Kolkata vs Tehran

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

India
Kolkata
58
Moderate
Iran
Tehran
73
Moderate
MetricKolkataTehran
AQI5873
PM2.517.2 μg/m³30.5 μg/m³
PM1019.4 μg/m³31 μg/m³
Ozone75 ppb0 ppb
NO28.5 ppb102.4 ppb

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