Air Quality Health Advisory for Wildfire Smoke

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

Updated at 4:26 PM 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 limited to Delta, Montrose, Nucla, Telluride, Ouray, Dove Creek, Gunnison, Silverton, Lake City, Creede, Buena Vista, Salida, Saguache, Del Norte, South Fork, Alamosa, Canon City, Westcliffe, Pueblo, Leadville, and Fairplay.

Advisory in Effect: 9:00 AM MDT, Saturday, July 4, 2026 to 9:00 AM MDT, Sunday, July 5, 2026

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: Moderate to heavy smoke transported from several wildfires in Colorado and Utah will be possible within the advisory area through at least Sunday morning.

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

For the latest Smoke Blog, visit: https://colosmokeoutlook.blogspot.com/

For more information about smoke and your health, visit: https://cdphe.colorado.gov/outdoor-burning/wildfire-smoke-and-health