Heat Advisory issued June 26 at 3:42AM CDT until June 26 at 9:00PM CDT by NWS St Louis MO

* 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.