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Special Air Quality Statement
Air Quality Health Advisory for southern Mesa and western Montrose Counties. Click HERE for more information.

Other Areas Advisory Page

Outside the Front Range/Denver Metro Area


Air Quality Health Advisory for Wildfire Smoke

Avisos en Español para todo el Estado (Colorado)

Issued for southern Mesa and western Montrose Counties
Issued at 7:43 AM MDT, Friday, July 18, 2025

Issued by the Colorado Department of Public Health and Environment


Affected Area: Mesa and Montrose Counties. Locations include, but are not limited to Gateway and Paradox.

Advisory in Effect: 9:00 AM MDT, Friday, July 18, 2025 to 9:00 AM MDT, Saturday, July 19, 2025

Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.

Outlook: Large wildfires are burning in southern Mesa and western Montrose counties. Moderate to heavy smoke is possible on Friday and early Saturday morning in areas near the fires.


For the latest Colorado statewide air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx

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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