Weather Alerts For Plano, IL

# HEADLINE -------------------- HEAT ADVISORY IN EFFECT FROM NOON CDT /1 PM EDT/ MONDAY TO 10 PM CDT /11 PM EDT/ WEDNESDAY # DETAILS -------------------- WHAT Heat index values around 105 expected each afternoon. WHERE Portions of central, east central, north central, and northeast Illinois and northwest Indiana. WHEN From noon CDT /1 PM EDT/ Monday to 10 PM CDT /11 PM EDT/ Wednesday. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ISSUED AT Sunday, June 28, 2026 at 2:47 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. # 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 Bradley, Portage, La Salle, Minooka, Hammond, Merrillville, Sycamore, Coal City, Kentland, Fowler, Mundelein, Crystal Lake, Carol Stream, Fairbury, Dwight, Woodstock, Belvidere, Joliet, Mokena, Elgin, Morris, Gary, Paxton, Valparaiso, Lombard, Watseka, Chesterton, Waukegan, Gilman, Oxford, DeMotte, Oregon, Dixon, Naperville, Buffalo Grove, DeKalb, Plainfield, Byron, Rochelle, Crete, Wilmington, Roselawn, Morocco, Bourbonnais, Gurnee, Yorkville, Ottawa, Marseilles, Wheaton, Plano, Beecher, Downers Grove, Oswego, Aurora, Mendota, Pontiac, Gibson City, Peotone, Rensselaer, Rockford, McHenry, Kankakee, Algonquin, Channahon, Bolingbrook, Streator, and Manhattan