SmogRank / Countries / Japan / Niigata

Most polluted cities in Niigata, Japan

11 measured cities ranked by PM2.5, last 30 days. Worst: Itoigawa at 8.4 µg/m³, #561 in the world.

#City µg/m³
1Itoigawa Niigata
8.4
2Shibata Niigata
6.7
3Jōetsu Niigata
6.2
4Nagaoka Niigata
5.5
5Sado Niigata
5.5
6Shirone Niigata
5.3
7Minamiuonuma Niigata
5.3
8Niigata Niigata
4.9
9Kameda-honchō Niigata
4.9
10Maki Niigata
4.8
11Niitsu-honchō Niigata
4.5
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

Niigata 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
Sanjō estimated≈ 6 µg/m³Good
Kashiwazaki estimated≈ 6 µg/m³Good
Tsubame estimated≈ 6 µg/m³Good
Murakami estimated≈ 5 µg/m³Good
Tōkamachi estimated≈ 5 µg/m³Good
Gosen estimated≈ 6 µg/m³Good
Mitsuke estimated≈ 6 µg/m³Good
Agano estimated≈ 6 µg/m³Good
Ojiya estimated≈ 5 µg/m³Good
Uonuma estimated≈ 4 µg/m³Good
Myoko estimated≈ 6 µg/m³Good
Muikamachi estimated≈ 5 µg/m³Good
Tainai estimated≈ 5 µg/m³Good
Arai estimated≈ 6 µg/m³Good
Kamo estimated≈ 6 µg/m³Good
Yoshida-kasugachō estimated≈ 6 µg/m³Good
Tochio-honchō estimated≈ 6 µg/m³Good
Suibara estimated≈ 6 µg/m³Good
Shiozawa estimated≈ 5 µg/m³Good
Muramatsu estimated≈ 6 µg/m³Good
Ryōtsu-minato estimated≈ 6 µg/m³Good

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