CityNews – 9th January 2020, the air in Chiang Mai was found to be polluted with particulate matter (PM) levels becoming higher, affecting people’s health. At the weather station in Chang Phueak area, PM 2.5 levels were at 58 micrograms per cubic meter while at Sri Phum, it was around 59. Public relations spokesperson of the centre for controlling wildfire and smoke in the northern region