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Extreme Heat Watch

Active

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

Starts
Ends
Issued
Severity Severe
Urgency Future
Certainty Likely

Details

* WHAT...Dangerously hot conditions with heat index values of 105 to 110 possible.
* 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...From Sunday afternoon through Thursday evening.
* 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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