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

Northwestern University researchers are giving the city 30 recommendations to better prepare for heat waves and potentially ...

CHICAGO—Cheryl Johnson was watching the news during the worst heat wave in her city’s history when she learned that a man she ...

A historic, deadly heat wave affected much of the Midwest and specifically Chicago in July of 1995. Over 700 deaths were ...

A dangerous heat wave has descended on Chicagoland this week, with extreme heat and humidity to persist through Thursday. Temperatures will get well into the 90s, but heat index values will soar to ...

Researchers have found that warmer, less dense air lets batted baseballs fly farther — leading to a slight but measurable ...

If you factor in the heat index, cities such as Houston, Memphis and Cleveland are as hot or hotter than Phoenix this week.

This past Thursday should have been a beautiful day, a day to throw open the windows and putter in the garden, long-awaited ...

Stifling heat and humidity will cover the Chicago area from Wednesday morning through Thursday evening, according to ...

Chicago dives into a hot summer, posing a risk for outdoor workers and people spending time outside during the heat wave.

A dangerous heat wave is expected to bring triple digit temperatures to the Chicago area. An extreme heat watch will go into effect on Wednesday.

Chicago heat wave, which took place 30 years ago this week, remains the Chicago area's deadliest weather disaster.