United States
Air quality in Denver is poor. Sensitive individuals should exercise indoors.
Data from Open-Meteo • Updated 9:43:08 PM
Denver's mile-high elevation brings unique air quality challenges, including temperature inversions and occasional wildfire smoke from western fires. The thinner atmosphere at altitude means more UV exposure and less oxygen, affecting both pollution chemistry and exercise performance. The South Platte River Trail and city parks offer cleaner running conditions.
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Try it freeDenver's AQI typically ranges from 30 to 70. Winter inversions and summer ozone both contribute to elevated readings. Wildfire smoke can push the AQI above 150 during fire season.
Morning runs in spring and fall offer the best air quality. Be aware that altitude amplifies the effects of pollutants, so consider reducing intensity on Moderate AQI days.
Deep dive into pollutants, thresholds, and how air quality affects your running performance.
Quick threshold lookup for every AQI level. Know when to run and when to stay indoors.
Practical rules for training during smoke events: when to go indoors and how to recover.