SmogRank / World / Japan / Shizuoka / January 2026

Most polluted cities in Shizuoka, Japan, January 2026

19 cities in Shizuoka, Japan ranked by their average PM2.5 over the 31 days. Worst: Kosai at 7.2 µg/m³, #1,732 of 2,593 cities in the world. Cleanest: Shimada at 4.4. 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.

← Kosai 0% 0.75%0
Every city in Shizuoka, Japan ranked for January 2026, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Kosai
    0%
  2. 2Kakegawa
    0%
  3. 3Kanbara
    0%
  4. 3Gotemba
    0%
  5. 3Fukuroi
    0%
  6. 3Susono
    0%
  7. 7Fujinomiya
    0%
  8. 8Numazu
    0%
  9. 8Fuji
    0%
  10. 10Shizuoka
    0%
  11. 11Iwata
    0%
  12. 12Hamamatsu
    0%
  13. 13Shimoda
    0%
  14. 13Kikugawa
    0%
  15. 15Atami
    0%
  16. 16Fujieda
    0%
  17. 16Izunokuni
    0%
  18. 18Hamakita
    0%
  19. 19Shimada
    0%
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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 Shizuoka, Japan, PM2.5, January 2026, smogrank.com/jp/region/shizuoka/history/2026-01 (accessed 6 Oct 2026).

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