Kolkata vs Hanoi

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

India
Kolkata
187
Unhealthy
Vietnam
Hanoi
153
Unhealthy
MetricKolkataHanoi
AQI187153
PM2.5117.1 μg/m³83.4 μg/m³
PM10121.5 μg/m³83.8 μg/m³
Ozone118 ppb59 ppb
NO217.6 ppb49.3 ppb

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