Seoul vs Hanoi

Live air quality comparison. Seoul has cleaner air right now.

South Korea
Seoul
51
Moderate
Vietnam
Hanoi
99
Moderate
MetricSeoulHanoi
AQI5199
PM2.516.5 μg/m³26.7 μg/m³
PM1016.6 μg/m³28.2 μg/m³
Ozone6 ppb54 ppb
NO255.4 ppb29.3 ppb

Lower values mean cleaner air. Updated hourly. Sources: OpenAQ, Open-Meteo.