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Colorado

United States

2026-05-28 20:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
131.5
PM10
μg/m³
16.9
PM2.5
μg/m³
3.6
NO2
μg/m³
7
CO
μg/m³
229.2
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
9℃
51%
14 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 48
Alamosa County
AQI 15
Arapahoe County
AQI 41
Archuleta County
AQI 45
Baca County
AQI 5
Bent County
AQI 11
Boulder County
AQI 42
Broomfield County
AQI 26
Chaffee County
AQI 8
Cheyenne County
AQI 5
Clear Creek County
AQI 39
Conejos County
AQI 15
Costilla County
AQI 8
Crowley County
AQI 8
Custer County
AQI 8
Delta County
AQI 17
Denver County
AQI 45
Dolores County
AQI 5
Douglas County
AQI 45
Eagle County
AQI 10
El Paso County
AQI 32
Elbert County
AQI 24
Fremont County
AQI 16
Garfield County
AQI 40
Gilpin County
AQI 41
Grand County
AQI 7
Gunnison County
AQI 41
Hinsdale County
AQI 13
Huerfano County
AQI 6
Jackson County
AQI 7
Jefferson County
AQI 47
La Plata County
AQI 45
Lake County
AQI 9
Larimer County
AQI 39
Las Animas County
AQI 5
Lincoln County
AQI 3
Logan County
AQI 5
Mesa County
AQI 40
Mineral County
AQI 8
Moffat County
AQI 8
Montezuma County
AQI 43
Montrose County
AQI 17
Morgan County
AQI 3
Otero County
AQI 11
Ouray County
AQI 20
Park County
AQI 6
Phillips County
AQI 5
Pitkin County
AQI 38
Prowers County
AQI 7
Pueblo County
AQI 38
Rio Blanco County
AQI 8
Rio Grande County
AQI 15
Routt County
AQI 13
Saguache County
AQI 9
San Juan County
AQI 20
San Miguel County
AQI 20
Sedgwick County
AQI 5
Summit County
AQI 7
Teller County
AQI 8
Washington County
AQI 5
Weld County
AQI 39
Yuma County
AQI 6
Data Sources
http://www.airnow.gov/

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