Whittier, CA Noise Ordinances: Quiet Hours (2026)

Whittier Municipal Code Chapter 8.32 (Noise Control) does not use a single curfew clock. Instead it defines "Daytime" as 7 a.m. to 9 p.m. on weekdays and 9 a.m. to 9 p.m. on Saturdays, Sundays, and local legal holidays (WMC 8.32.020). "Nighttime" is every hour outside those windows. Several prohibitions in WMC 8.32.040 apply specifically during nighttime hours, and the code states that late-night disturbances of any kind that are plainly audible by occupants of adjacent or neighboring residences, or plainly audible 50 feet from a real property boundary, are prima facie evidence of a violation when they occur during nighttime hours. Independently of the clock, WMC 8.32.030 makes it unlawful at any hour to make excessive or unreasonable noise that disturbs the peace of a neighborhood or annoys a reasonable person of normal sensitiveness. For loud parties, the Whittier Police Department typically uses Whittier Municipal Code Chapter 9.56, issuing a "first response to host" notice directing the host to abate the noise before further action is taken. Unlike some cities, Whittier's noise chapter contains no numeric decibel limits, so officers assess violations by their normal hearing faculties (WMC 8.32.060).