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Extreme Heat Warning

Active

Madison; St. Clair; Monroe; St. Charles; St. Louis

Status In Progress Started about 2 hours ago

Ends Jul 27, 9:00 PM CDT

Issued Jul 26, 2:22 PM CDT

Severity Severe

Urgency Expected

Certainty Likely

Details

* WHAT...Dangerously hot conditions with heat index values up to 121.

* WHERE...In Illinois, Madison IL, Monroe IL, and Saint Clair IL Counties. In Missouri, Jefferson MO, Saint Charles MO, Saint Louis City MO, and Saint Louis MO Counties.

* WHEN...Until 9 PM CDT Monday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

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Data from the National Weather Service

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