Hanoi vs Chennai

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

Vietnam
Hanoi
148
Unhealthy for Sensitive Groups
India
Chennai
70
Moderate
MetricHanoiChennai
AQI14870
PM2.560.8 μg/m³20.8 μg/m³
PM1061 μg/m³32.4 μg/m³
Ozone68 ppb68 ppb
NO230.3 ppb14.6 ppb

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