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 ...

It was a clean sweep Thursday! Temperatures reached 90 degrees at all three major observation sites: O’Hare International ...

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 ...

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

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.

Protecting people, pets in extreme heat in Chicago A dangerous heat wave is expected to scorch Chicago beginning Wednesday.

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

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

A sweltering heat wave will bring dangerously hot conditions to the entire Chicago area this week, the NBC 5 Storm Team said.