Heat Advisory issued July 27 at 9:10PM CDT until July 28 at 7:00PM CDT by NWS St Louis MO
Issue date: 2026-07-28T02:10+00:00
* WHAT...Heat index values up to 102. * WHERE...Portions of south central and southwest Illinois and central and east central Missouri. * WHEN...Until 7 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
