Heat Advisory issued August 27 at 8:11PM CDT until August 29 at 7:00PM CDT by NWS St Louis MO

* WHAT...Heat index values up to 105.

* 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 Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.