Air Quality
Moderate
Active Contamination
4
Active Permits
0
Air quality in Cook County is rated moderate with a median AQI of 53 (274 days measured in 2025). 10 contamination sites are tracked, including 4 open leaking tank incidents. 1 EV charging station are available in the area.
Air Quality — Cook County (2025)i
AQSThe Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0-50 is considered good; 51-100 is moderate; above 100 may be unhealthy for sensitive groups.
Median AQI
PM2.5 Daysi
145Ozone Daysi
97Industrial Monitoringi
Contamination Sitesi
Contaminated sites tracked by the EPA and state agencies. Superfund sites are the most seriously contaminated locations. Brownfields are former industrial properties being cleaned up for reuse. LUST sites have confirmed leaks from underground storage tanks.
EV Charging & Alternative Fuel Stationsi
AFDC