SmogRank / World / Japan / Saitama / December 2024

Most polluted cities in Saitama, Japan, December 2024

29 cities in Saitama, Japan ranked by their average PM2.5 over the 31 days. Worst: Kazo at 9.5 µg/m³, #959 of 2,573 cities in the world. Cleanest: Ogawamachi at 4.7. 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.

← Kazo 0% 0.75%0
Every city in Saitama, Japan ranked for December 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. 1Kazo
    0%
  2. 2Igusa
    0%
  3. 2Gyōda
    0%
  4. 4Sōka
    0%
  5. 4Kasukabe
    0%
  6. 6Kukichūō
    0%
  7. 6Kōnosu
    0%
  8. 6Kawaguchi
    0%
  9. 9Saitama
    0%
  10. 10Koshigaya
    0%
  11. 10Asaka
    0%
  12. 12Niiza
    0%
  13. 13Ageo
    0%
  14. 14Hanyū
    0%
  15. 15Sakado
    0%
  16. 15Iruma
    0%
  17. 17Higashi-Matsuyama
    0%
  18. 18Kumagaya
    0%
  19. 19Tokorozawa
    0%
  20. 19Menuma
    0%
  21. 21Chichibu
    0%
  22. 22Morohongō
    0%
  23. 22Kawagoe
    0%
  24. 24Hannō
    0%
  25. 25Minano
    0%
  26. 26Yorii
    0%
  27. 26Kodamachō-kodamaminami
    0%
  28. 28Honjō
    0%
  29. 29Ogawamachi
    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, December 2024 · All cities in Japan, December 2024 · Saitama now

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SmogRank, most polluted cities in Saitama, Japan, PM2.5, December 2024, smogrank.com/jp/region/saitama/history/2024-12 (accessed 7 Oct 2026).

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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.