What is the air quality in Isahaya?

Isahaya, Japan has an annual US AQI of 62 (Polluted) and average PM2.5 of 14.7 µg/m³, ranking #2339 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Isahaya?

July is typically the cleanest month (AQI 54) and May the most polluted (AQI 76).

Where does Isahaya's air quality data come from?

PM2.5: 1998–2026 (monitors 2012–2026, satellite 1998–2012; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Isahaya, Japan — Air Quality & Clean City Guide 2026

Isahaya Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2339	Isahaya, Japan	Asia	AQI 62	PM2.5 14.7 µg/m³