Air Quality Alert issued July 18 at 4:10PM MDT by NWS Denver CO
Now
From Today 16:10 (1 hour ago)
Until Tomorrow 16:00 (22 hours from now)
Official warning explanations:

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 Saturday July 18 to 400 PM Sunday July 19

IMPACTS,Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and sunny weather will allow ozone to reach levels that are Unhealthy for Sensitive Groups on Saturday and Sunday. The highest concentrations are most likely in western portions of the northern Colorado Front Range region. 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. Sunday, July 19, 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.

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 Saturday July 18 to 400 PM Sunday July 19 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and sunny weather will allow ozone to reach levels that are Unhealthy for Sensitive Groups on Saturday and Sunday. The highest concentrations are most likely in western portions of the northern Colorado Front Range region. 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. Sunday, July 19, 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.

Severe weather warnings are provided to meteoblue by more than 80 official agencies worldwide. meteoblue does not bear any responsibility regarding the actual content or nature of the warnings. Issues can be reported through our Feedback form and will be transmitted to the appropriate instances.

meteoMail - Warnings for Windsor

Get weather warnings by email for free.

meteoMail is free of charge and can be unsubscribed at any time.

We do not share your email address with third parties, as outlined in our privacy policy. By using meteoblue services, you agree to our terms and conditions. Your email address will also be usable with other meteoblue services.

Back to top