Colorado
Translate
Banner with Colorado and CDPHE logos on left with text on right reading Colorado Air Quality with Department of Public Health and Environment on the next line.
Special Air Quality Statement
Wildfire smoke in southwest Colorado.

Click here for details.

Colorado Air Quality Summary

Avisos en Español
About the Air Quality Index (AQI)
Today's Air Quality Summary (detailed)
Air Quality Email Alerts		 Front Range Air Quality ForecastSmoke Outlook

Air Quality Advisories

Other Areas:

Air Quality Health Advisory for Wildfire Smoke

Avisos en Español para todo el Estado (Colorado)

Issued for Saguache, San Juan, Hinsdale, Mineral, Archuleta, Southern Mesa, Delta, Gunnison, Montrose, Ouray, San Miguel, Dolores, Montezuma, La Plata, Rio Grande and Conejos Counties
Issued at 8:26 AM MDT, Friday, July 11, 2025

Issued by the Colorado Department of Public Health and Environment


Affected Area: Saguache, San Juan, Hinsdale, Mineral, Archuleta, southern Mesa, Delta, Gunnison, Montrose, Ouray, San Miguel, Dolores, Montezuma, La Plata, Rio Grande and Conejos Counties. Locations include, but are not limited to Saguache, Silverton, Lake City, Creede, Pagosa (click for more...)

Key
Air Quality Index Scale

Visibility Standard Index

What is an Action Day?

Current - Air Quality Summary
install on your website... Current Air Quality Conditions
Highest AQI So Far Today


Denver's current visibility: Not Available
Ft. Collins' current visibility: Not Available
(VSI is calculated between 12PM and 4PM local time)


More about air quality forecasting regions...
Forecast - Air Quality Summary
Saturday Ozone Fine Particulates Carbon Monoxide Nitrogen Dioxide
   Denver - Boulder  Unhealthy for Sensitive Groups Moderate Good Good
   Colorado Springs  Moderate Moderate Good Not Available
   Ft. Collins  Unhealthy for Sensitive Groups Moderate Good Good
   Greeley  Unhealthy for Sensitive Groups Moderate Good Good
   Grand Junction  Moderate Moderate Not Available Not Available
   Pueblo  Moderate Moderate Not Available Not Available
   Aspen  Moderate Moderate Not Available Not Available
   Colorado River Valley  Moderate Moderate Not Available Not Available
   Four Corners Area  Moderate Unhealthy for Sensitive Groups Not Available Not Available
   Lamar  Not Available Moderate Not Available Not Available
   San Luis Valley  Not Available Moderate Not Available Not Available
   Steamboat Springs  Not Available Moderate Good Not Available
   Telluride  Not Available Unhealthy for Sensitive Groups Not Available Not Available
Sunday Ozone Fine Particulates Carbon Monoxide Nitrogen Dioxide
   Denver - Boulder 
   Colorado Springs 
   Ft. Collins 
   Greeley 
   Grand Junction 
   Pueblo 
   Aspen 
   Colorado River Valley 
   Four Corners Area 
   Lamar 
   San Luis Valley 
   Steamboat Springs 
   Telluride 

Denver's expected visibility (Saturday): Moderate
Denver's expected visibility (Sunday):

The AQI & VSI forecast for Sunday will be available by 4PM local time on Saturday.