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Special Air Quality Statement
Air Quality Health Advisories for Wildfire Smoke in effect for large parts of western and southern Colorado

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Colorado Air Quality Summary

Avisos en Español
About the Air Quality Index (AQI)
Today's Air Quality Summary (detailed)
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Air Quality Advisories

Other Areas:


Air Quality Health Advisory for Wildfire Smoke

Avisos en Español para todo el Estado (Colorado)

Issued for Delta, Montrose, San Miguel, Ouray, Dolores, Gunnison, San Juan, Hinsdale, Mineral, Chaffee, Saguache, Rio Grande, Alamosa, Fremont, Custer, Pueblo, Lake, and Park Counties
Issued at 7:52 AM MDT, Saturday, July 4, 2026

Issued by the Colorado Department of Public Health and Environment


Affected Area: Delta, Montrose, San Miguel, Ouray, Dolores, Gunnison, San Juan, Hinsdale, Mineral, Chaffee, Saguache, Rio Grande, Alamosa, Fremont, Custer, Pueblo, Lake, and Park Counties. Locations include, but are not (click for more...)

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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  Moderate Moderate Good Good
   Greeley  Unhealthy for Sensitive Groups Moderate Good Good
   Grand Junction  Moderate Moderate Not Available Not Available
   Pueblo  Moderate Unhealthy for Sensitive Groups Not Available Not Available
   Aspen  Moderate Moderate Not Available Not Available
   Colorado River Valley  Moderate Moderate Not Available Not Available
   Four Corners Area  Moderate Moderate Not Available Not Available
   Lamar  Not Available Moderate Not Available Not Available
   San Luis Valley  Not Available Unhealthy for Sensitive Groups Not Available Not Available
   Steamboat Springs  Not Available Good Not Available Not Available
   Telluride  Not Available Unhealthy for Sensitive Groups Not Available Not Available
Sunday 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 Unhealthy for Sensitive Groups Not Available Not Available
   Aspen  Moderate Moderate Not Available Not Available
   Colorado River Valley  Moderate Moderate Not Available Not Available
   Four Corners Area  Moderate Moderate Not Available Not Available
   Lamar  Not Available Good Not Available Not Available
   San Luis Valley  Not Available Unhealthy for Sensitive Groups Not Available Not Available
   Steamboat Springs  Not Available Good Not Available Not Available
   Telluride  Not Available Unhealthy for Sensitive Groups Not Available Not Available

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