Smog rings alarm bells in Chiang Mai
The North continued to choke in smog, as air pollution level soared in an increasing number of hotspots after the end of the ban on burning.
The level of particulate matter smaller than 2.5 microns (PM2.5) in many provinces of the northern region, especially in Chiang Mai, continued to rise yesterday (April, 23) to 100 microrams per cubic metre of air by 6am, as measured by the Pollution Control Department (PCD).
Pratch Rujivanarom
