Quiet hours in Springfield, IL — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Springfield does not set clock-based quiet hours by decibel. Instead, City Code section 98.01(a) declares any sound that interferes with the peace, comfort, or quiet enjoyment of any person a nuisance, enforceable at any hour.
Springfield, Illinois regulates residential noise through a general nuisance standard rather than fixed numeric quiet hours. Title IX, Chapter 98 (Nuisances), section 98.01 declares it a nuisance to maintain within the city 'Sound, animals, or things which interfere with the peace or comfort or disturb the quiet enjoyment of any person in the city.' Because the standard is conduct-based, it applies day or night whenever noise disturbs a person's quiet enjoyment, and enforcement turns on whether the disturbance is documented. Illinois does not run a statewide quiet-hours program for cities; the Illinois EPA confirms it has no active noise-control program, so day-to-day noise enforcement is left to local police under the city nuisance code, backstopped by the state Environmental Protection Act (415 ILCS 5/24), which prohibits emitting noise beyond one's property line that unreasonably interferes with the enjoyment of life in violation of Pollution Control Board standards (35 Ill. Adm. Code Subtitle H).
Under section 98.999, a violation of Chapter 98 is punishable by a fine not to exceed $500 per violation, with each day a separate offense; abated violations carry tiered minimums of $150 (first), $300 (second within 24 months), and $500 (third+).
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