What is the air quality in Kathmandu?

Kathmandu, Nepal has an annual US AQI of 105 (Polluted) and average PM2.5 of 38.1 µg/m³, ranking #4802 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Kathmandu?

August is typically the cleanest month (AQI 53) and January the most polluted (AQI 155).

Where does Kathmandu's air quality data come from?

PM2.5: 1998–2026 (monitors 2019–2026, low-cost sensors 2026, satellite 1998–2019; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Kathmandu, Nepal — Air Quality & Clean City Guide 2026

Kathmandu Air Quality Data

Global rank	City	Continent	AQI	PM2.5
4802	Kathmandu, Nepal	Asia	AQI 105	PM2.5 38.1 µg/m³