Kolkata vs Nanjing

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

India
Kolkata
116
Unhealthy for Sensitive Groups
China
Nanjing
115
Unhealthy for Sensitive Groups
MetricKolkataNanjing
AQI116115
PM2.538.1 μg/m³55.9 μg/m³
PM1045.3 μg/m³55.9 μg/m³
Ozone66 ppb0 ppb
NO213.3 ppb59.7 ppb

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