Chicago will see near-90 temperatures, high humidity, and poor air quality today, with storm chances returning tonight.

Concern for poor air quality in the greater Chicago area remains as the Illinois EPA extends its alert until Thursday night.

CHICAGO - An Air Quality Alert is in effect until midnight Wednesday night for the following counties: McHenry, Lake (IL), ...

The public is advised to take precautions, especially those sensitive to polluted conditions, by limiting their time outside ...

"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at ...

According to the National Weather Service, the air quality alert remains in effect through midnight in parts of the Chicago ...

While an air quality alert continues for parts of the Midwest due to smoke from Canadian wildfires, northeastern Illinois was ...

The hazy skies in the Chicago area are the visible sign of the poor air quality on Thursday as smoke from Canadian wildfires ...

National Weather Service officials called an air quality alert in effect until midnight as well as a beach hazard warning.

CHICAGO (WLS) -- Air Quality Alerts remain in effect for the Chicago area Friday due to smoke from Canadian wildfires.

Most of the Chicago area remains under an Air Quality Alert this weekend due to smoke from Canadian wildfires.

For a period of time this week, Chicago's air quality ranked as the worst air quality on planet earth. This was caused by smoke billowing south from ...