⚠️ Heat Advisory – Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark – Saturday, July 18, 2026

Event	Heat Advisory
Severity	Moderate
Urgency	Expected
Certainty	Likely
Area	Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark
Effective	7/18/2026, 9:57:00 AM CDT
Expires	7/18/2026, 7:00:00 PM CDT

Heat Advisory issued July 18 at 9:57AM CDT until July 18 at 7:00PM CDT by NWS Quad Cities IA IL

Details

* WHAT…Heat index values around 100 degrees expected.

* WHERE…Portions of northwest and west central Illinois, east
central and southeast Iowa, and northeast Missouri.

* WHEN…Until 7 PM CDT this evening.

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

Instructions

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

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.