Cheyenne, WY Noise Ordinances: Decibel Limits (2026)
Key Facts
- General limit
- 80 decibels, A-weighted scale
- Heavy truck limit
- 88 decibels, 10,000+ lb vehicles
- Measurement distance
- 25 feet from the noise source
- Maximum penalty
- $750 fine, misdemeanor
- Relief permit fee
- $15, issued by city clerk
Summary
Cheyenne caps noise at 80 decibels on the A-weighted scale, measured at least 25 feet from the source; heavy trucks of 10,000 pounds or more get an 88-decibel threshold on truck routes and during set daytime hours elsewhere.
C. A noise measured or registered as provided above from any source other than as provided in this chapter, more than eighty (80) decibels on the "A" weighting scale in intensity is declared to be excessive and unusually loud and is unlawful.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 73).
Full Breakdown
Cheyenne's noise code sets an objective decibel ceiling under Chapter 8.56.040: any noise measured at least 25 feet from its source, using a standard A-weighted sound level meter, that reads above 80 decibels is declared excessive and unlawful. Trucks weighing 10,000 pounds or more get an 88-decibel threshold on truck routes at all times, or elsewhere from 7 a.m. to 6 p.m., Monday through Saturday. A violation of the underlying prohibition in 8.56.010 is a misdemeanor punishable by up to a $750 fine, and the city clerk issues relief permits for $15 under 8.56.060.
Violations & Fines
Exceeding 80 dB (88 dB for heavy trucks) violates 8.56.010, a misdemeanor punishable by a fine up to $750; measurement isn't required if the noise is unusually loud by ear.
Frequently Asked Questions
What is Cheyenne's noise decibel limit?
Can I get a permit for a loud event in Cheyenne?
Sources & Official References
Other rules in Cheyenne
Compare Cheyenne to another location·View the Wyoming noise ordinances overview
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