Chicago Air Quality
Current air-quality information for Chicago, United States.
Air quality is generally considered satisfactory.
World Air Quality Index Project (WAQI) · Updated 2026-10-15T18:00:00-06:00Health context
At the current AQI of 20, Chicago is in the Good category on the displayed AQI scale. Most people can continue normal outdoor activities. Current pollutant values shown for Chicago are PM2.5 20 µg/m³. The current reading is identified on this page as World Air Quality Index Project (WAQI).
Air-quality information is not medical advice. People with asthma, heart or lung disease, children, older adults and other sensitive groups may need to take additional precautions when pollution is elevated.
Recent History & Forecast
This chart shows atmospheric-model AQI history and forecast from Open-Meteo / Copernicus Atmosphere Monitoring Service (CAMS) model. It is separate from any monitoring-station observation shown in the Current AQI card.
What does AQI 20 mean in Chicago?
Chicago currently has an AQI of 20, which falls in the Good category. This indicates relatively low overall air pollution on the displayed AQI scale. Normal outdoor activity is generally appropriate for most people. The pollutant values currently shown for Chicago are PM2.5 20 µg/m³. The displayed current conditions are identified as World Air Quality Index Project (WAQI).
Nearby cities
- Milwaukee air quality — approximately 131 km away
- Madison air quality — approximately 197 km away
- Grand Rapids air quality — approximately 201 km away
- Fort Wayne air quality — approximately 224 km away
- Indianapolis air quality — approximately 265 km away
- Toledo air quality — approximately 339 km away
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