SmogRank / Countries / Japan / Saitama

Most polluted cities in Saitama, Japan

30 measured cities, this year; 30 above the WHO annual guideline. Worst: Gyōda at 9.6 µg/m³, #759 in the world.

28 good  2 moderate

  1. 1Gyōda 9.61.9×
  2. 2Asaka 9.41.9×
  3. 3Menuma 9.01.8×
  4. 4Niiza 9.01.8×
  5. 5Sakado 8.91.8×
  6. 6Kukichūō 8.91.8×
  7. 7Igusa 8.91.8×
  8. 8Ageo 8.91.8×
  9. 9Misato, Saitama 8.91.8×
  10. 10Sōka 8.81.8×
  11. 11Hanyū 8.81.8×
  12. 12Yorii 8.71.7×
  13. 13Morohongō 8.71.7×
  14. 14Kodamachō-kodamaminami 8.71.7×
  15. 15Kazo 8.71.7×
  16. 16Kawaguchi 8.71.7×
  17. 17Higashi-Matsuyama 8.71.7×
  18. 18Koshigaya 8.61.7×
  19. 19Kōnosu 8.61.7×
  20. 20Iruma 8.61.7×
  21. 21Hannō 8.41.7×
  22. 22Saitama 8.41.7×
  23. 23Kumagaya 8.31.7×
  24. 24Honjō 8.31.7×
  25. 25Kasukabe 8.21.6×
  26. 26Tokorozawa 8.11.6×
  27. 27Kawagoe 8.11.6×
  28. 28Chichibu 8.11.6×
  29. 29Sayama 8.01.6×
  30. 30Ogawamachi 6.91.4×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Estimated: cities without a monitor

Saitama cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Shimotoda≈ 8 µg/m³Good
Fujimino≈ 8 µg/m³Good
Iwatsuki≈ 8 µg/m³Good
Yono≈ 8 µg/m³Good
Yashio≈ 5 µg/m³Good
Wako≈ 10 µg/m³Moderate
Shiki≈ 8 µg/m³Good
Warabi≈ 8 µg/m³Good
Okegawa≈ 8 µg/m³Good
Yoshikawa≈ 5 µg/m³Good
Tsurugashima≈ 8 µg/m³Good
Kitamoto≈ 8 µg/m³Good
Hasuda≈ 8 µg/m³Good
Hidaka≈ 6 µg/m³Good
Satte≈ 8 µg/m³Good
Hatogaya-honchō≈ 8 µg/m³Good
Kamifukuoka≈ 8 µg/m³Good
Shiraoka≈ 8 µg/m³Good
Ōi≈ 8 µg/m³Good
Shinden≈ 8 µg/m³Good
Sugito≈ 8 µg/m³Good
Miyoshidai≈ 8 µg/m³Good
Washinomiya≈ 8 µg/m³Good
Ishigami≈ 6 µg/m³Good
Matsubushi≈ 5 µg/m³Good
Fukiage-fujimi≈ 8 µg/m³Good
Kurihashi≈ 8 µg/m³Good
Shōbu≈ 8 µg/m³Good
Kisai≈ 8 µg/m³Good
Yamata≈ 6 µg/m³Good
Ōgushi≈ 8 µg/m³Good
Ranzan≈ 6 µg/m³Good
Sashiōgi≈ 8 µg/m³Good

Updated 2026-10-01 20:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.