Excessive Heat Warning issued July 28 at 3:27AM CDT until August 1 at 7:00PM CDT by NWS St Louis MO

* WHAT...Dangerously hot conditions with heat index values up to 112 expected. * WHERE...Jefferson MO, Saint Charles MO, Saint Louis City MO, and Saint Louis MO Counties. * WHEN...From 1 PM Monday to 7 PM CDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.