United Airlines grounded all US flights on July 24, 2025, after a fire alarm at its Willis Tower HQ in Chicago. Service ...

A heat advisory is in effect across the Chicago area today, with storm chances set to increase through the weekend.

A line of fast-moving storms prompted severe thunderstorm warnings in the Chicago area and ground stops at O'Hare and Midway airports. There were also reports of storm damage.

The new head of the Federal Aviation Administration said on Thursday the current state of the aging, understaffed U.S. air ...