SmogRank / World / Japan / Chiba / September 2024

Most polluted cities in Chiba, Japan, September 2024

31 cities in Chiba, Japan ranked by their average PM2.5 over the 30 days. Worst: Sukayama at 9.0 µg/m³, #564 of 1,964 cities in the world. Cleanest: Nagadomi at 5.0. 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.

← Sukayama 0% 0.75%0
Every city in Chiba, Japan ranked for September 2024, 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. 1Sukayama
    0%
  2. 2Noda
    0%
  3. 2Chiba
    0%
  4. 4Yachiyo
    0%
  5. 4Kamagaya
    0%
  6. 6Urayasu
    0%
  7. 7Baraki
    0%
  8. 8Kashiwa
    0%
  9. 8Narita
    0%
  10. 8Narashino
    0%
  11. 11Sakura
    0%
  12. 12Kimitsu
    0%
  13. 12Yotsukaidō
    0%
  14. 12Inzai
    0%
  15. 15Kisarazu
    0%
  16. 15Kōzaki
    0%
  17. 15Sōsa
    0%
  18. 18Matsudo
    0%
  19. 18Omigawa
    0%
  20. 20Ichihara
    0%
  21. 20Ajiki
    0%
  22. 22Mobara
    0%
  23. 23Choshi
    0%
  24. 24Tateyama
    0%
  25. 24Yachimata
    0%
  26. 24Motona
    0%
  27. 27Sodegaura
    0%
  28. 28Tōgane
    0%
  29. 28Ichinomiya
    0%
  30. 30Katsuura
    0%
  31. 31Nagadomi
    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, September 2024 · All cities in Japan, September 2024 · Chiba now

Use this board

SmogRank, most polluted cities in Chiba, Japan, PM2.5, September 2024, smogrank.com/jp/region/chiba/history/2024-09 (accessed 7 Oct 2026).

Download top 10 (PNG)

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.