Nanjing vs Hanoi

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

China
Nanjing
80
Moderate
Vietnam
Hanoi
120
Unhealthy for Sensitive Groups
MetricNanjingHanoi
AQI80120
PM2.522.1 μg/m³53.9 μg/m³
PM1025.4 μg/m³55.8 μg/m³
Ozone15 ppb35 ppb
NO235.7 ppb45.3 ppb

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