502
AEUS75 KBOU 182211
AQABOU

Air Quality Alert Message
Colorado Department of Public Health and Environment
Relayed by National Weather Service Boulder CO
410 PM MDT Wed Jun 18 2025

COC001-123-059-069-031-035-014-013-005-192200-
Adams-Weld-Jefferson-Larimer-Denver-Douglas-Broomfield-
Boulder-Arapahoe-
410 PM MDT Wed Jun 18 2025

...OZONE ACTION DAY ALERT FROM 400 PM WEDNESDAY UNTIL 400 PM
THURSDAY...

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 Wednesday June 18 to 400 PM Thursday June 19

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor.  Ozone is expected to be in the Good to
Moderate range on Wednesday. However, hot, sunny, and stagnant
weather will allow ozone to reach the Unhealthy for Sensitive
Groups category on Thursday. The highest ozone concentrations are
expected in southern and western portions of the Denver Metro
area, along the I-25 corridor towards Fort Collins, and Greeley.
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, June 19, 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.

$$