Issue date: 2026-09-13T16:12+00:00
* WHAT...High temperatures in the mid to upper 90s, with stifling humidity creating Peak Heat Index values up to around 105 degrees. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...From 11 AM CDT /noon EDT/ to 8 PM CDT /9 PM EDT/ Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Issue date: 2026-09-13T04:35+00:00
High temperatures today will reach the lower to middle 90s. Combined with the humidity, heat index values will rise to near or just above 100 degrees this afternoon. If you have outdoor plans, prepare for impacts from the heat by staying hydrated, wearing cool, loose-fitting clothing and, taking frequent breaks in the shade or in an air-conditioned location.