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

Air quality alerts issued Thursday in Illinois because of Canadian wildfire smoke marked the latest bout in an increasingly ...

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...

The poor air quality continues to prevail in Illinois as Canadian wildfire smoke migrates south into the U.S. As a result, ...

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

An Illinois Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate ...

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

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

Chicago faces an air quality alert due to Canadian wildfire smoke and high ozone levels, with risks for sensitive groups.

Dr. Steve Arnold, a pulmonologist at Decatur Memorial Hospital, says for the last few days the air quality index has been bad ...

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

Why is the air quality bad right now? Smoke from wildfires spreads to the Midwest, Northeast and southern California in the U ...