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

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 ...

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

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

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

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

Chicago woke up to code red air quality on Thursday as smoke from Canadian wildfires blanketed the city, turning the skyline ...

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

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 ...

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