Weather Alerts For Heyworth, IL

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY NIGHT # DETAILS -------------------- WHAT Heat index values 105 to 110 expected. WHERE All of central and southeast Illinois. WHEN Until midnight CDT Thursday Night. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ADDITIONAL DETAILS The cumulative effects of this prolonged heat will pose a serious public health risk, especially for individuals outdoors or without adequate air conditioning. ISSUED AT Monday, June 29, 2026 at 1:45 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. # AREAS AFFECTED -------------------- Clay, Coles, Menard, Schuyler, Cass, Champaign, Christian, Clark, Crawford, Cumberland, De Witt, Douglas, Edgar, Effingham, Fulton, Jasper, Knox, Lawrence, Logan, Macon, Marshall, Mason, McLean, Morgan, Moultrie, Peoria, Piatt, Richland, Sangamon, Scott, Shelby, Stark, Tazewell, Vermilion, Woodford Including the cities of Bloomington, Charleston, Galesburg, Danville, Lawrenceville, Jacksonville, Pekin, Peoria, Springfield, Tuscola, Havana, Shelbyville, Winchester, Decatur, Champaign, Effingham, Olney, Monticello, Taylorville, Newton, Greenup, Canton, Eureka, Rushville, Clinton, Mattoon, Urbana, Normal, Paris, Toulon, Flora, Lacon, Marshall, Sullivan, Beardstown, Petersburg, Robinson, and Lincoln