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  3. Colorado

Colorado

United States

2026-09-19 01:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
72
PM2.5
μg/m³
2.8
PM10
μg/m³
12
NO2
μg/m³
12.8
CO
μg/m³
250
SO2
μg/m³
1
Weather
  • ℃
  • ℉
6℃
81%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 31
Alamosa County
AQI 12
Arapahoe County
AQI 37
Archuleta County
AQI 23
Baca County
AQI 25
Bent County
AQI 13
Boulder County
AQI 38
Broomfield County
AQI 15
Chaffee County
AQI 4
Cheyenne County
AQI 14
Clear Creek County
AQI 36
Conejos County
AQI 12
Costilla County
AQI 7
Crowley County
AQI 7
Custer County
AQI 6
Delta County
AQI 17
Denver County
AQI 32
Dolores County
AQI 7
Douglas County
AQI 31
Eagle County
AQI 7
El Paso County
AQI 39
Elbert County
AQI 27
Fremont County
AQI 16
Garfield County
AQI 10
Gilpin County
AQI 31
Grand County
AQI 4
Gunnison County
AQI 26
Hinsdale County
AQI 15
Huerfano County
AQI 4
Jackson County
AQI 5
Jefferson County
AQI 34
La Plata County
AQI 34
Lake County
AQI 5
Larimer County
AQI 41
Las Animas County
AQI 11
Lincoln County
AQI 11
Logan County
AQI 8
Mesa County
AQI 36
Mineral County
AQI 8
Moffat County
AQI 4
Montezuma County
AQI 40
Montrose County
AQI 17
Morgan County
AQI 13
Otero County
AQI 12
Ouray County
AQI 24
Park County
AQI 5
Phillips County
AQI 9
Pitkin County
AQI 26
Prowers County
AQI 19
Pueblo County
AQI 28
Rio Blanco County
AQI 5
Rio Grande County
AQI 12
Routt County
AQI 21
Saguache County
AQI 8
San Juan County
AQI 24
San Miguel County
AQI 24
Sedgwick County
AQI 9
Summit County
AQI 7
Teller County
AQI 12
Washington County
AQI 7
Weld County
AQI 34
Yuma County
AQI 8
Data Sources
http://www.airnow.gov/

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