BANGKOK, March 27 (Xinhua) — Air pollution continued to plague Thailand’s northern provinces, with air pollution in some regions reaching unhealthy levels, government reports showed on Monday.
The Pollution Control Department (PCD) reported that air quality in most of the country’s 17 northern provinces reached unsafe levels, with PM 2.5 soaring to 561 micrograms per cubic meter in some areas in Chiang Rai prov