United States
Air quality in Chicago is acceptable. Consider reducing intensity or duration.
Data from Open-Meteo • Updated 7:54:40 PM
Chicago's air quality is influenced by industrial activity, vehicle emissions, and weather patterns off Lake Michigan. Lake breezes can help disperse pollutants on some days but trap them on others. Summer brings elevated ozone levels, while winter inversions can concentrate particulate matter.
Get your Training Conditions Score, analyze your route segment by segment, and find the best time to train.
Try it freeChicago generally sees AQI values between 30 and 65, mostly in the Good range. Hot summer days can push ozone levels into Moderate or higher, particularly away from the lakefront.
Morning runs along the lakefront trail benefit from cleaner lake breezes. Spring and fall offer the most consistently good air quality for outdoor exercise.
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.