Hanoi vs Chennai

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

Vietnam
Hanoi
120
Unhealthy for Sensitive Groups
India
Chennai
68
Moderate
MetricHanoiChennai
AQI12068
PM2.553.9 μg/m³15.7 μg/m³
PM1055.8 μg/m³18.1 μg/m³
Ozone35 ppb23 ppb
NO245.3 ppb21.7 ppb

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