Denver, Colorado – Hot, stagnant air is causing ozone levels to rise into unhealthy territory for sensitive groups across the Denver metro and Front Range through 4 p.m. Thursday, prompting health officials to issue an Ozone Action Day Alert.
The Colorado Department of Public Health and Environment has advised residents in Denver, Boulder, Broomfield, Douglas, Jefferson, western Arapahoe, western Adams, Larimer, and Weld counties to take precautions.
These include reducing gas and diesel vehicle use and limiting outdoor activities—especially for individuals with asthma, lung disease, and for children and older adults.
What’s Causing the Poor Air Quality?
As winds calm and temperatures rise, the conditions are perfect for the formation of ground-level ozone. This is contributing to poor air quality, which is expected to worsen throughout Thursday.
Health officials recommend staying indoors during the peak afternoon hours when the air is most polluted. It’s also advised to postpone activities like lawn mowing or fueling vehicles until after 4 p.m. to help reduce ozone levels.
Health Impacts and Precautions
The unhealthy air quality may lead to increased respiratory symptoms and breathing discomfort, particularly for those who are sensitive. Individuals with respiratory conditions should take extra care and limit exposure.
Residents can stay informed by checking real-time air quality conditions and learning how they can help reduce pollution at colorado.gov/airquality.
Ozone Alert May Be Extended
If poor air quality continues, the alert may be extended beyond Thursday afternoon. Keep an eye on local updates for more information.
