What is the air quality in Tehran?

Tehran, Iran has an annual US AQI of 93 (Polluted) and average PM2.5 of 31.6 µg/m³, ranking #4391 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Tehran?

January is typically the cleanest month (AQI 88) and April the most polluted (AQI 99).

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Global rank	City	Continent	AQI	PM2.5
4391	Tehran, Iran	Africa & Middle East	AQI 93	PM2.5 31.6 µg/m³