Health
#Savemaesai – PM2.5 soars over 700, Chiang Mai and Mae Hong Son also affected
THE AIR quality index measured by the Public Health Office in Mae Sai district of Chiang Rai province at 5 a.m. this morning (Mar. 27) showed that the concentration of ultrafine dust particles smaller than 2.5 micrometres, known as PM2.5, was 738 micrograms per cubic metre, Sanook.com said. This reading, published on AQICN.org, is […]
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