SmogRank / World / United States / Washington / November 2023
Most polluted cities in Washington, United States, November 2023
46 cities in Washington, United States ranked by their average PM2.5 over the 30 days. Worst: Yakima at 13.7 µg/m³, #182 of 2,194 cities in the world. Cleanest: Tulalip at 1.4. 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.
- 1Port Angeles 4%
- 2Yakima 0%
- 3Toppenish 0%
- 4Parkland 0%
- 5Sunnyside 0%
- 6Spokane Valley 0%
- 7Spokane 0%
- 8Renton 0%
- 9Vancouver 0%
- 10Mead 0%
- 11Tacoma 0%
- 12White Center 0%
- 13Wenatchee 0%
- 14Shelton 0%
- 15Airway Heights 0%
- 16Prosser 0%
- 17Chehalis 0%
- 18Seattle 0%
- 19Tri-Cities 0%
- 20Auburn 0%
- 20Moses Lake 0%
- 22Walla Walla 0%
- 23Ellensburg 0%
- 23Longview 0%
- 23Shoreline 0%
- 26Ephrata 0%
- 27Lynden 0%
- 28Quincy 0%
- 29Ridgefield 0%
- 30Cheney 0%
- 31Lacey 0%
- 32Port Townsend 0%
- 33Finley 0%
- 33Mill Plain 0%
- 35Aberdeen 0%
- 36Bellingham 0%
- 36Mount Vernon 0%
- 38Bremerton 0%
- 38Pullman 0%
- 40Issaquah 0%
- 41Bellevue 0%
- 42Oak Harbor 0%
- 43North Bend 0%
- 44Enumclaw 0%
- 45Anacortes 0%
- 46Tulalip 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 Washington, United States, PM2.5, November 2023, smogrank.com/us/region/washington/history/2023-11 (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.