1995 Chicago heat wave left 739 people dead nearly 30 years ago

CHICAGO (WLS) -- It has been nearly 30 years since one of the worst heat-related disasters in the country.

Chicago's 1995 heat wave left 739 people dead over a five day-stretch.

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The National Weather Service says heat is the number one weather-related killer in the nation.

This comes as temperatures are expected to soar into the 90s on Saturday, with the heat index reaching 100-105 on Sunday, Monday and Tuesday.

A NWS Extreme Heat Warning for Cook County went into effect at 10 a.m. Friday and is set to expire at midnight Tuesday.

SEE ALSO | How to stay cool in Chicago area amid rising temperatures this summer: LIST

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