1. North America
  2. United States
  3. Colorado

Colorado

United States

2026-05-29 15:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
80.3
PM2.5
μg/m³
5.6
PM10
μg/m³
20.3
NO2
μg/m³
13.5
CO
μg/m³
270.8
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
11℃
29%
5 kph
5 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 41
Alamosa County
AQI 22
Arapahoe County
AQI 41
Archuleta County
AQI 38
Baca County
AQI 25
Bent County
AQI 36
Boulder County
AQI 41
Broomfield County
AQI 38
Chaffee County
AQI 13
Cheyenne County
AQI 18
Clear Creek County
AQI 33
Conejos County
AQI 22
Costilla County
AQI 14
Crowley County
AQI 38
Custer County
AQI 20
Delta County
AQI 29
Denver County
AQI 51
Dolores County
AQI 20
Douglas County
AQI 40
Eagle County
AQI 13
El Paso County
AQI 45
Elbert County
AQI 26
Fremont County
AQI 44
Garfield County
AQI 38
Gilpin County
AQI 41
Grand County
AQI 13
Gunnison County
AQI 40
Hinsdale County
AQI 18
Huerfano County
AQI 15
Jackson County
AQI 16
Jefferson County
AQI 33
La Plata County
AQI 32
Lake County
AQI 12
Larimer County
AQI 45
Las Animas County
AQI 22
Lincoln County
AQI 27
Logan County
AQI 19
Mesa County
AQI 79
Mineral County
AQI 17
Moffat County
AQI 20
Montezuma County
AQI 49
Montrose County
AQI 29
Morgan County
AQI 23
Otero County
AQI 40
Ouray County
AQI 19
Park County
AQI 17
Phillips County
AQI 17
Pitkin County
AQI 36
Prowers County
AQI 29
Pueblo County
AQI 48
Rio Blanco County
AQI 19
Rio Grande County
AQI 22
Routt County
AQI 20
Saguache County
AQI 15
San Juan County
AQI 19
San Miguel County
AQI 19
Sedgwick County
AQI 14
Summit County
AQI 14
Teller County
AQI 45
Washington County
AQI 19
Weld County
AQI 41
Yuma County
AQI 17
Data Sources
http://www.airnow.gov/

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Keystone
AQI 21
Georgetown
AQI 34
Breckenridge
AQI 15
Silverthorne
AQI 14
Frisco
AQI 13
Wildernest
AQI 13
Bailey
AQI 26
Idaho Springs
AQI 32
Copper Mountain
AQI 13
Black Hawk
AQI 41
Winter Park
AQI 21