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 ...

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

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

The alert was also issued because of unhealthy ozone levels in addition to the smoke particles. The Chicago area has been ...

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

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

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

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

Chicago's Air Quality Alert continues due to Canadian wildfire smoke, with health advisories for sensitive groups amidst ...

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

Chicago officially had the worst air quality in the world for a few hours Thursday. As a haze of Canadian wildfire smoke blanketed the metro area, no other major city in the world had air pollution ...