Chicago Air Quality
Current air-quality information for Chicago, United States.
US AQI (model estimate)36Good
Data sourceOpen-Meteo / CAMS modelUpdated 2026-09-21T13:00
PM2.55.1µg/m³
PM105.3µg/m³
O₃67µg/m³
NO₂3.8µg/m³
What does the AQI mean?
The AQI category shown above follows the US AQI bands for the model-provided AQI value. The displayed pollutants are atmospheric-model estimates from the cited source and should not be interpreted as measurements from a local monitor.
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