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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.

Other Areas Advisory Page

Outside the Denver Metro Area

No advisories at this time.

Additional Information
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ACTION DAYS: An Action Day for fine particulate matter (particulates), carbon monoxide, ozone or other pollutants indicates that either current air quality is unhealthy or conditions are expected to worsen later in the day or on the next day. Action Days for air pollutants generally indicate that air quality will be in either the Unhealthy or Unhealthy-for-Sensitive-Groups categories according to the Air Quality Index. Action Days trigger voluntary pollution prevention measures, which may vary by season, and public health recommendations.

The AIR QUALITY INDEX reports the daily level of air pollution on an hourly basis. The index reports the highest level of either carbon monoxide, fine particulates or ozone depending on which pollutant has the greatest hourly concentration. Values greater than 100 for carbon monoxide, fine particulates and ozone indicate exceedances of the pollutant's state and federal standards. Air Quality Index values between 0-50 are good, 51-100 moderate, 101-150 unhealthy for sensitive groups, 151-200 unhealthy, 201-300 very unhealthy, and over 300 hazardous.

COLORADO OPEN BURN FORECAST: For those with permits for Open Burning, that is burning of waste materials or vegetation outside, check the following webpage to find out if open burning is allowed today:
http://www.colorado.gov/airquality/burn_forecast.aspx

FOR CURRENT AIR QUALITY INFORMATION AND UPDATES:
http://www.colorado.gov/airquality/advisory.aspx
http://www.colorado.gov/airquality/air_quality.aspx

ABOUT THE AIR QUALITY INDEX:
https://www.airnow.gov/aqi/aqi-basics/

SOCIAL MEDIA AND AIR QUALITY NOTIFICATIONS:
http://www.facebook.com/cdphe.apcd
http://twitter.com/#!/cdpheapcd
http://www.enviroflash.info/signup.cfm