Unsafe levels of smog in Bangkok and 24 provincesListen to this articleUnsafe levels of ultrafine dust blanketed Bangkok and 24 provinces, mostly in the Central Plains and the North, on Monday morning, according to the Geo-Informatics and Space Technology Development Agency (Gistda). Gistda reported at 7am that unsafe levels of particulate matter 2.5 micrometres and less in diameter (PM2.5) ranged from 37.7 to 58.6 microgrammes per cubic metre (µg/m³) of air in Bangkok and 24 provinces. Very good air quality was detected in five provinces where PM2.5 levels were between 11.6 and 14.5µg/m³. In ascending order, they were Mae Hong Son, Phuket, Krabi, Surat Thani and Phangna. Other provinces had either good or moderate air quality.

Source: Bangkok Post December 29, 2025 04:41 UTC