Seoul vs Hanoi

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

South Korea
Seoul
99
Moderate
Vietnam
Hanoi
153
Unhealthy
MetricSeoulHanoi
AQI99153
PM2.530.6 μg/m³83.4 μg/m³
PM1033.3 μg/m³83.8 μg/m³
Ozone65 ppb59 ppb
NO247.8 ppb49.3 ppb

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