The Pollution Control Department (PCD) said it will follow World Health Organization guidelines and reclassify the safe level for ultra-fine particulate matter (PM2.5) from 50 microgrammes per cubic metre (µg/m3) to 37.5 µg/m3 in a bid to curb dust pollution.
Jatuporn Burutphat, permanent secretary for the Ministry of Natural Resources and Environment, said the ministry supports lowering the threshold on Thailand’s Air Quality…
