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May 24, 2024 · In 2019, Chicago averaged an air quality index (AQI) of 52 (“moderate”). The US Environmental Protection Agency (EPA) defines “moderate” air ...
Localized Air Quality Index and forecast for Chicago, IL. Track air pollution now to help plan your day and make healthier lifestyle decisions.
The Air Quality Index (AQI) is used for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects ...
The AQI is a color-coded system that classifies air quality from Good (Green) to Hazardous (Maroon). Because air quality can change as a result of changin ...
The Air Quality Index is based on measurement of particulate matter (PM2.5 and PM10), Ozone (O3), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2) and Carbon ...