Unsafe levels of smog in 38 provincesListen to this articleThe map from Gistda shows levels of PM2.5 in Thailand in different colour codes on Sunday morning. Unsafe levels of ultrafine dust blanketed 38 provinces, mostly in the Northeast and the Central Plains, on Sunday morning, according to the Geo-Informatics and Space Technology Development Agency (Gistda). Moderate air quality was detected in Bangkok and 18 provinces with PM2.5 levels ranging from 27 to 37.2µg/m³. People in 18 provinces, mostly in the North and the South, had good air quality with PM2.5 levels from 16.5 to 24.9µg/m³. Two northern provinces of Mae Hong Son and Chiang Mai had very good air quality with PM2.5 levels of 10.6 and 12.8µg/m³ respectively.

Source: Bangkok Post January 18, 2026 04:02 UTC