On April 30, 2025 — the 30th annual International Noise Awareness Day — the Noise Project announced the deployment of the first in a planned city-wide network of sound monitors, designed to ascertain both baseline sound levels and daily / weekly / seasonal noise trends around Providence. The goal is to: 1) identify areas where residents face the most persistent exposure to unhealthy noise, and thus where the city should focus its abatement efforts, and 2) determine how effective those efforts actually are.
Current Residential Sound Levels in Decibels (dB)1
Use your cursor to view specific decibel levels and scroll back 24 hours, or click on the date display to view a different day. You can also click on the different colored “weighting” icons — A, C, and Z — to see how they compare. For more details on weightings, see footnote 1.
We added a second monitor on the opposite side of the city in the Fall, with more to come in 2026. In the relatively short time the initial monitors have been operating, they have consistently registered:
- Median daily noise levels well above municipal sound limits for Providence’s residential areas — including and especially late at night.
- A significant daily rise in noise levels prior to 5:00 a.m. — instead of at 7:00 a.m., as stipulated by the city’s sound ordinance. This results almost entirely from early-rising owners of deliberately loud vehicles (see more details on these sources below).
- Recurrent daily peaks between 80 and 90 decibels — which is much more than twice as loud2 as legal limits allow — both during the day and at night, and regularly exceeding 90 dB. This impulsive (sudden) noise is associated with sleep disruption / deprivation and adverse cardiac health.
All three findings are consistent with related research in Boston conducted nearly 10 years ago, indicating that Providence has similar noise issues to a major U.S. city many times its size.
Not surprisingly, the observed sources of most of the noise data collected by the sound monitors are motor vehicles with modified mufflers or over-amplified audio systems — the two most-prevalent noise sources that Providence residents report in the city.
The sound data indicate that at the end of Mayor Brett Smiley’s third year in office — and despite his declared intent to reduce excessive noise in the city — volume levels from chronic sources such as vehicles, house parties, and commercial establishments remain significantly higher than allowed by city ordinances, on an ongoing basis.
Mayor Smiley is running for re-election in 2026, and will undoubtedly tout improvements to quality of life — including reducing noise — as one of the key accomplishments of his first term. Yet without knowing what the city’s sound levels actually were before and are now, it’s difficult for residents and voters to determine if his noise-reduction policies have been effective,3 and he deserves a second term.
Smiley can — and almost certainly will — claim that Providence is quieter now than it was before he became mayor, but can he actually prove that, and how? And even if he could somehow show that the city is less noisy, how would residents know that it’s due to his efforts (such as they are), and not something he has no control over?
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1 All three colored icons and corresponding data lines represent the exact same sound data, but two are “weighted” (filtered) for different frequency ranges. The green line is what is called “A-weighting,” which emphasizes frequencies that correspond to the human voice — but excludes lower-range “bass” ones. The orange line is “C-weighted,” which retains more of the low-frequency bass that comprises most noise in Providence. The blue line is called “Z-weighted,” but is actually unweighted (i.e., the “raw” sound data with no weighting).
Like most U.S. municipalities, Providence bases its noise measurements on A-weighted data that, as the graph above demonstrates, usually depicts noise levels as being significantly lower than either C-weighted or unweighted data, and thus inaccurately represents actual noise levels in the city. For more details on sound weighting — including a visual depiction of the various weightings — and the exponential decibel scale (see footnote 2 below), visit our “How Sound is Measured” page.
2 Contrary to popular misconception, decibels (dB) are not a linear scale — i.e., one that increases at a constant rate, such that a sound peak that’s twice as high in dB is therefore twice as loud — but instead are logarithmic (exponential), which means that a sound peak that’s 35+ dB higher than Providence’s 55-dB night-time limit is not approximately 60% louder, but actually more than 100 times the legal maximum, and thus can easily penetrate nearby buildings and wake sleeping residents.
3 In response to the Noise Project’s survey of Providence mayoral candidates in 2022, Smiley stated that, “As part of a review of the noise level in our city and improved enforcement, noise should be measured on an ongoing basis in order to produce consistent data.” (Emphasis added.) Simply put, he said the city should actively collect ambient sound data over time.
On the basis of their responses to our survey questions, we endorsed both Smiley and Nirva LaFortune in the 2022 election. After being elected, however, the Smiley administration has not measured noise levels — nor announced any intention to do so. Providence voters should keep that in mind in 2026: Do not rely on what the mayor says, but on what he actually does.