What is the air quality in Yamaguchi?

Yamaguchi, Japan has an annual US AQI of 60 (Reasonable) and average PM2.5 of 13.3 µg/m³, ranking #2037 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Yamaguchi?

September is typically the cleanest month (AQI 53) and May the most polluted (AQI 74).

Where does Yamaguchi's air quality data come from?

PM2.5: 1998–2026 (monitors 2011–2026, satellite 1998–2011; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Yamaguchi, Japan — Air Quality & Clean City Guide 2026

Yamaguchi Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2037	Yamaguchi, Japan	Asia	AQI 60	PM2.5 13.3 µg/m³