Colorado Unknown Air Quality Alert | Effective 07/14/2026 08:10
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 July 13 to 400 PM Tuesday July 14
IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor. Ozone concentrations in the Unhealthy for
Sensitive Groups category are expected during the afternoon and