Data source: National Weather Service (NWS) Last verified: July 19, 2026

Extreme Heat

Heat Advisory (ADVISORY) - expires July 19, 2026 at 8:00 AM EDT

Areas affected: Jefferson; Perry; Franklin; Hamilton; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid

Heat Advisory issued July 18 at 8:17PM CDT until July 21 at 7:00PM CDT by NWS Paducah KY

• WHAT...Heat index values between 100 to 105 expected.

• WHERE...Portions of southern Illinois, western Kentucky, and southeast Missouri.

• WHEN...Until 7 PM CDT Tuesday.

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

• ADDITIONAL DETAILS...Higher humidity levels combined with hot temperatures on Tuesday may cause heat index values to near 110 degrees.

What to do: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Source: NWS Paducah KY

Source

Alert data provided by the National Weather Service (NWS). This page shows active alerts only and is refreshed daily. For real-time updates, visit weather.gov.