What is the air quality in Hakodate?

Hakodate, Japan has an annual US AQI of 49 (Reasonable) and average PM2.5 of 9.8 µg/m³, ranking #700 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Hakodate?

December is typically the cleanest month (AQI 42) and April the most polluted (AQI 58).

Where does Hakodate's air quality data come from?

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

Hakodate, Japan — Air Quality & Clean City Guide 2026

Hakodate Air Quality Data

Global rank	City	Continent	AQI	PM2.5
700	Hakodate, Japan	Asia	AQI 49	PM2.5 9.8 µg/m³