What is the air quality in Longnan (Gansu)?

Longnan (Gansu), China has an annual US AQI of 84 (Polluted) and average PM2.5 of 25.7 µg/m³, ranking #3961 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Longnan (Gansu)?

September is typically the cleanest month (AQI 61) and January the most polluted (AQI 129).

Where does Longnan (Gansu)'s air quality data come from?

PM2.5: 1998–2026 (monitors 2015, 2017–2026, satellite 1998–2017). Measured by government monitoring stations. Full sources are on the methodology page.

Longnan (Gansu), China — Air Quality & Clean City Guide 2026

Longnan (Gansu) Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3961	Longnan (Gansu), China	Asia	AQI 84	PM2.5 25.7 µg/m³