Denver Air Quality Unhealthy for Sensitive Groups
Air quality in Denver, Colorado, has been classified as 'Unhealthy for Sensitive Groups' with an Air Quality Index (AQI) of 106 as of October 13, 2026. This level is primarily influenced by PM2.5 and ozone concentrations, reported by the Colorado Department of Public Health and Environment to the US EPA AirNow program. The data is preliminary and has not yet been validated. Sensitive groups, including individuals with heart or lung conditions, older adults, and children, are advised to take precautions. The urban exposure index indicates that approximately 464,518 people are within a 5 km radius of the affected area.