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Colorado

United States

2026-09-18 09:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
3.5
O3
μg/m³
35.5
PM10
μg/m³
10.6
NO2
μg/m³
16.5
CO
μg/m³
291.7
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
6℃
97%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 25
Alamosa County
AQI 12
Arapahoe County
AQI 25
Archuleta County
AQI 18
Baca County
AQI 42
Bent County
AQI 50
Boulder County
AQI 15
Broomfield County
AQI 24
Chaffee County
AQI 10
Cheyenne County
AQI 35
Clear Creek County
AQI 17
Conejos County
AQI 12
Costilla County
AQI 12
Crowley County
AQI 32
Custer County
AQI 13
Delta County
AQI 20
Denver County
AQI 27
Dolores County
AQI 6
Douglas County
AQI 22
Eagle County
AQI 27
El Paso County
AQI 30
Elbert County
AQI 34
Fremont County
AQI 13
Garfield County
AQI 2
Gilpin County
AQI 22
Grand County
AQI 15
Gunnison County
AQI 15
Hinsdale County
AQI 8
Huerfano County
AQI 11
Jackson County
AQI 16
Jefferson County
AQI 22
La Plata County
AQI 24
Lake County
AQI 9
Larimer County
AQI 25
Las Animas County
AQI 29
Lincoln County
AQI 32
Logan County
AQI 21
Mesa County
AQI 14
Mineral County
AQI 4
Moffat County
AQI 8
Montezuma County
AQI 19
Montrose County
AQI 20
Morgan County
AQI 41
Otero County
AQI 47
Ouray County
AQI 13
Park County
AQI 13
Phillips County
AQI 24
Pitkin County
AQI 4
Prowers County
AQI 45
Pueblo County
AQI 26
Rio Blanco County
AQI 14
Rio Grande County
AQI 12
Routt County
AQI 12
Saguache County
AQI 14
San Juan County
AQI 13
San Miguel County
AQI 13
Sedgwick County
AQI 26
Summit County
AQI 17
Teller County
AQI 22
Washington County
AQI 27
Weld County
AQI 26
Yuma County
AQI 31
Data Sources
http://www.airnow.gov/

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Breckenridge
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Frisco
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Wildernest
AQI 18
Bailey
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Winter Park
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