SmogRank / Countries / Japan / Saitama
Most polluted cities in Saitama, Japan
12 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Niiza at 7.8 µg/m³, #653 in the world.
12 good
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.
| City | 7-day estimate |
|---|---|
| Shimotoda | ≈ 8 µg/m³ |
| Fujimino | ≈ 8 µg/m³ |
| Iwatsuki | ≈ 8 µg/m³ |
| Yono | ≈ 8 µg/m³ |
| Yashio | ≈ 5 µg/m³ |
| Wako | ≈ 10 µg/m³ |
| Shiki | ≈ 8 µg/m³ |
| Warabi | ≈ 8 µg/m³ |
| Okegawa | ≈ 8 µg/m³ |
| Yoshikawa | ≈ 5 µg/m³ |
| Tsurugashima | ≈ 8 µg/m³ |
| Kitamoto | ≈ 8 µg/m³ |
| Hasuda | ≈ 8 µg/m³ |
| Hidaka | ≈ 6 µg/m³ |
| Satte | ≈ 8 µg/m³ |
| Hatogaya-honchō | ≈ 8 µg/m³ |
| Kamifukuoka | ≈ 8 µg/m³ |
| Shiraoka | ≈ 8 µg/m³ |
| Ōi | ≈ 8 µg/m³ |
| Shinden | ≈ 8 µg/m³ |
| Sugito | ≈ 8 µg/m³ |
| Miyoshidai | ≈ 8 µg/m³ |
| Washinomiya | ≈ 8 µg/m³ |
| Ishigami | ≈ 6 µg/m³ |
| Matsubushi | ≈ 5 µg/m³ |
| Fukiage-fujimi | ≈ 8 µg/m³ |
| Kurihashi | ≈ 8 µg/m³ |
| Shōbu | ≈ 8 µg/m³ |
| Kisai | ≈ 8 µg/m³ |
| Yamata | ≈ 6 µg/m³ |
| Ōgushi | ≈ 8 µg/m³ |
| Ranzan | ≈ 6 µg/m³ |
| Sashiōgi | ≈ 8 µg/m³ |
Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.