SmogRank / Countries / Japan / Tochigi
Most polluted cities in Tochigi, Japan
9 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Yaita at 6.0 µg/m³, #1,268 in the world.
9 good
- 1Yaita 6.0
- 2Utsunomiya 5.8
- 3Kaminokawa 5.6
- 4Mooka 5.6
- 5Oyama 5.5
- 6Kanuma 5.4
- 7Sano 5.2
- 8Nasukarasuyama 5.0
- 9Imaichi 4.3
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
Tochigi 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 |
|---|---|
| Nikkō | ≈ 2 µg/m³ |
| Ōtawara | ≈ 5 µg/m³ |
| Kuroiso | ≈ 6 µg/m³ |
| Shimotsuke | ≈ 6 µg/m³ |
| Sakura | ≈ 4 µg/m³ |
| Mibu | ≈ 6 µg/m³ |
| Ujiie | ≈ 4 µg/m³ |
| Hōshakuji | ≈ 4 µg/m³ |
| Tanuma | ≈ 6 µg/m³ |
| Mashiko | ≈ 7 µg/m³ |
| Nasu | ≈ 4 µg/m³ |
| Karasuyama | ≈ 4 µg/m³ |
| Fujioka | ≈ 5 µg/m³ |
| Ogawa | ≈ 5 µg/m³ |
Updated 2026-10-01 20:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.