Extreme Heat Warning issued July 22 at 2:33AM CDT until July 24 at 7:00PM CDT by NWS St Louis MO

* WHAT...Dangerously hot conditions with heat index values up to 112.

* WHERE...In Illinois, 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 Thursday.

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