EXTREME HEAT WARNING
EXTREME HEAT WARNING ISSUED JUNE 28 AT 2:00AM CDT UNTIL JULY 3 AT 12:00AM CDT
Effective: 2026-06-28 02:00:00
Expires: 2026-07-03 00:00:00
Issued by: NWS St Louis MO
Alert Text
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HEAT INDEX VALUES UP TO 110EXPECTED.
* 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 NOON TODAY TO MIDNIGHT CDT THURSDAY NIGHT.
* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING EXTREME HEAT AND HIGH HUMIDITY EVENTS.
More Information
Target Area
MADISON, ST. CLAIR, MONROE, ST. CHARLES, ST. LOUIS, ST. LOUIS CITY, JEFFERSON
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