Kolkata vs Nanjing

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

India
Kolkata
58
Moderate
China
Nanjing
80
Moderate
MetricKolkataNanjing
AQI5880
PM2.517.2 μg/m³22.1 μg/m³
PM1019.4 μg/m³25.4 μg/m³
Ozone75 ppb15 ppb
NO28.5 ppb35.7 ppb

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