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

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 ...

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

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

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 ...

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

In addition to the Midwest and eastern US, the smoke from the fires has caused air quality to drop to unhealthy levels in ...

The Chicago area is under an air quality alert until due to the Canadian wildfire smoke. Environmental officials said the pollutants from the smoke will be sticking around the area through at least ...

Chicago’s air quality was among the worst in the world after Canadian wildfire smoke drifted south to create unsafe ...