Weather Alerts For Waterloo, IA

# HEADLINE -------------------- EXTREME HEAT WARNING IN EFFECT FROM NOON MONDAY TO 9 PM CDT TUESDAY # DETAILS -------------------- WHAT Dangerously hot conditions with heat index values above 100 expected. WHERE Northern and northeastern Iowa. WHEN From noon Monday to 9 PM CDT Tuesday. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ADDITIONAL DETAILS Extreme heat will persist through much of next week, potentially including the 4th of July weekend. ISSUED AT Sunday, June 28, 2026 at 12:57 AM CDT ISSUED BY National Weather Service Des Moines IA HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- 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. # AREAS AFFECTED -------------------- Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy, Hancock, Winnebago, Worth Including the cities of Cedar Falls, Britt, Garner, Northwood, Manly, Dike, Forest City, Waverly, Lake Mills, Grundy Center, Reinbeck, Clarksville, Kanawha, Mason City, Allison, Greene, Waterloo, Wellsburg, Aplington, Conrad, Dumont, Parkersburg, Hampton, Shell Rock, and Clear Lake