Kolkata vs Hangzhou

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

India
Kolkata
121
Unhealthy for Sensitive Groups
China
Hangzhou
48
Good
MetricKolkataHangzhou
AQI12148
PM2.551.9 μg/m³3.3 μg/m³
PM1064.5 μg/m³4 μg/m³
Ozone72 ppb83 ppb
NO215.5 ppb8.2 ppb

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