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Colorado

United States

2026-06-04 10:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
65.5
PM10
μg/m³
12
NO2
μg/m³
16.3
PM2.5
μg/m³
3.8
CO
μg/m³
208.3
SO2
μg/m³
1.9
Weather
  • ℃
  • ℉
3℃
55%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 16
Alamosa County
AQI 17
Arapahoe County
AQI 28
Archuleta County
AQI 19
Baca County
AQI 11
Bent County
AQI 30
Boulder County
AQI 17
Broomfield County
AQI 13
Chaffee County
AQI 5
Cheyenne County
AQI 9
Clear Creek County
AQI 23
Conejos County
AQI 15
Costilla County
AQI 5
Crowley County
AQI 13
Custer County
AQI 5
Delta County
AQI 18
Denver County
AQI 20
Dolores County
AQI 3
Douglas County
AQI 10
Eagle County
AQI 7
El Paso County
AQI 12
Elbert County
AQI 16
Fremont County
AQI 9
Garfield County
AQI 18
Gilpin County
AQI 28
Grand County
AQI 6
Gunnison County
AQI 27
Hinsdale County
AQI 7
Huerfano County
AQI 4
Jackson County
AQI 5
Jefferson County
AQI 28
La Plata County
AQI 26
Lake County
AQI 6
Larimer County
AQI 17
Las Animas County
AQI 5
Lincoln County
AQI 11
Logan County
AQI 8
Mesa County
AQI 24
Mineral County
AQI 4
Moffat County
AQI 8
Montezuma County
AQI 31
Montrose County
AQI 18
Morgan County
AQI 9
Otero County
AQI 15
Ouray County
AQI 10
Park County
AQI 7
Phillips County
AQI 8
Pitkin County
AQI 26
Prowers County
AQI 4
Pueblo County
AQI 16
Rio Blanco County
AQI 9
Rio Grande County
AQI 15
Routt County
AQI 9
Saguache County
AQI 5
San Juan County
AQI 10
San Miguel County
AQI 10
Sedgwick County
AQI 8
Summit County
AQI 7
Teller County
AQI 7
Washington County
AQI 8
Weld County
AQI 16
Yuma County
AQI 8
Data Sources
http://www.airnow.gov/

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