Air Quality Health Advisory for Ozone
Issued for Douglas, Teller, western Elbert, western El Paso and central Arapahoe Counties.
Issued at 1:43 PM MDT, Tuesday, April 21, 2026
Issued by the Colorado Department of Public Health and Environment
Affected Area: Douglas, Teller, western Elbert, western El Paso and central Arapahoe Counties. Locations include, but are not limited to Castle Rock, Kiowa, Monument, Manitou Springs, and Woodland Park.
Advisory in Effect: 2:00 PM MDT, Tuesday, April 21, 2026 to 10:00 PM MDT, Tuesday, April 21, 2026
Public Health Recommendations: 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.
Outlook: Ozone concentrations could reach the Unhealthy for Sensitive Groups category within the advisory area Tuesday afternoon and evening. Ozone levels will improve overnight Tuesday night.