Springfield, Illinois – Residents across central and southeast Illinois are facing dangerous heat through Thursday, with heat index values soaring as high as 110°F in several cities. Emergency officials warn the extreme temperatures could pose significant health risks, especially for children, the elderly, and those without reliable access to air conditioning.
According to the National Weather Service in Lincoln, the highest heat index readings are expected today and Thursday afternoon, impacting major areas like Springfield (106°F), Peoria (110°F), Quincy (106°F), Champaign (108°F), and Mount Vernon (107°F). The advisory covers a wide stretch from Chicago and Rockford down to Effingham and St. Louis. Heat is forecast to ease slightly by Friday as temperatures return closer to seasonal norms.
Local authorities urge residents to never leave kids or pets unattended in vehicles, drink plenty of water—even if not thirsty—and take frequent breaks in the shade or air conditioning. Power demand may spike during peak hours, and vulnerable groups should check in on neighbors or family. This stretch of triple-digit heat follows a pattern similar to last summer’s mid-July surge.
Heat advisories remain in effect through Thursday evening, with additional updates possible if high temperatures persist. Stay tuned to local weather alerts and limit outdoor activity during peak heat hours.
