San Jacinto, CA Noise Ordinances: Quiet Hours (2026)

San Jacinto Municipal Code § 8.40.080 is the city's general disturbance rule. It makes it unlawful for any person or property owner to make, cause or allow any loud, excessive, impulsive or intrusive noise, disturbance or commotion that disturbs the peace or quiet of any area, or that causes discomfort or annoyance to any reasonable person of normal sensitivities. The examples include yelling, shouting, hooting, whistling, singing, playing a musical instrument, and loud music from any mechanical or electrical sound-making or sound-amplifying device. Section 8.40.070(H) sends noise from people and music at a party on a residential property to this section.

The section itself prints no clock-hour curfew. Instead subsection B lists ten factors: the level of the noise, the ambient level, proximity to residential or commercial sleeping areas, the nature and zoning of the area, density of inhabitation, the time of day and night, duration, whether the noise is constant, recurrent or intermittent, whether it is commercial or noncommercial, and whether the use is lawful and the noise reasonably expected from it. Where a measured standard is needed, the overnight window is 10:00 p.m. to 7:00 a.m. in § 8.40.050, where single-family properties are held to 45 dBA at night against 65 dBA by day.

Proof is specific. Under § 8.40.190(C), for a § 8.40.080 violation a peace officer must either obtain declarations under penalty of perjury from two declarants living in separate dwelling units, each a resident within two hundred (200) yards of the noise source who has heard the noise for substantially long periods within the past month to the extreme annoyance of the declarant, or personally hear the sound and give evidence at trial or hearing. Other hour-based rules sit elsewhere in the chapter: sound trucks are barred from eight p.m. to eight a.m. under § 8.40.130, and construction under § 8.40.090 runs seven a.m. to seven p.m. on weekdays and Saturdays.