Nanjing vs Hanoi

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

China
Nanjing
56
Moderate
Vietnam
Hanoi
147
Unhealthy for Sensitive Groups
MetricNanjingHanoi
AQI56147
PM2.54.7 μg/m³62.9 μg/m³
PM105.7 μg/m³63.3 μg/m³
Ozone40 ppb71 ppb
NO221.5 ppb29 ppb

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