1. North America
  2. United States
  3. Colorado

Colorado

United States

2025-12-29 06:00
AQI (UK)
Low
Pollutants|Pollens
O3
μg/m³
62.5
PM10
μg/m³
17
PM2.5
μg/m³
6.3
NO2
μg/m³
22.7
SO2
μg/m³
0.1
Weather
  • ℃
  • ℉
-16℃
48%
12 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (UK)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • SO2
Places included
Adams County
AQI 2
Alamosa County
AQI 4
Arapahoe County
AQI 3
Archuleta County
AQI 1
Baca County
AQI 1
Bent County
AQI 1
Boulder County
AQI 2
Broomfield County
AQI 2
Chaffee County
AQI 1
Cheyenne County
AQI 2
Clear Creek County
AQI 1
Conejos County
AQI 4
Costilla County
AQI 1
Crowley County
AQI 1
Custer County
AQI 1
Delta County
AQI 2
Denver County
AQI 2
Dolores County
AQI 1
Douglas County
AQI 3
Eagle County
AQI 3
El Paso County
AQI 2
Elbert County
AQI 2
Fremont County
AQI 1
Garfield County
AQI 1
Gilpin County
AQI 4
Grand County
AQI 1
Gunnison County
AQI 3
Hinsdale County
AQI 2
Huerfano County
AQI 1
Jackson County
AQI 1
Jefferson County
AQI 3
La Plata County
AQI 2
Lake County
AQI 3
Larimer County
AQI 3
Las Animas County
AQI 1
Lincoln County
AQI 1
Logan County
AQI 1
Mesa County
AQI 3
Mineral County
AQI 2
Moffat County
AQI 2
Montezuma County
AQI 2
Montrose County
AQI 2
Morgan County
AQI 1
Otero County
AQI 1
Ouray County
AQI 1
Park County
AQI 1
Phillips County
AQI 1
Pitkin County
AQI 3
Prowers County
AQI 1
Pueblo County
AQI 2
Rio Blanco County
AQI 2
Rio Grande County
AQI 4
Routt County
AQI 1
Saguache County
AQI 1
San Juan County
AQI 1
San Miguel County
AQI 1
Sedgwick County
AQI 1
Summit County
AQI 3
Teller County
AQI 1
Washington County
AQI 1
Weld County
AQI 2
Yuma County
AQI 1
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 1
Georgetown
AQI 1
Breckenridge
AQI 3
Silverthorne
AQI 3
Frisco
AQI 3
Wildernest
AQI 3
Bailey
AQI 1
Idaho Springs
AQI 1
Copper Mountain
AQI 3
Black Hawk
AQI 4
Winter Park
AQI 1