Air Quality Alert: Broomfield, CO; Weld, CO; Larimer, CO; Douglas, CO; Denver, CO; Adams, CO; Arapahoe, CO; Jefferson, CO; Boulder, CO

extract

Air Quality Alert — Broomfield, CO; Weld, CO; Larimer, CO; Douglas, CO; Denver, CO; Adams, CO; Arapahoe, CO; Jefferson, CO; Boulder, CO Severity: Unknown. Certainty: Unknown. The Colorado Department of Public Health and Environment has issued the following... WHAT...Action Day for Multiple Pollutants. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Wednesday August 05 to 400 PM Thursday August 06 IMPACTS...Action Day for Multiple Pollutants is now in effect for the Front Range Urban Corridor. Ozone is expected to be in the Moderate to Unhealthy for Sensitive Groups range on Wednesday and Thursday. The highest concentrations of ozone are most likely in the southern and western portions of the Denver Metro area. Fine particulate concentrations are expected to be in the Moderate category on Wednesday, and in the Moderate to Unhealthy for Sensitive Groups range on Thursday. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Thursday, August 6, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone-pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults. People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.