SmogRank / Countries / Japan / Okayama
Most polluted cities in Okayama, Japan
10 measured cities ranked by PM2.5, last 30 days. Worst: Bizen at 8.0 µg/m³, #620 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Bizen Okayama | 8.0 | |
| 2 | Tamano Okayama | 7.6 | |
| 3 | Takahashi Okayama | 7.2 | |
| 4 | Kurashiki Okayama | 6.6 | |
| 5 | Kasaoka Okayama | 6.4 | |
| 6 | Sōja Okayama | 6.2 | |
| 7 | Asakuchi Okayama | 6.1 | |
| 8 | Okayama Okayama | 6.0 | |
| 9 | Tsuyama Okayama | 5.9 | |
| 10 | Niimi Okayama | 5.3 |
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data
Estimated: cities without a monitor
Okayama 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 |
|---|---|
| Akaiwa estimated | ≈ 8 µg/m³ |
| Maniwa estimated | ≈ 6 µg/m³ |
| Ibara estimated | ≈ 8 µg/m³ |
| Setouchi estimated | ≈ 8 µg/m³ |
| Hayashino estimated | ≈ 8 µg/m³ |
| Kamogatachō-kamogata estimated | ≈ 9 µg/m³ |
Updated 2026-10-01 10:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.