Colorado Unknown Air Quality Alert | Effective 06/18/2026 15:10

The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Ozone. WHERE...Mesa County. Locations include, but are not limited to Grand Junction and Palisade. WHEN...200 PM Thursday June 18 to 1000 PM Thursday June 18 IMPACTS...A weather event known as a stratospheric intrusion is occurring. During these events, ozone from high in the atmosphere is pulled to the ground, resulting in elevated ozone concentrations. Ozone is expected to be Moderate to Unhealthy for Sensitive Groups through late Thursday evening. HEALTH INFORMATION...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.