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Colorado

United States

2026-05-28 21:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
131.5
PM10
μg/m³
16.7
PM2.5
μg/m³
3.7
NO2
μg/m³
7.3
CO
μg/m³
250
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
10℃
65%
12 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 49
Alamosa County
AQI 16
Arapahoe County
AQI 41
Archuleta County
AQI 42
Baca County
AQI 4
Bent County
AQI 8
Boulder County
AQI 43
Broomfield County
AQI 23
Chaffee County
AQI 9
Cheyenne County
AQI 5
Clear Creek County
AQI 41
Conejos County
AQI 16
Costilla County
AQI 9
Crowley County
AQI 9
Custer County
AQI 9
Delta County
AQI 18
Denver County
AQI 48
Dolores County
AQI 5
Douglas County
AQI 47
Eagle County
AQI 10
El Paso County
AQI 30
Elbert County
AQI 25
Fremont County
AQI 18
Garfield County
AQI 39
Gilpin County
AQI 43
Grand County
AQI 7
Gunnison County
AQI 38
Hinsdale County
AQI 14
Huerfano County
AQI 7
Jackson County
AQI 7
Jefferson County
AQI 50
La Plata County
AQI 42
Lake County
AQI 10
Larimer County
AQI 41
Las Animas County
AQI 6
Lincoln County
AQI 4
Logan County
AQI 5
Mesa County
AQI 39
Mineral County
AQI 8
Moffat County
AQI 9
Montezuma County
AQI 41
Montrose County
AQI 18
Morgan County
AQI 3
Otero County
AQI 13
Ouray County
AQI 18
Park County
AQI 6
Phillips County
AQI 5
Pitkin County
AQI 37
Prowers County
AQI 6
Pueblo County
AQI 39
Rio Blanco County
AQI 8
Rio Grande County
AQI 16
Routt County
AQI 15
Saguache County
AQI 9
San Juan County
AQI 18
San Miguel County
AQI 18
Sedgwick County
AQI 5
Summit County
AQI 8
Teller County
AQI 9
Washington County
AQI 5
Weld County
AQI 40
Yuma County
AQI 6
Data Sources
http://www.airnow.gov/

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