Harmful levels of ultrafine dust in 31 provinces

About 40% of the country was blanketed with thick and harmful levels of ultrafine dust on Sunday afternoon, according to Geo-Informatics and Space Technology Development Agency (Gistda).

The public organisation reported via its website pm25.gistda.or.th that 31 out of 77 provinces in the country, mostly in the Central Plain, were shrouded with unsafe levels of…