Douglas County
Air Quality Alert until TUE 4:00 PM MDT
Issued May, 11 2026 at 4:10 PM - US/Mountain expires May, 12 2026 at 4:00 PM - US/Mountain
...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 May 11 to 400 PM Tuesday May 12
IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor. Concentrations of ozone in the Unhealthy
for Sensitive Groups category are possible on Monday and Tuesday
for locations in the northern Colorado Front Range region,
including the Denver Metro area, Fort Collins, Greeley, and
surrounding areas. For Colorado air quality conditions,
forecasts, and advisories, visit:
https://www.colorado.gov/airquality/colorado_summary.aspx If
possible, please help us reduce pollution by limiting driving gas
and diesel-powered vehicles until at least 4 PM Tuesday, May 12,
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
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.
