Kolkata vs Hanoi

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

India
Kolkata
58
Moderate
Vietnam
Hanoi
120
Unhealthy for Sensitive Groups
MetricKolkataHanoi
AQI58120
PM2.517.2 μg/m³53.9 μg/m³
PM1019.4 μg/m³55.8 μg/m³
Ozone75 ppb35 ppb
NO28.5 ppb45.3 ppb

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