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

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

Wildfire smoke brings hazy skies and poor air quality to Chicago today, with hot and humid weather building into the weekend.

National Weather Service officials issued an air quality alert set to expire at midnight Saturday for the Chicago and ...

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

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

Wildfire smoke from Canada is a problem again in the Chicago area, with an air quality alert in place now extended through ...

An air quality alert in the Chicago area has been extended for another day as Canadian wildfire smoke continues to plague the ...

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

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

CHICAGO (WLS) -- An air quality alert has been extended for part of the Chicago area through Thursday. The alert for McHenry, Lake, Kane, DuPage, Kendall, Grundy, Cook and Will counties in Illinois ...

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