What is the air quality in Suwon?

Suwon, South Korea has an annual US AQI of 77 (Polluted) and average PM2.5 of 22 µg/m³, ranking #3629 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Suwon?

September is typically the cleanest month (AQI 58) and March the most polluted (AQI 90).

Where does Suwon's air quality data come from?

PM2.5: 1998–2026 (monitors 2015–2026, satellite 1998–2014; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

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

Suwon Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3629	Suwon, South Korea	Asia	AQI 77	PM2.5 22 µg/m³