Naperville, Illinois, United States (City)     Current Local Time: In 24-hour Notation: Tue., Apr. 15, 2025 04:15:08 P.M. CDT Tue., Apr. 15, 2025 16:15:08 CDT Local Time Zone: America/Chicago Currently Observing: Daylight Savings Time Universal Coordinated Time: Tue., Apr. 15, 2025 21:15:08 UTC/GMT

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z