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Colorado

United States

2026-06-21 09:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
74.4
PM10
μg/m³
22.9
PM2.5
μg/m³
6.4
NO2
μg/m³
8.9
CO
μg/m³
229.2
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
1℃
71%
9 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 23
Alamosa County
AQI 31
Arapahoe County
AQI 31
Archuleta County
AQI 21
Baca County
AQI 10
Bent County
AQI 24
Boulder County
AQI 17
Broomfield County
AQI 24
Chaffee County
AQI 4
Cheyenne County
AQI 19
Clear Creek County
AQI 25
Conejos County
AQI 31
Costilla County
AQI 9
Crowley County
AQI 13
Custer County
AQI 5
Delta County
AQI 21
Denver County
AQI 26
Dolores County
AQI 5
Douglas County
AQI 33
Eagle County
AQI 15
El Paso County
AQI 27
Elbert County
AQI 19
Fremont County
AQI 19
Garfield County
AQI 8
Gilpin County
AQI 23
Grand County
AQI 9
Gunnison County
AQI 32
Hinsdale County
AQI 18
Huerfano County
AQI 3
Jackson County
AQI 12
Jefferson County
AQI 26
La Plata County
AQI 25
Lake County
AQI 12
Larimer County
AQI 23
Las Animas County
AQI 3
Lincoln County
AQI 21
Logan County
AQI 14
Mesa County
AQI 31
Mineral County
AQI 5
Moffat County
AQI 12
Montezuma County
AQI 31
Montrose County
AQI 21
Morgan County
AQI 11
Otero County
AQI 15
Ouray County
AQI 15
Park County
AQI 6
Phillips County
AQI 14
Pitkin County
AQI 31
Prowers County
AQI 9
Pueblo County
AQI 29
Rio Blanco County
AQI 11
Rio Grande County
AQI 31
Routt County
AQI 59
Saguache County
AQI 8
San Juan County
AQI 15
San Miguel County
AQI 15
Sedgwick County
AQI 12
Summit County
AQI 12
Teller County
AQI 13
Washington County
AQI 19
Weld County
AQI 25
Yuma County
AQI 13
Data Sources
http://www.airnow.gov/

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AQI 16
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AQI 25
Breckenridge
AQI 13
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Wildernest
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Bailey
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