Weather Alerts For Momence, IL

# HEADLINE -------------------- HEAT ADVISORY IN EFFECT FROM NOON CDT TO 9 PM CDT TUESDAY HEAT ADVISORY IN EFFECT FROM NOON CDT TO 9 PM CDT WEDNESDAY # DETAILS -------------------- WHAT Peak heat indices of 100 to 105 degrees expected Tuesday and Wednesday afternoons. WHERE Portions of northern and central Illinois near and south of I-80, as well as all of northwest Indiana. WHEN For the first Heat Advisory, from noon CDT to 9 PM CDT Tuesday. For the second Heat Advisory, from noon CDT to 9 PM CDT Wednesday. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ISSUED AT Monday, August 31, 2026 at 12:24 PM 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 -------------------- Porter, Southern Cook, Benton, Eastern Will, Ford, Grundy, Iroquois, Jasper, Kankakee, Kendall, La Salle, Lake IN, Livingston, Newton, Northern Will, Southern Will Including the cities of Pontiac, Gibson City, Bolingbrook, Fowler, Mendota, Oswego, Bourbonnais, Ottawa, Plano, Crete, Peotone, Hammond, Kankakee, Fairbury, Chesterton, Joliet, Oxford, Streator, DeMotte, Mokena, Oak Forest, Rensselaer, Orland Park, Marseilles, Gilman, La Salle, Lemont, Wilmington, Roselawn, Morris, Beecher, Portage, Park Forest, Morocco, Yorkville, Minooka, Dwight, Valparaiso, Channahon, Paxton, Bradley, Manhattan, Gary, Merrillville, Coal City, Plainfield, Watseka, Calumet City, and Kentland

Pollen Index: 10.7 Pollen Level: high Predominant Pollen: Ragweed, Chenopods and Nettle. The pollen levels for Tuesday will be rising and extend even further into the extremely high range. This forecast of higher pollen concentration is based on higher temperatures and windy conditions.