Weather Alerts For Monticello, IL

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO MIDNIGHT CDT THURSDAY NIGHT # DETAILS -------------------- WHAT Heat index values around 105. WHERE Portions of central and east central Illinois. WHEN From 11 AM Monday to midnight CDT Thursday Night. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ISSUED AT Sunday, June 28, 2026 at 1:42 PM CDT ISSUED BY National Weather Service Lincoln 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. Monitor the latest forecasts and warnings for updates. # AREAS AFFECTED -------------------- Douglas, Champaign, Clark, Coles, De Witt, Edgar, Marshall, McLean, Piatt, Vermilion, Woodford Including the cities of Eureka, Normal, Bloomington, Marshall, Tuscola, Urbana, Charleston, Champaign, Paris, Danville, Monticello, Mattoon, Clinton, and Lacon