SmogRank / World / United States / Washington / June 2023
Most polluted cities in Washington, United States, June 2023
45 cities in Washington, United States ranked by their average PM2.5 over the 30 days. Worst: Toppenish at 6.8 µg/m³, #1,194 of 1,549 cities in the world. Cleanest: Tulalip at 1.2. 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.
- 1Toppenish 0%
- 2White Center 0%
- 3Spokane Valley 0%
- 4Spokane 0%
- 5Ephrata 0%
- 5Moses Lake 0%
- 5Sunnyside 0%
- 5Wenatchee 0%
- 9Renton 0%
- 10Seattle 0%
- 11Pullman 0%
- 12Prosser 0%
- 13Tacoma 0%
- 14Auburn 0%
- 15Airway Heights 0%
- 15Ellensburg 0%
- 17Yakima 0%
- 18Port Angeles 0%
- 18Vancouver 0%
- 18Walla Walla 0%
- 21Shoreline 0%
- 22Parkland 0%
- 22Quincy 0%
- 24Bellingham 0%
- 24Bremerton 0%
- 24Ridgefield 0%
- 27Mead 0%
- 27Port Townsend 0%
- 29Mount Vernon 0%
- 30Tri-Cities 0%
- 31Chehalis 0%
- 32North Bend 0%
- 33Aberdeen 0%
- 33Shelton 0%
- 35Bellevue 0%
- 35Cheney 0%
- 37Mill Plain 0%
- 38Enumclaw 0%
- 38Lacey 0%
- 40Finley 0%
- 41Longview 0%
- 41Lynden 0%
- 43Anacortes 0%
- 44Oak Harbor 0%
- 45Tulalip 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
All cities in the world, June 2023 · All cities in United States, June 2023 · Washington now
Use this board
SmogRank, most polluted cities in Washington, United States, PM2.5, June 2023, smogrank.com/us/region/washington/history/2023-06 (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.