Sep 3, 2025 - News

Noise study reveals Portland's loudest neighborhoods

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Map showing 24-hour average noise levels in Portland area with colors from green (44 dB) in quiet areas to red (86 dB) along busy roads and highways, including bridges and downtown.

The loudest parts of the city are where you might expect, but the health impacts of noise pollution might surprise you. Image: Courtesy of Oregon State University

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