What is the air quality in Nagareyama?

Nagareyama, Japan has an annual US AQI of 59 (Reasonable) and average PM2.5 of 13.3 µg/m³, ranking #1888 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Nagareyama?

September is typically the cleanest month (AQI 54) and May the most polluted (AQI 63).

Where does Nagareyama's air quality data come from?

PM2.5: 1998–2026 (monitors 2014–2026, satellite 1998–2014, 2019; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Nagareyama, Japan — Air Quality & Clean City Guide 2026

Nagareyama Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1888	Nagareyama, Japan	Asia	AQI 59	PM2.5 13.3 µg/m³