Denver, Colorado – Residents across the Front Range should brace for unhealthy air and rising heat as an Ozone Action Day Alert remains in effect through 4 p.m. Monday, with highs expected to push into the mid to upper 90s this week. Sunday’s sunshine and light winds allowed ozone levels to climb to unhealthy ranges, especially in western Denver, Boulder, and foothill communities.
According to the Colorado Department of Public Health and Environment, ozone concentrations will stay elevated through late Monday, particularly along the I-25 corridor from Denver to Fort Collins. Active children, older adults, and people with asthma or lung disease are urged to limit outdoor activity until conditions improve.
Monday: Sunny and hot with highs around 95°F. Gusty southeast winds up to 26 mph by afternoon may bring slight relief from stagnant air.
Tuesday: Slightly hotter, with a high near 96°F under mostly sunny skies. Winds ease to around 18 mph.
Wednesday: Mostly sunny, highs near 97°F. Ozone levels may dip slightly, but the air remains dry.
Thursday: Continued heat, highs in the upper 90s with partly cloudy skies.
Friday: Storm chances return late in the day with highs around 92°F and increasing clouds.
Air quality should gradually improve after Monday evening, but dry, hot conditions will dominate the state until at least Friday. Scattered storms are possible by the weekend, with a higher likelihood Saturday and Sunday across Denver, Boulder, and the foothills.
