SmogRank / World / United States / Oregon / November 2024
Most polluted cities in Oregon, United States, November 2024
40 cities in Oregon, United States ranked by their average PM2.5 over the 30 days. Worst: Salem at 9.7 µg/m³, #895 of 2,572 cities in the world. Cleanest: Roseburg at 3.2. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Salem 10%
- 2Woodburn 7%
- 3Hermiston 7%
- 4Tigard 3%
- 5Canby 3%
- 6Coos Bay 3%
- 7Medford 0%
- 8Grants Pass 0%
- 9Prineville 0%
- 10Cottage Grove 0%
- 11Milwaukie 0%
- 12Eugene 0%
- 13Stayton 0%
- 14Ontario 0%
- 15Albany 0%
- 15Hillsboro 0%
- 15Madras 0%
- 18Altamont 0%
- 18Hood River 0%
- 20Sweet Home 0%
- 21The Dalles 0%
- 22McMinnville 0%
- 23Silverton 0%
- 24Beaverton 0%
- 25Baker City 0%
- 25Portland 0%
- 27Pendleton 0%
- 28Dallas 0%
- 29Bend 0%
- 30Gresham 0%
- 30La Grande 0%
- 30Newport 0%
- 33Ashland 0%
- 33Forest Grove 0%
- 35North Portland 0%
- 36Corvallis 0%
- 37Talent 0%
- 38Florence 0%
- 39Brookings 0%
- 40Roseburg 0%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
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SmogRank, most polluted cities in Oregon, United States, PM2.5, November 2024, smogrank.com/us/region/oregon/history/2024-11 (accessed 6 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.