HEAT ADVISORY
HEAT ADVISORY ISSUED SEPTEMBER 1 AT 12:55PM CDT UNTIL SEPTEMBER 5 AT 8:00PM CDT
Effective: 2026-09-01 12:55:00
Expires: 2026-09-05 20:00:00
Issued by: NWS St Louis MO
Alert Text
* WHAT...HEAT INDEX VALUES UP TO 109. * 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 8 PM CDT SATURDAY.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT ILLNESSES.
More Information
Target Area
MADISON, ST. CLAIR, MONROE, ST. CHARLES, ST. LOUIS, ST. LOUIS CITY, JEFFERSON
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