An Air Quality Alert is in effect for nearly the entire Chicago area for high levels of ozone pollution during enduring hot ...

"It's an icon for the city," said Gary Stoltz of R2 Companies, which is redeveloping the Rector Building where the sign is ...

While declining air quality from wildfire smoke remains a concern across the Chicago area, attention is shifting to the ...

Air quality alerts remain in place for the entire Chicago area, with wildfire smoke billowing into the upper Midwest, but ...

Heavy smoke from several large wildfires blazing in Canada and Minnesota is engulfing large swaths of the Midwest and the U.S ...

The hazy smoke, which also carries a noticeable scent, has moved into the region from Canada. The alert is in effect until ...

Much of the Chicago area is under an Air Quality Alert due to unhealthy ozone and wildfire smoke levels, The National Weather Service said.

Smoke from Canadian wildfires continues to blanket parts of the Midwest, Great Lakes and Northeast.

Major swaths of Illinois are experiencing poor air quality Wednesday due to migrating wildfire smoke from Canada. Over 100 of ...

Air quality alerts remain in effect as wildfire smoke spreads across the eastern U.S. ahead of Sunday's World Cup final.

The strip of dense wildfire smoke can be seen on satellites stretching from the Upper Midwest and Canada, across the Great ...

An Air Quality Alert remains in effect for Chicagoland through at least Thursday, as the ongoing heat wave is now mixing with ...