Iowa, Illinois, Missouri Severe Extreme Heat Warning | Effective 07/26/2026 18:15

Headline: 
Extreme Heat Warning issued July 26 at 8:15PM CDT until July 27 at 10:00PM CDT by NWS Quad Cities IA IL
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
July 26, 2026 - 6:15pm
Expires: 
July 27, 2026 - 2:15am
Description: 
* WHAT...A dangerous combination of oppressively humid and hot conditions with heat index values between 103 to 115 expected, with the highest values on Monday. * WHERE...Portions of northwest and west central Illinois, east central, northeast, and southeast Iowa, and northeast Missouri. * WHEN...Until 10 PM CDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Little relief will occur tonight with low temperatures in the mid to upper 70s.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Area Description: 
Buchanan; Delaware; Dubuque; Benton; Linn; Jones; Jackson; Iowa; Johnson; Cedar; Clinton; Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Rock Island; Henry; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark
Forcast Office: 
NWS Quad Cities IA IL