Extreme Heat Warning issued July 25 at 2:18PM CDT until July 29 at 7:00PM CDT by NWS St Louis MO

* WHAT...Dangerously hot conditions with heat index values up to 113.

* WHERE...In Illinois, Madison IL, Monroe IL, and Saint Clair IL
Counties. In Missouri, Franklin MO, Jefferson MO, Saint Charles
MO, Saint Louis City MO, and Saint Louis MO Counties.

* WHEN...Until 7 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.