Colorado Air Pollution Control Division – CDPHE

August 22, 2025 – Issued for western Eagle and eastern Garfield counties by the Colorado Department of Public Health and Environment.

Affected area: Western Eagle and eastern Garfield Counties. Locations include, but are not limited to Sweetwater Lake and Dotsero.

Advisory in effect: 9 a.m. MDT, Friday, August 22, 2025 to 9 a.m. MDT, Saturday, August 23, 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: Smoke from the Derby Fire is impacting parts of central Colorado. The heaviest smoke is expected in areas near the fire and in low-lying areas during the overnight and early morning hours, including the Sweetwater Lake and Colorado River Road between Dotsero and Burns.