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 ...

Hazy skies from fires are reminiscent of 2023 when Chicago was the second-most-polluted major city in the country.

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 ...

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 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 ...

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

As of early Thursday, the air quality for much of northeast Illinois, including multiple suburbs to the north and some to the ...

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

The Illinois EPA declared an Air Pollution Action Day in the Chicagoland area. Find out which counties are affected and what ...