Active Weather Alerts
Extreme Heat Warning
Issued: 8:18 AM Jun. 21, 2025 – National Weather Service
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM CDT TUESDAY... * WHAT...Dangerously hot conditions with heat index values up to 110 expected. * WHERE...In Illinois, Jersey IL, 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 noon today to 9 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... People in the Saint Louis Metropolitan Area can get information about cooling centers or energy assistance related to the excessive heat by calling the United Way of Greater Saint Louis at 800-427-4626, or if calling from a land line phone dial 2-1-1. You can also call Cool Down Saint Louis at 314-241-7668. &&
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