Northern Thailand Hit with Dangerous Levels of PM2.5 Dust Particles

Northern Thailand, especially Chiang Mai and Chiang Rai, are suffering from extremely poor air quality conditions. Both northern provinces were found to have PM2.5 dust particle levels which exceed the 50-micron safety standard, with Wiang Pang Kham sub-district in Chiang Rai recording 247 microns.The Pollution ...

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