Quiet hours in Naperville, IL — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Naperville enforces quiet hours from 7 PM to 7 AM under Title 6 Chapter 14 performance standards. Noise is measured at the property line using ANSI-standard equipment. Residential and commercial zones have distinct decibel thresholds during day and night periods.
Naperville Municipal Code Title 6, Chapter 14 (Performance Standards) regulates noise by zone and time of day. Noise is measured at the property line of the parcel generating the sound using equipment conforming to ANSI S1.4-1983 specifications. Quiet hours run from 7 PM to 7 PM. Residential zones have lower decibel limits than commercial or industrial zones. Light industrial zones cannot exceed 70 dBA and industrial zones cannot exceed 80 dBA. Amplified sound equipment used with a valid permit under Title 3, Chapter 9 is exempt from the standard limits. Block parties permitted under Title 9, Chapter 4 also receive temporary noise exemptions. Violations are enforced by Naperville Police non-emergency at (630) 420-6666.
General ordinance violation fines apply. Repeat offenses may result in escalating penalties. Nuisance abatement proceedings possible for chronic violators under municipal code enforcement provisions.
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See how Naperville's quiet hours rules stack up against other locations.
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