SmogRank / Countries / Japan / Gunma
Most polluted cities in Gunma, Japan
8 measured cities ranked by PM2.5, this year. Worst: Tomioka at 9.4 µg/m³, #812 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Tomioka Gunma | 9.4 | |
| 2 | Tatebayashi Gunma | 9.0 | |
| 3 | Shibukawa Gunma | 9.0 | |
| 4 | Kiryū Gunma | 8.8 | |
| 5 | Ōta Gunma | 8.7 | |
| 6 | Sakai-nakajima Gunma | 8.5 | |
| 7 | Nakanojō Gunma | 7.7 | |
| 8 | Numata Gunma | 7.6 |
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
Gunma 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 |
|---|---|
| Maebashi estimated | ≈ 7 µg/m³ |
| Isesaki estimated | ≈ 7 µg/m³ |
| Fujioka estimated | ≈ 7 µg/m³ |
| Annaka estimated | ≈ 3 µg/m³ |
| Midori estimated | ≈ 7 µg/m³ |
| Kamikoizumi estimated | ≈ 6 µg/m³ |
| Kanekomachi estimated | ≈ 3 µg/m³ |
| Tamamura estimated | ≈ 7 µg/m³ |
| Yoshii estimated | ≈ 3 µg/m³ |
| Ōwa estimated | ≈ 8 µg/m³ |
| Ogura estimated | ≈ 3 µg/m³ |
| Ōmamachō-ōmama estimated | ≈ 7 µg/m³ |
| Minakami estimated | ≈ 2 µg/m³ |
Updated 2026-10-01 06:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.