Kolkata vs Nanjing

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

India
Kolkata
116
Unhealthy for Sensitive Groups
China
Nanjing
70
Moderate
MetricKolkataNanjing
AQI11670
PM2.533.9 μg/m³10.6 μg/m³
PM1044 μg/m³11.4 μg/m³
Ozone145 ppb99 ppb
NO23.4 ppb18.2 ppb

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