Kolkata vs Hanoi

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

India
Kolkata
116
Unhealthy for Sensitive Groups
Vietnam
Hanoi
99
Moderate
MetricKolkataHanoi
AQI11699
PM2.538.1 μg/m³26.7 μg/m³
PM1045.3 μg/m³28.2 μg/m³
Ozone66 ppb54 ppb
NO213.3 ppb29.3 ppb

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