What is the air quality in Bangkok?

Bangkok, Thailand has an annual US AQI of 81 (Polluted) and average PM2.5 of 22.7 µg/m³, ranking #3822 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Bangkok?

August is typically the cleanest month (AQI 54) and January the most polluted (AQI 125).

Where does Bangkok's air quality data come from?

PM2.5: 1998–2026 (monitors 2015–2026, satellite 1998–2014; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Bangkok, Thailand — Air Quality & Clean City Guide 2026

Bangkok Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3822	Bangkok, Thailand	Asia	AQI 81	PM2.5 22.7 µg/m³