Weather Alerts For Ralston, IA

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING # DETAILS -------------------- WHAT Dangerously hot conditions with heat index values up to around 110 to 115 expected. WHERE Most of central and southern Iowa. WHEN Until 10 PM CDT this evening. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ISSUED AT Monday, July 27, 2026 at 12:19 PM 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. # AREAS AFFECTED -------------------- Adams, Carroll, Polk, Wayne, Adair, Appanoose, Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun, Cass, Clarke, Dallas, Davis, Decatur, Greene, Grundy, Guthrie, Hamilton, Hardin, Jasper, Lucas, Madison, Mahaska, Marion, Marshall, Monroe, Poweshiek, Ringgold, Story, Tama, Taylor, Union, Wapello, Warren, Webster Including the cities of Allerton, Manson, Aplington, Lake City, Carlisle, Toledo, Oskaloosa, Guthrie Center, Cedar Falls, Exira, Iowa Falls, Traer, Leon, Adair, Greenfield, Albia, Mount Ayr, Gladbrook, New Market, Greene, Allison, Waukee, Fontanelle, Casey, Earlham, Parkersburg, Dysart, Pomeroy, Ackley, Grinnell, Knoxville, Audubon, Corydon, Creston, Norwalk, Adel, Atlantic, Webster City, Corning, Clarksville, Seymour, Dumont, Lamoni, Shell Rock, Centerville, Rockwell City, Jefferson, Bloomfield, Indianola, Stuart, Conrad, Osceola, Des Moines, Perry, Humeston, Ottumwa, Wellsburg, Fort Dodge, Waterloo, Chariton, Grundy Center, Carroll, Pella, Dike, Reinbeck, Bayard, Tama, Eldora, Winterset, Bedford, Lenox, Boone, Panora, Ames, Marshalltown, Waverly, and Newton