The city is racing to put up 277 sensors. Once installed, Chicago will have the biggest number of high-quality air monitors ...

"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at ...

According to the National Weather Service, the air quality alert remains in effect through midnight in parts of the Chicago ...

Chicago will see near-90 temperatures, high humidity, and poor air quality today, with storm chances returning tonight.

While an air quality alert continues for parts of the Midwest due to smoke from Canadian wildfires, northeastern Illinois was ...

National Weather Service officials called an air quality alert in effect until midnight as well as a beach hazard warning.

CHICAGO - An Air Quality Alert is in effect until midnight Wednesday night for the following counties: McHenry, Lake (IL), ...

Most of the Chicago area remains under an Air Quality Alert this weekend due to smoke from Canadian wildfires.

Chicago faces an air quality alert due to Canadian wildfire smoke and high ozone levels, with risks for sensitive groups.

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...

As of 9 p.m., Chicago retained the distinction of having the world's worst air quality, with an air quality index of 175. Detroit came in second with 171, according to IQAir.

The air quality alert is in place through Friday night. Highs today will be in the upper 70s. It is gusty with wind to around ...