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Colorado

United States

2026-05-29 22:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
44.5
O3
μg/m³
124.2
PM2.5
μg/m³
3.8
NO2
μg/m³
4.7
CO
μg/m³
145.8
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
12℃
38%
20 kph
3 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 102
Alamosa County
AQI 16
Arapahoe County
AQI 41
Archuleta County
AQI 43
Baca County
AQI 16
Bent County
AQI 27
Boulder County
AQI 61
Broomfield County
AQI 142
Chaffee County
AQI 4
Cheyenne County
AQI 9
Clear Creek County
AQI 38
Conejos County
AQI 81
Costilla County
AQI 18
Crowley County
AQI 8
Custer County
AQI 6
Delta County
AQI 21
Denver County
AQI 38
Dolores County
AQI 5
Douglas County
AQI 39
Eagle County
AQI 4
El Paso County
AQI 38
Elbert County
AQI 25
Fremont County
AQI 17
Garfield County
AQI 40
Gilpin County
AQI 65
Grand County
AQI 5
Gunnison County
AQI 39
Hinsdale County
AQI 11
Huerfano County
AQI 4
Jackson County
AQI 5
Jefferson County
AQI 40
La Plata County
AQI 42
Lake County
AQI 4
Larimer County
AQI 36
Las Animas County
AQI 4
Lincoln County
AQI 11
Logan County
AQI 6
Mesa County
AQI 43
Mineral County
AQI 6
Moffat County
AQI 6
Montezuma County
AQI 40
Montrose County
AQI 26
Morgan County
AQI 8
Otero County
AQI 9
Ouray County
AQI 18
Park County
AQI 4
Phillips County
AQI 5
Pitkin County
AQI 36
Prowers County
AQI 21
Pueblo County
AQI 39
Rio Blanco County
AQI 6
Rio Grande County
AQI 81
Routt County
AQI 7
Saguache County
AQI 17
San Juan County
AQI 18
San Miguel County
AQI 17
Sedgwick County
AQI 5
Summit County
AQI 8
Teller County
AQI 5
Washington County
AQI 7
Weld County
AQI 40
Yuma County
AQI 6
Data Sources
http://www.airnow.gov/

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