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 ...

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

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

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

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), ...

Air Quality Alerts remain in effect for the Chicago area Friday due to smoke from Canadian wildfires. ABC7 Accuweather ...

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.

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

Why is it smoky in Chicago today? Wildfires are to blame for the city's air quality - among the worst in the world Tuesday. Check our map for updates.