SmogRank / World / Japan / Chiba / November 2025

Most polluted cities in Chiba, Japan, November 2025

31 cities in Chiba, Japan ranked by their average PM2.5 over the 30 days. Worst: Noda at 13.3 µg/m³, #660 of 2,662 cities in the world. Cleanest: Katsuura at 6.9. 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.

← Noda 0% 0.75%0
Every city in Chiba, Japan ranked for November 2025, 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. 1Noda
    0%
  2. 2Sukayama
    0%
  3. 3Kamagaya
    0%
  4. 4Kashiwa
    0%
  5. 5Yotsukaidō
    0%
  6. 5Yachimata
    0%
  7. 5Sakura
    0%
  8. 8Yachiyo
    0%
  9. 9Inzai
    0%
  10. 10Sōsa
    0%
  11. 11Narita
    0%
  12. 12Ajiki
    0%
  13. 13Baraki
    0%
  14. 14Ichihara
    0%
  15. 15Kimitsu
    0%
  16. 16Kisarazu
    0%
  17. 16Chiba
    0%
  18. 18Narashino
    0%
  19. 19Yokoshiba
    0%
  20. 20Urayasu
    0%
  21. 20Mobara
    0%
  22. 20Kōzaki
    0%
  23. 23Matsudo
    0%
  24. 24Omigawa
    0%
  25. 25Tōgane
    0%
  26. 26Ichinomiya
    0%
  27. 26Sodegaura
    0%
  28. 28Nagadomi
    0%
  29. 29Motona
    0%
  30. 30Tateyama
    0%
  31. 31Katsuura
    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

All cities in the world, November 2025 · All cities in Japan, November 2025 · Chiba now

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SmogRank, most polluted cities in Chiba, Japan, PM2.5, November 2025, smogrank.com/jp/region/chiba/history/2025-11 (accessed 7 Oct 2026).

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