Extreme heat is considered the deadliest weather-related hazard in the U.S., according to the Fifth National Climate ...

Scattered storms and cloud cover may hold today’s heat in check, with cooler, more comfortable weather expected later this week just in time for Lollapalooza.

But before that, the chance for severe weather along with dangerous heat and humidity were in the forecast Monday as part of ...

After a weekend of scattered storms and warm temperatures, the Chicago area faces a sweltering start to the week with a heat ...

At 4:07 p.m. EDT on Sunday, the National Weather Service released an updated severe thunderstorm warning in effect until 4:30 ...

Forecasters warn of 100- to 105-degree heat index values through Tuesday, with potential storms offering limited relief.