Kolkata vs Nanjing

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

India
Kolkata
187
Unhealthy
China
Nanjing
155
Unhealthy
MetricKolkataNanjing
AQI187155
PM2.5117.1 μg/m³46.2 μg/m³
PM10121.5 μg/m³53.9 μg/m³
Ozone118 ppb47 ppb
NO217.6 ppb56.3 ppb

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