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  3. Colorado

Colorado

United States

2026-09-17 03:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
65.3
PM2.5
μg/m³
3.5
PM10
μg/m³
19.8
NO2
μg/m³
10.1
CO
μg/m³
250
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
6℃
97%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 36
Alamosa County
AQI 17
Arapahoe County
AQI 38
Archuleta County
AQI 18
Baca County
AQI 39
Bent County
AQI 25
Boulder County
AQI 34
Broomfield County
AQI 29
Chaffee County
AQI 19
Cheyenne County
AQI 23
Clear Creek County
AQI 28
Conejos County
AQI 15
Costilla County
AQI 13
Crowley County
AQI 21
Custer County
AQI 21
Delta County
AQI 18
Denver County
AQI 32
Dolores County
AQI 19
Douglas County
AQI 38
Eagle County
AQI 18
El Paso County
AQI 34
Elbert County
AQI 26
Fremont County
AQI 22
Garfield County
AQI 20
Gilpin County
AQI 26
Grand County
AQI 21
Gunnison County
AQI 15
Hinsdale County
AQI 11
Huerfano County
AQI 16
Jackson County
AQI 18
Jefferson County
AQI 28
La Plata County
AQI 33
Lake County
AQI 11
Larimer County
AQI 29
Las Animas County
AQI 19
Lincoln County
AQI 21
Logan County
AQI 22
Mesa County
AQI 29
Mineral County
AQI 24
Moffat County
AQI 17
Montezuma County
AQI 36
Montrose County
AQI 17
Morgan County
AQI 26
Otero County
AQI 24
Ouray County
AQI 14
Park County
AQI 22
Phillips County
AQI 25
Pitkin County
AQI 13
Prowers County
AQI 42
Pueblo County
AQI 48
Rio Blanco County
AQI 22
Rio Grande County
AQI 15
Routt County
AQI 14
Saguache County
AQI 25
San Juan County
AQI 14
San Miguel County
AQI 15
Sedgwick County
AQI 27
Summit County
AQI 16
Teller County
AQI 20
Washington County
AQI 24
Weld County
AQI 28
Yuma County
AQI 25
Data Sources
http://www.airnow.gov/

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Breckenridge
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Wildernest
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Bailey
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