Toxic dust levels above the safe limit of 50 microgrammes per cubic metres (ug/m3) remained in the North, the Northeast, Bangkok and its surrounding provinces on Thursday.
Pinsak Surasawadi, director-general of the Pollution Control Department (PCD) in his capacity as chairman of the Centre for Air Pollution Mitigation, said the levels of particle matter 2.5 micrometres or less in diameter (PM2.5) levels have increased in all areas in 17 northern provinces on Thursday morning.
In northern Thailand, a total of 17 areas were classified in the orange zone, reflecting levels starting to affect…
