California Ranked Third Loudest State in Noise Study
A new report identifies California as the third noisiest state, with the Monterey area ranking as the second loudest in the U.S.
Updated on Oct. 9, 2026 in Severe Weather
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A study using U.S. National Transportation Noise Map data has ranked California as the third loudest state in the country. The Monterey area specifically registered noise levels of 70.27 decibels, making it the second noisiest metropolitan area in the United States.
Why it matters
The EPA considers outdoor noise levels above 55 decibels to be an annoyance, while sustained noise exceeding 70 decibels presents a legitimate risk for hearing loss. These findings highlight the significant impact of road, railway, and airport infrastructure on public health across the state.
The Monterey area registers noise levels of 70.27 decibels, while Los Angeles and Orange Counties record 67.27 decibels. The data highlights a stark contrast to the quietest states, such as Connecticut, which recorded a maximum reading of just 54.85 decibels.
The players
Alpine Hearing Protection
This is a company that specializes in hearing conservation products and released this research report utilizing public noise maps.
Environmental Protection Agency
This is the federal agency responsible for setting guidelines regarding environmental noise and public health impacts.
The details
Alpine Hearing Protection compiled this study by measuring noise generated by transportation infrastructure including roads, railways, and airports. The findings place California behind only Texas and Nevada in terms of national noise levels.
Timeline
The noise study was released to the public in October 2026.
A stress study identified least-stressed cities in California during 2024.
Seasonal Patterns
This study follows established data trends set by the U.S. National Transportation Noise Map, which tracks infrastructure-related audio pollution across the country. The results indicate that California remains significantly above the 55-decibel annoyance threshold established for the nation.
Residents living in high-decibel areas like Monterey should consider indoor soundproofing measures to mitigate the risks of hearing loss. Consult with local health officials regarding community-level noise ordinances if ambient levels consistently impact daily well-being.
The takeaway
Understanding your local noise environment is a critical step in managing long-term auditory health and daily stress levels. Residents can advocate for quieter infrastructure planning as metropolitan noise levels continue to influence quality of life.
Further reading
For additional context on how environmental conditions affect the region, visit the Severe Weather section.
Source note: This article includes information reported by New York Post.
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