Tehran vs Hanoi

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

Iran
Tehran
93
Moderate
Vietnam
Hanoi
99
Moderate
MetricTehranHanoi
AQI9399
PM2.538.6 μg/m³26.7 μg/m³
PM1039.7 μg/m³28.2 μg/m³
Ozone8 ppb54 ppb
NO2111.6 ppb29.3 ppb

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