Air Quality Alert Message

Full Alert Message

Air Quality Alert Message Colorado Department of Public Health and Environment Relayed by National Weather Service Boulder CO 410 PM MDT Mon Jun 30 2025 ...OZONE ACTION DAY ALERT FROM 400 PM MONDAY UNTIL 400 PM TUESDAY... The Colorado Department of Public Health and Environment has issued the following... WHAT...Ozone Action Day Alert. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Monday June 30 to 400 PM Tuesday July 01 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Although ozone concentrations will remain in the Good to Moderate range on Monday, higher ozone levels are expected on Tuesday. Ozone concentrations could reach the Unhealthy for Sensitive Groups category Tuesday afternoon and evening. The highest chance for these elevated ozone levels will be in western parts of the Denver metro area, including Golden. 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. Tuesday, July 1, 2025. 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 and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.