What is the air quality in Matsumoto?

Matsumoto, Japan has an annual US AQI of 55 (Reasonable) and average PM2.5 of 11.8 µg/m³, ranking #1338 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Matsumoto?

September is typically the cleanest month (AQI 48) and May the most polluted (AQI 65).

Where does Matsumoto's air quality data come from?

PM2.5: 1998–2026 (monitors 2010–2026, satellite 1998–2010, 2020; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Matsumoto, Japan — Air Quality & Clean City Guide 2026

Matsumoto Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1338	Matsumoto, Japan	Asia	AQI 55	PM2.5 11.8 µg/m³