What is the air quality in Asan?

Asan, South Korea has an annual US AQI of 82 (Polluted) and average PM2.5 of 24.1 µg/m³, ranking #3875 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Asan?

September is typically the cleanest month (AQI 61) and March the most polluted (AQI 96).

Where does Asan's air quality data come from?

PM2.5: 1998–2026 (monitors 2016–2026, satellite 1998–2016; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Asan, South Korea — Air Quality & Clean City Guide 2026

Asan Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3875	Asan, South Korea	Asia	AQI 82	PM2.5 24.1 µg/m³