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Colorado

United States

2026-05-28 15:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
77.4
PM10
μg/m³
18.8
PM2.5
μg/m³
5.1
NO2
μg/m³
14.7
CO
μg/m³
270.8
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
9℃
70%
4 kph
5 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 26
Alamosa County
AQI 9
Arapahoe County
AQI 30
Archuleta County
AQI 34
Baca County
AQI 2
Bent County
AQI 2
Boulder County
AQI 18
Broomfield County
AQI 24
Chaffee County
AQI 4
Cheyenne County
AQI 3
Clear Creek County
AQI 24
Conejos County
AQI 9
Costilla County
AQI 5
Crowley County
AQI 1
Custer County
AQI 8
Delta County
AQI 30
Denver County
AQI 22
Dolores County
AQI 5
Douglas County
AQI 23
Eagle County
AQI 5
El Paso County
AQI 24
Elbert County
AQI 18
Fremont County
AQI 27
Garfield County
AQI 25
Gilpin County
AQI 31
Grand County
AQI 4
Gunnison County
AQI 23
Hinsdale County
AQI 17
Huerfano County
AQI 4
Jackson County
AQI 3
Jefferson County
AQI 24
La Plata County
AQI 30
Lake County
AQI 5
Larimer County
AQI 23
Las Animas County
AQI 2
Lincoln County
AQI 2
Logan County
AQI 6
Mesa County
AQI 28
Mineral County
AQI 6
Moffat County
AQI 6
Montezuma County
AQI 32
Montrose County
AQI 30
Morgan County
AQI 3
Otero County
AQI 1
Ouray County
AQI 29
Park County
AQI 3
Phillips County
AQI 7
Pitkin County
AQI 25
Prowers County
AQI 9
Pueblo County
AQI 25
Rio Blanco County
AQI 6
Rio Grande County
AQI 9
Routt County
AQI 16
Saguache County
AQI 5
San Juan County
AQI 29
San Miguel County
AQI 29
Sedgwick County
AQI 6
Summit County
AQI 6
Teller County
AQI 9
Washington County
AQI 5
Weld County
AQI 19
Yuma County
AQI 7
Data Sources
http://www.airnow.gov/

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