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Chicago noise ordinance: quiet hours, limits and complaints

Last updated: August 11, 2026

Quiet hours in Chicago

Chicago does not have one single "quiet hours" window. Chapter 8-32 sets several overlapping night windows by source. The general catch-all in Section 8-32-150 runs from 8:00 p.m. to 8:00 a.m., and during those hours no one may generate noise on the public way, or on private open space, that is louder than average conversational level measured 100 feet away (from the source on the public way, or from the property line for private open space). Note that 8-32-150 is expressly residual: by its own opening words it applies only "For any noise source not specifically addressed in Part B of this chapter, except where exempted or excluded by section 8-32-170." Amplified sound and music on private open space is restricted from 10:00 p.m. to 8:00 a.m. under Section 8-32-070(b), using the same conversational-level-at-100-feet test. Loading, unloading and handling of dumpsters, garbage cans, crates and building materials is barred from 10:00 p.m. to 7:00 a.m. where it causes a "noise disturbance" in a residential district or noise sensitive zone (Section 8-32-130). Construction has its own separate window: Section 8-32-140(a) prohibits any fuel-powered or electric equipment or tool used in building, construction, repair or demolition between 8:00 p.m. and 8:00 a.m. when within 600 feet of any residential building or hospital, with no exception for weekends. The 55/70 dB(A) mechanical equipment limits in Section 8-32-090 also apply only from 8:00 p.m. to 8:00 a.m. Amplified sound on the public way (Section 8-32-070(a)) is restricted around the clock. Amplified sound from liquor-licensed and public-place-of-amusement businesses (Section 8-32-080) is also restricted around the clock, EXCEPT that an Outdoor Entertainment Venue is not bound by the restriction from 10:00 a.m. to 10:00 p.m. Where two sections conflict, Section 8-32-040 provides that the most restrictive limit applies.

Decibel limits

There is no general decibel limit in the Chicago Noise Ordinance. The ordinance contains exactly one numeric dB standard, in Section 8-32-090 (Mechanical stationary sources), and it does not vary by zoning district. It caps sound from "mechanical stationary equipment" at 55 dB(A) measured 100 feet or more away, or 70 dB(A) measured 10 feet or more away, and the measurement must be taken from a location that is not on the same parcel or premises as the equipment. That limit applies only between 8:00 p.m. and 8:00 a.m. unless the Department of the Environment has issued a permit setting different operating hours. "Mechanical stationary equipment" is defined as any single or group of machines or devices operated by fuel or electric power that does not change locations in the course of its use, "including, but not limited to, air handling units and refrigeration units", and expressly including generators on parked vehicles or trailers; because Section 8-32-020 separately defines "air handling unit" to include any air conditioner, ventilation fan or exhaust fan, and "refrigeration unit" to include any air conditioner or compressor used with a refrigerator or freezer, the limit reaches ordinary HVAC and refrigeration gear. Generators running during a loss of normal power supply are exempt. Every other noise source in the ordinance is judged by an audibility standard rather than a meter: "louder than average conversational level at a distance of 100 feet" for music, amplified sound, licensed entertainment venues and the general catch-all; "audible at a distance of 600 feet or more from the source" for the defined term "noise disturbance"; and "clearly audible to a person with normal hearing at a distance greater than 75 feet" for car stereos under Section 9-76-145. Critically, the code defines the benchmark in words, not numbers: Section 8-32-020 says "Average conversational level" means a level at which normal, unamplified speech is clearly and distinctly audible above ambient noise level. Do not substitute a decibel figure for that phrase. (A 2007 Department of Environment rule did deem average conversational level to be 60 dB(A), but it interpreted the since-repealed Article XXI and is not current law under Chapter 8-32 — see notes.)

What the ordinance actually says

8-32-150 (opening): "For any noise source not specifically addressed in Part B of this chapter, except where exempted or excluded by section 8-32-170, the following general limitations shall apply:"

8-32-150(a): "Between 8:00 p.m. and 8:00 a.m., no person shall generate any noise on the public way that is louder than average conversational level at a distance of 100 feet or more, vertically or horizontally, from the source."

8-32-150(b): "Between 8:00 p.m. and 8:00 a.m., no person shall generate any noise on any private open space that is louder than average conversational level at a distance of 100 feet or more, measured from the property line of the property from which the noise is being generated."

8-32-020: "'Average conversational level' means a level at which normal, unamplified speech is clearly and distinctly audible above ambient noise level."

8-32-020: "'Noise disturbance' means any sound which is audible at a distance of 600 feet or more from the source."

8-32-020: "'Private open space' means any area on private property that is open to the outdoors, including but not limited to backyards, front yards, gangways and structures with windows and/or doors open to the outdoors."

8-32-090(a): "No person shall operate or permit operation of any mechanical stationary equipment in such a manner as to generate sound having a sound pressure level greater than 55 dB(A) when measured from a distance of 100 feet or more from the mechanical stationary equipment, or 70 dB(A) when measured from a distance of 10 feet or more from the mechanical stationary equipment. The place of measurement shall be a location that is not on the same parcel of real property or premises on which the mechanical stationary equipment is located."

8-32-090(c): "The limitation contained in this section shall apply from 8:00 p.m. to 8:00 a.m., unless the mechanical stationary equipment is subject to other operating hours pursuant to a permit or other written authorization issued by the Department of the Environment."

8-32-070(b): "Between the hours of 10:00 p.m. and 8:00 a.m., no person on any private open space shall employ any device or instrument that creates or amplifies sound, including but not limited to any loudspeaker, bullhorn, amplifier, public address system, musical instrument, radio or device that plays recorded music, to generate any sound, for the purpose of communication or entertainment, that is louder than average conversational level at a distance of 100 feet or more from the property line of the property from which the noise is being generated."

8-32-080(a): "No establishment holding a liquor license pursuant to Chapter 4-60 of this Code, or a public place of amusement license pursuant to Article III of Chapter 4-156 of this Code, shall operate or permit operation of any equipment or device that electronically amplifies sound so as to generate sound louder than average conversational level at a distance of 100 feet or more from the property line of the property from which the noise is being generated, with the exception that an Outdoor Entertainment Venue shall not be bound by this restriction from 10:00 a.m. to 10:00 p.m."

8-32-140(a): "No person shall use or cause the use of any mechanical equipment or tool operated by fuel or electric power in building, construction, repair or demolition operations between the hours of 8:00 p.m. and 8:00 a.m. within 600 feet of any residential building or hospital."

8-32-130: "No person shall undertake or cause the loading, unloading, opening, closing or other handling of boxes, crates, containers, building materials, garbage cans, dumpsters or similar objects between the hours of 10:00 p.m. and 7:00 a.m. in such a manner as to cause a noise disturbance within a residential district or within a noise sensitive zone."

8-32-170(g): "Human voices. The limits set forth in this chapter do not apply to noise created by unamplified human voices."

8-32-050(a): "Unless otherwise specifically provided, a violation of this chapter is subject to a fine of $300.00 for a first offense, $500.00 for a second offense committed within a one-year period, and $1,000.00 for a third or subsequent offense committed within a one-year period."

9-76-145(a) (first sentence): "No person shall play, use, operate, or permit to be played, used or operated, a device for receiving broadcast sound or reproducing recorded sound in any motor vehicle on the public way in a manner or at a volume such that the sound generated by the device is clearly audible to a person with normal hearing at a distance greater than 75 feet."

7-12-100 (first sentence): "It shall be unlawful for any person who owns, controls, has possession of or is charged with the responsibility for caring for any dog or other animal to allow such animal to make excessive noise in a manner that unnecessarily disturbs the comfort, quiet, peace or repose of any other person in the vicinity, at any time of the day or night."

7-12-100 (definition): "the term 'excessive noise' means any continued, repeated or habitual barking, whining, crying, howling, whimpering, crowing, or loud noise common to an animal's species that exceeds ten consecutive minutes in duration or occurs intermittently for a significant portion of the day or night, that is louder than average conversational level at a distance of 100 feet or more."

Quoted verbatim from the official codified text (Municipal Code of Chicago, Title 8 (Offenses Affecting Public Peace, Morals and Welfare), Chapter 8-32 "Noise and Vibration Control", self-titled the Chicago Noise Ordinance at Section 8-32-010. Part A, General Provisions (8-32-010 short title; 8-32-020 definitions, including "average conversational level", "noise disturbance", "private open space", "air handling unit", "refrigeration unit" and "mechanical stationary equipment"; 8-32-030 rulemaking; 8-32-040 most restrictive limit controls; 8-32-050 fines, compliance plans and preserved nuisance actions; 8-32-060 and 8-32-065 designation and list of noise sensitive zones). Part B, Limitations on Noise from Specific Sources (8-32-070 music and amplified sound; 8-32-080 regulated entertainment businesses; 8-32-090 mechanical stationary sources, the only numeric dB standard; 8-32-100 emergency signal devices; 8-32-110 non-emergency signal devices; 8-32-120 restrictions within noise sensitive zones; 8-32-130 loading and unloading; 8-32-140 construction, repair or demolition equipment). Part C, Other Limitations (8-32-150 general residual limits; 8-32-160 earthshaking vibrations by zoning district; 8-32-170 exceptions and exclusions). Related provisions outside Chapter 8-32: Section 9-76-145 (broadcast or recorded sound in motor vehicles, 75-foot audibility), Section 9-76-140 (exhaust systems and mufflers), Section 9-76-150 (vehicle burglar alarms) and Section 7-12-100 (excessive animal noise). The predecessor noise ordinance, Chapter 11-4 Article XXI (Sections 11-4-2700 through 11-4-2920), was repealed by Coun. J. 11-16-11, p. 13798, Art. II, § 7 and now reads "ARTICLE XXI. RESERVED"; do not cite it.). Verified against the live code on 2026-08-11. Ordinances get amended — before acting on a specific provision, check the linked official code. This page is a plain-language summary, not legal advice.

How to file a noise complaint in Chicago

Call 311, use the CHI311 mobile app, or file online at 311.chicago.gov (if 311 will not connect from a cell phone, the city lists 312.744.5000). The city's own 311 FAQ draws the line this way, verbatim: "You should call 311 if the incident that you are reporting has occurred and the offender is gone from the scene. You should call 911 if the incident you are reporting is in progress and the on-site presence of a police officer is necessary to help resolve the matter (e.g., burglary in progress, incident involving injuries, quieting loud neighbors, etc.)." So an in-progress loud party is, by the city's own example, a 911 call, not a 311 call. Noise from HVAC, ventilation, exhaust or refrigeration equipment (Section 8-32-090) is handled by the Department of the Environment under the Chief Sustainability Officer rather than by police. Construction-hours violations (Section 8-32-140) can be cited by designated staff from police, buildings, business affairs and consumer protection, fire, finance, streets and sanitation, transportation, and planning and development. Barking-dog complaints under Section 7-12-100 generally need a complaint signed and sworn by residents of three different addresses, specifying the date and time, unless a city officer personally observes it. Section 8-32-050(d) preserves private common-law nuisance actions, so a resident retains a civil remedy independent of city enforcement.

Step by step, with what to log and what to expect after you file: how to file a noise complaint in Chicago. For the general playbook — documenting the problem, talking to a landlord or HOA, when 311 beats 911 — see the noise complaints guide.

Worth knowing

Several carve-outs materially change what is actually enforceable. Unamplified human voices are completely exempt under Section 8-32-170(g), so a shouting party or a loud argument is outside the ordinance entirely unless a speaker or instrument is involved. Also exempt: aircraft and airports, stadiums, mass transit, permitted fireworks displays, permitted parades, athletic events, public assemblies and outdoor special events between 8:00 a.m. and 10:00 p.m., and public performances held under a city special permit or authorized by another public entity on public land (8-32-170(d)(2)). Emergency construction and authorized public-improvement work is exempt from both the construction hours and the general limits. Licensed venues get a time carve-out too: under 8-32-080(a) an Outdoor Entertainment Venue is not bound by the 100-foot conversational-level limit from 10:00 a.m. to 10:00 p.m. Zoning matters at the edges: Section 8-32-170(h) exempts sounds measured within any manufacturing district (though sound generated in a manufacturing district and measured outside its boundary still counts), and Section 8-32-170(i) carves out the Stockyards Planned Manufacturing District (PMD 8). Earthshaking vibration limits in Section 8-32-160 do vary by zoning, requiring 300-foot setbacks from residence/business/commercial district boundaries and 150 feet from an M1 district in M2 and M3 districts, and those vibration limits do not apply to construction, demolition or repair work conducted after 8:00 a.m. and before 8:00 p.m. Chicago has statutory "noise sensitive zones" (Sections 8-32-060, 8-32-065, 8-32-120), currently eight specific street segments near Northwestern's Streeterville medical campus and around the West Washington/Desplaines area, where bullhorns, loud and raucous amplification, and sharp percussive noise are barred if they interfere with a school, library, place of worship, hospital or nursing home; the zones must be marked with conspicuous signs installed by CDOT. Separate provisions cover vehicles (Section 9-76-145 car stereos audible beyond 75 feet, fines $50/$100/$500; Section 9-76-140 mufflers and straight pipes, which can trigger vehicle seizure and impoundment and a $750 administrative penalty plus towing and storage fees), animals (Section 7-12-100, fine $50-$250, which requires either an officer's personal observation or a complaint signed and sworn by residents of three different addresses specifying date and time), stationary emergency alarm testing limited to the minimum cycle time and in no case more than four minutes, never before 9:00 a.m. or after 5:00 p.m. (Section 8-32-100), non-emergency bells and chimes limited to five minutes per hour in a residential district (Section 8-32-110), and vehicle burglar alarms limited to four minutes (Section 9-76-150). Penalties escalate sharply for businesses: $400 to $1,000 per day for licensed entertainment venues under Section 8-32-080, with possible liquor or public place of amusement licence suspension or revocation after a third violation in a year; $1,000 to $5,000 per day for mechanical equipment under Section 8-32-090, with owners and operators jointly and severally liable; and construction violations under Section 8-32-140(d) tiered at $1,000-$2,500 first, $2,500-$5,000 second within a year, and $5,000-$10,000 third and subsequent, each day a separate offense. Enforcement is split: the Superintendent of Police rulemaking authority under Section 8-32-030 expressly excludes Section 8-32-090, which the Chief Sustainability Officer enforces instead.

Document it before you report it

Chicago's limits are measured numbers, so a reading is direct evidence of how loud it really is. Take a quick reading with the free online decibel meter — it runs in your browser and records nothing — and check how loud your block is on the Chicago noise map. For time-stamped measurement history you can show a landlord or code officer, the app keeps a log.