Denver’s air quality for Sunday, July 6, 2025, is being rated as moderate for particulate matter (PM2.5) with an Air Quality Index (AQI) of 57, based on the latest official observations. This means that the air is generally acceptable for most people, but individuals who are unusually sensitive to air pollution, particularly those with respiratory or heart conditions and older adults, could begin to experience mild health symptoms. Those in sensitive groups are advised to consider reducing prolonged or heavy outdoor exertion during the day[1].

Ozone concentrations for today are projected to remain in the good to moderate range, particularly between noon and 8 p.m. People who are unusually sensitive to ozone should also consider limiting outdoor activity during these hours[1]. Ozone can be particularly troubling during warmer periods and may cause acute respiratory issues or trigger asthma attacks in sensitive individuals.

Other common pollutants such as carbon monoxide and nitrogen dioxide are expected to stay in the good category, presenting minimal risk to the general population. Visibility throughout the day is forecast to be good to moderate, which aligns with the moderate levels of particulate matter being detected[1].

No air quality advisories or Ozone Action Day Alerts are currently in effect for the Denver metro area or the greater Front Range Urban Corridor. Residents can continue normal activities but should remain mindful of symptoms if they fall into sensitive categories[1][3].

Denver’s air quality has seen challenges in the past, particularly during hot, stagnant days when pollution can become trapped near the surface, intensifying ozone and particulate concentrations. While today’s levels are moderate and do not warrant a formal advisory, the city’s long-term air quality can fluctuate quickly due to weather shifts and population pressures, making it important for residents to stay informed through official updates[1][4].