Noise Ordinances in Ontario, CA (2026)
9 verified noise ordinances for Ontario, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Quiet Hours
Ontario enforces nighttime quiet under OMC Title 5 Chapter 29. Loud or intrusive noise that disturbs the peace between 10 PM and 7 AM is stricter enforced, coordinated by Ontario Police and Code Enforcement.
Ontario Quiet Hours
Some RestrictionsConstruction Hours
Ontario limits construction noise under OMC 5-29.09. Allowed hours are 7 AM to 8 PM weekdays and 8 AM to 6 PM Saturday. Sunday and holiday work near residences is restricted absent a waiver.
Ontario Construction Hours
Some RestrictionsBarking Dogs
Ontario treats persistent barking as a nuisance under OMC Title 6 and the noise ordinance. Animal Services investigates, warns owners, and can escalate to administrative citations for continued disturbance.
Ontario Barking Dog Rules
Some RestrictionsLeaf Blower Rules
Ontario regulates leaf blowers through its noise ordinance and daytime equipment hours. Gas blowers remain legal to operate, but California AB 1346 bars new gas SORE sales statewide since 2024, phasing them out.
Ontario Leaf Blower Rules
Some RestrictionsAmplified Music & Events
Ontario restricts amplified music under OMC 5-29.07 and special-event rules. Outdoor amplified sound that disturbs neighbors can be cited anytime, with stricter nighttime enforcement from 10 PM to 7 AM.
Ontario Amplified Music Rules
Some RestrictionsAircraft Noise
Aircraft noise from Ontario International Airport (ONT) is regulated by the FAA, not the city. ONT runs an FAA Part 150 noise compatibility program; federal preemption bars local restrictions on flights.
Ontario Aircraft Noise Rules
Few RestrictionsIndustrial Noise
Ontario controls industrial and warehouse noise through zoning-based exterior sound limits and the nuisance ordinance. Noise crossing into residential zones faces daytime limits and stricter nighttime limits.
Ontario Industrial Noise Rules
Some RestrictionsDecibel Limits
Ontario applies exterior decibel standards set in zoning and noise rules. Residential limits are about 55 dBA daytime and 50 dBA nighttime at the property line, with higher limits in commercial and industrial zones.
Ontario Decibel Limits
Some RestrictionsOutdoor Music
Outdoor music is regulated under OMC Title 5 Chapter 29 and the special-event permit process. Venues and events with amplified sound need a city permit; residential outdoor music cannot disturb neighbors after 10 PM.
Ontario Outdoor Music Rules
Some RestrictionsLooking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Ontario city rules.
Noise Ordinances in San Bernardino County →