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

As wildfires continue to rage in western Canada, the Environmental Protection Agency issued its first alert of the year for ...

Canadian wildfires brought some of the worst air quality in the world to Chicago last week. Since then, the AQI has gotten a ...

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

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

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

Despite better air on Friday in Chicago, the city remains under an air quality alert. It remains among the most unhealthy in ...

Smoke will remain in the skies over Chicagoland tonight and Wednesday. Tomorrow will be a hot day with highs just shy of 90 ...

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

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

For Saturday, look for clouds to increase through the day with highs in the 70s and cooler temperatures along the lake in the ...

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