smoggy mountains 

Air Quality Action Days

The Colorado Department of Public Health and Environment (CDPHE), Air Pollution Control Division determines the air pollution forecast daily. 

Action Days

  • Poor weather conditions are expected to cause air quality standards to be exceeded in any or all of the following: carbon monoxide, fine particulate matter (PM-10) and visibility. 
  • Residential wood burning is prohibited except in uses defined in Regulation 4.

No Action Days

  • Wood burning is permitted. 

Air Quality Advisories are updated daily at 4:00 p.m. and remain in effect until the next update. Call 303-758-4848.

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Air Quality Program

Main: 303-441-1564
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