Weather Alerts For Chesterton, IN

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ TONIGHT # DETAILS -------------------- WHAT Dangerously hot conditions with peak heat index values up to 105 degrees. WHERE Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN Until midnight CDT /1 AM EDT/ tonight. IMPACTS Heat related illnesses increase during heat waves. ISSUED AT Thursday, July 2, 2026 at 3:03 AM CDT ISSUED BY National Weather Service Chicago IL 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. # AREAS AFFECTED -------------------- Benton, Boone, De Kalb, DuPage, Eastern Will, Ford, Grundy, Iroquois, Jasper, Kane, Kankakee, Kendall, La Salle, Lake IL, Lake IN, Lee, Livingston, McHenry, Newton, Northern Will, Ogle, Porter, Southern Will, Winnebago Including the cities of Kankakee, Rockford, Aurora, Buffalo Grove, Plainfield, Valparaiso, Gibson City, Roselawn, Mundelein, Paxton, Gurnee, Yorkville, Oxford, Beecher, Bradley, Gary, Gilman, Joliet, Carol Stream, Dixon, Marseilles, Naperville, Streator, McHenry, Byron, Mokena, Pontiac, DeMotte, Channahon, Lombard, Crete, Wheaton, Bolingbrook, DeKalb, Dwight, Kentland, Waukegan, Peotone, Rensselaer, Hammond, Mendota, Portage, Woodstock, Crystal Lake, Morris, Ottawa, La Salle, Merrillville, Chesterton, Manhattan, Watseka, Oswego, Elgin, Bourbonnais, Fairbury, Sycamore, Wilmington, Morocco, Plano, Minooka, Oregon, Algonquin, Belvidere, Downers Grove, Coal City, Fowler, and Rochelle