2026-05-31 06:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
98.9
PM10
μg/m³
10.5
NO2
μg/m³
14.1
PM2.5
μg/m³
2.8
CO
μg/m³
354.2
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
1℃
58%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 33
Alamosa County
AQI 16
Arapahoe County
AQI 37
Archuleta County
AQI 23
Baca County
AQI 10
Bent County
AQI 15
Boulder County
AQI 37
Broomfield County
AQI 11
Chaffee County
AQI 12
Cheyenne County
AQI 7
Clear Creek County
AQI 32
Conejos County
AQI 16
Costilla County
AQI 13
Crowley County
AQI 14
Custer County
AQI 11
Delta County
AQI 7
Denver County
AQI 27
Dolores County
AQI 16
Douglas County
AQI 29
Eagle County
AQI 8
El Paso County
AQI 31
Elbert County
AQI 20
Fremont County
AQI 6
Garfield County
AQI 25
Gilpin County
AQI 37
Grand County
AQI 6
Gunnison County
AQI 33
Hinsdale County
AQI 13
Huerfano County
AQI 10
Jackson County
AQI 3
Jefferson County
AQI 35
La Plata County
AQI 27
Lake County
AQI 12
Larimer County
AQI 32
Las Animas County
AQI 9
Lincoln County
AQI 7
Logan County
AQI 6
Mesa County
AQI 29
Mineral County
AQI 16
Moffat County
AQI 3
Montezuma County
AQI 33
Montrose County
AQI 7
Morgan County
AQI 6
Otero County
AQI 19
Ouray County
AQI 9
Park County
AQI 8
Phillips County
AQI 6
Pitkin County
AQI 35
Prowers County
AQI 17
Pueblo County
AQI 37
Rio Blanco County
AQI 3
Rio Grande County
AQI 16
Routt County
AQI 8
Saguache County
AQI 13
San Juan County
AQI 9
San Miguel County
AQI 9
Sedgwick County
AQI 6
Summit County
AQI 9
Teller County
AQI 4
Washington County
AQI 6
Weld County
AQI 30
Yuma County
AQI 5
Data Sources
http://www.airnow.gov/

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