An air quality alert is in effect until midnight Thursday for the Chicago area as Canadian wildfires continue.

An Air Pollution Action Day was called Wednesday morning for the Chicago area and is in effect until midnight, weather ...

An air quality alert remains in effect for the entire Chicago area, with another "Air Pollution Action Day" alert declared as ...

Smoke from Canadian wildfires continues to plague the Upper Midwest and Great Lakes region, with multiple states under air ...

Smoke coming in from Canadian wildfires settled over Chicago, causing unhealthy air quality conditions for at-risk groups.

Chicago’s air took a hit overnight as smoke from more than 100 Canadian wildfires drifted into the city, pushing the air ...

An air quality alert has been extended for the Chicago area as "unhealthy" levels are expected to continue into the start of ...

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

Smoke from Canadian wildfires triggered an air quality alert Thursday across northeast Illinois, meaning conditions are ...

Illinois environmental officials are warning residents about air quality concerns as wildfire smoke from Canada persists in ...

Another large fire exacerbated by climate change is threatening the health of Chicagoans. Government officials issued an air ...