Weather Warning

This warning affects:Jefferson, Jersey, Madison, Monroe, St. Charles, St. Clair, St. Louis and St. Louis City.

Heat Advisory for Jersey, Madison, St. Clair, Monroe, St. Charles, and 3 more locations

  • Issued by the National Oceanographic and Atmospheric Administration

AREAS AFFECTED : JERSEY; MADISON; ST. CLAIR; MONROE; ST. CHARLES; ST. LOUIS; ST. LOUIS CITY; JEFFERSON

* WHAT...Heat index values up to 102. 
 
* 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...Until 9 PM CDT this evening. 
 
* IMPACTS...Hot temperatures and high humidity may cause heat 
illnesses.