Weld County, CO Noise Ordinances: Quiet Hours (2026)
Quiet hours in Weld County, CO, also called the noise ordinance, nighttime noise rules, or residential quiet time, define the hours during which excessive noise is prohibited.
Key Facts
- Weld night limit
- 50 dB(A), 9 p.m.-7 a.m.
- Weld day limit
- 55 dB(A), 7 a.m.-9 p.m.
- Greeley device curfew
- 10 p.m.-7 a.m.
- Greeley standard
- Plainly audible at property line
- Applies to
- County and city, separately
Summary
In unincorporated Weld County, residential noise may not exceed 50 dB(A) from 9 p.m. to 7 a.m. (55 dB(A) by day). In Greeley, sound-reproduction devices plainly audible at a property line between 10 p.m. and 7 a.m. are unlawful.
Between the hours of 9:00 p.m. and 7:00 a.m., the noise levels set forth above may be exceeded by up to ten (10) decibels for up to fifteen (15) minutes in a one-hour period.
D. Vehicles operating in the public right-of-way are subject to the following maximum noise levels:
Vehicle Class (GVWR)
Maximum Noise in Speed Limit 35 m.p.h. or less zone
Maximum Noise in Speed Limit over 35 m.p.h. zone
Manufacturer's gross vehicle weight rating (MGWR) over 10,000 pounds (4,536 kg), or any combination of vehicles towed by such motor vehicle
86
90
Any other motor vehicle or any combination of vehicles towed by any motor vehicle, including but not limited to automobiles, motorcycles, vans or light trucks, with a gross vehicle weight rating (GVWR) less than 10,000 pounds (4,536 kg)
80
84
E. No person shall operate, anywhere in the County, any vehicle that is not equipped with a muffler in constant operation which is properly maintained to prevent noise in excess of that set forth in this Section; nor shall any person operate, in unincorporated Weld County, any vehicle having a muffler that has been equipped or modified with a cutoff, bypass or similar device or modification.
(Weld County Code Ordinance 2008-4)
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Charter and County Code: Supplement 95).
Full Breakdown
Weld County Code Sec. 14-9-40 sets a 50 dB(A) nighttime cap (9 p.m.-7 a.m.) for residential and commercial property, versus 55 dB(A) by day; the limit may be exceeded by up to 10 dB for 15 minutes per hour. Greeley Municipal Code Sec. 12-329 bars radios, TVs, instruments and similar devices that are plainly audible at your property boundary, or through party walls, between 10 p.m. and 7 a.m. Each applies only in its own jurisdiction: the county governs unincorporated land, Greeley governs inside city limits.
Violations & Fines
Weld: Class II petty offense, escalating $30/$60/$300 fines plus a $10 surcharge. Greeley Sec. 12-329 device violations are misdemeanor infractions.
Frequently Asked Questions
What are quiet hours in unincorporated Weld County?
Does Greeley have set quiet hours?
Sources & Official References
Other rules in Weld County
How Weld County compares: Cities with the Strictest Noise Ordinances·Compare Weld County to another location·View the Colorado noise ordinances overview
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