Kolkata vs Tehran

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

India
Kolkata
116
Unhealthy for Sensitive Groups
Iran
Tehran
93
Moderate
MetricKolkataTehran
AQI11693
PM2.538.1 μg/m³38.6 μg/m³
PM1045.3 μg/m³39.7 μg/m³
Ozone66 ppb8 ppb
NO213.3 ppb111.6 ppb

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