What is the air quality in Nishio?

Nishio, Japan has an annual US AQI of 57 (Reasonable) and average PM2.5 of 12.8 µg/m³, ranking #1664 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Nishio?

September is typically the cleanest month (AQI 53) and May the most polluted (AQI 67).

Where does Nishio's air quality data come from?

PM2.5: 1998–2025 (monitors 2014–2025, satellite 1998–2013; 2025 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Nishio, Japan — Air Quality & Clean City Guide 2026

Nishio Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1664	Nishio, Japan	Asia	AQI 57	PM2.5 12.8 µg/m³