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

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

The National Weather Service has opted to extend an air quality alert in the Chicago area for another day.

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

Air Quality Alerts remain in effect for the Chicago area Friday due to smoke from Canadian wildfires. ABC7 Accuweather ...

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

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

Good afternoon, Chicago. Air quality alerts issued today in Illinois because of Canadian wildfire smoke marked the latest bout in an increasingly common summer occurrence. The alert covers 34 Illinois ...

Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian wildfire smoke.

The public is advised to take precautions, especially those sensitive to polluted conditions, by limiting their time outside and keeping windows and doors closed.

Wildfire smoke has pushed Chicago's air quality into the "unhealthy" zone. It's so bad, in fact, that we're the most polluted city in the world right now. Here's what you should know.

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