What To Know About Colorado's Ozone Action Day Alert

Have you ever heard of an Ozone Action Day Alert? There are several in effect for Colorado through Tuesday afternoon.

AN OZONE ACTION DAY ALERT IS IN EFFECT 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...Until 400 PM Tuesday, July 1st
IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Although ozone concentrations will remain in the Good to Moderate range on Monday, higher ozone levels are expected on Tuesday.
Ozone concentrations could reach the Unhealthy for Sensitive Groups category Tuesday afternoon and evening.
The highest chance for these elevated ozone levels will be in western parts of the Denver metro area, including Golden.
If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Tuesday, July 1, 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.

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"An Ozone Action Day alert is issued when weather conditions are likely to combine with pollution emissions to produce high levels of ground-level ozone, which can be harmful to human health.

During these alerts, individuals are advised to take precautions to minimize their exposure to ozone, such as reducing outdoor activities and limiting energy consumption." (National Weather Service)

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