Des Plaines, IL Noise Ordinances: Quiet Hours (2026)
Quiet hours in Des Plaines, IL, also called the noise ordinance, nighttime noise rules, or residential quiet time, define the hours during which excessive noise is prohibited.
Key Facts
- Code Section
- Des Plaines City Code 6-2-7(E)(3)-(4)
- Weeknight quiet hours
- 10:00 P.M. - 7:00 A.M.
- Pre-weekend/holiday quiet hours
- 11:00 P.M. - 10:00 A.M.
- Nighttime lot-line limit
- 50 dBA (40 dBA inside another structure)
- Enforcement
- Trained Des Plaines Police using ANSI sound meter
Summary
Des Plaines City Code 6-2-7(E)(3) sets quiet hours from 10:00 P.M. to 7:00 A.M. on weeknights, and from 11:00 P.M. to 10:00 A.M. before Saturdays, Sundays, and official city holidays. During quiet hours, sound crossing a lot line above 50 dBA (or 40 dBA inside another structure) is excessive noise.
3. "Quiet hours" means the period of time beginning at ten o'clock (10:00) P.M. and ending at seven o'clock (7:00) A.M. the following day, unless the following day is a Saturday, Sunday or official city holiday, in which case "quiet hours" means the period of time beginning at eleven o'clock (11:00) P.M. and ending at ten o'clock (10:00) A.M. the following day. Official city holidays are New Year's Day, Martin Luther King Day, Presidents' Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, day after Thanksgiving Day, and Christmas Day.
Full Breakdown
Des Plaines uses a decibel-keyed quiet-hours regime codified in City Code Title 6, Chapter 2, Section 6-2-7 (Noise). ' The listed official city holidays are New Year's Day, Martin Luther King Day, Presidents' Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, the day after Thanksgiving, and Christmas. During quiet hours, Section 6-2-7(E)(4) makes it excessive noise for sound from a property to exceed 50 dBA at or beyond the lot line, or 40 dBA inside another structure; for sound from a source not on a property (such as a vehicle on the right of way) the threshold is 50 dBA more than 30 feet away. Only trained police or authorized city employees using an ANSI type 1 or type 2 sound meter take the measurements (6-2-7(E)(1)-(2)).
Violations & Fines
Violators are fined under the general penalty in City Code Title 1, Chapter 4, for each offense (6-2-7(G)).
Frequently Asked Questions
When are quiet hours in Des Plaines?
How loud is too loud at night?
Who measures the noise?
Sources & Official References
Other rules in Des Plaines
How Des Plaines compares: Cities with the Strictest Noise Ordinances·Compare Des Plaines to another location·View the Illinois noise ordinances overview
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Quiet Hours in Nearby Cities
How other cities in Cook County handle quiet hours.