Chiang Mai's air quality is fifth worst globally with PM2.5 levels exceeding safe limits. Hod district hit highest at 144 microgrammes/m³.
Pornphrom Vikitsreth, Adviser to the Governor of Bangkok, and Chief Sustainability Officer of the Bangkok Metropolitan ...
The five districts that reported the highest levels of PM2.5 were: Nong Chok (61.1 µg/m³), Lat Krabang (59.4 µg/m³), Khlong ...
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