Hanoi vs Chennai

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

Vietnam
Hanoi
99
Moderate
India
Chennai
112
Unhealthy for Sensitive Groups
MetricHanoiChennai
AQI99112
PM2.526.7 μg/m³15.5 μg/m³
PM1028.2 μg/m³20.1 μg/m³
Ozone54 ppb64 ppb
NO229.3 ppb11.2 ppb

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