Active Weather Alerts
Air Quality Alert
Issued: 10:11 PM Jun. 26, 2025 – National Weather Service
...OZONE ACTION DAY ALERT FROM 400 PM THURSDAY UNTIL 1200 AM FRIDAY... 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 Thursday June 26 to 1200 AM Friday June 27 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and stagnant conditions will allow ozone to reach levels that are Unhealthy for Sensitive Groups on Thursday in the northern Colorado Front Range region. Shifting winds and unsettled conditions are expected to keep ozone in the Good to Moderate range on Friday. 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 midnight, Thursday night, June 26, 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.
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