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Don t take toxic air problem lightly 13 Editorial Bangkok Post editorial column published : 14 Mar 2021 at 04:00 13 If April is the month of Songkran, surely March is known for its pollution, especially in Northern Thailand, at its peak. With burning season in full swing, air quality readings in cities like Chiang Mai, Chiang Rai, and Pai have become rather unsettling yet not surprising. Over the past two weeks, Chiang Mai s average daily PM2.5 level has hit 172.6 µg/m³, according to aciqn.org. But if that wasn t bad enough, in the rugged hills of Mae Hong Son province, towns like Pai have seen readings as high as 400 µg/m³. These numbers are 3–16 times more than the recommended safe limits depending on who you believe; the World Health Organization recommends 25µg/m³ while the Pollution Control Department says 50 µg/m³ is more accurate. Regardless, one thing is certain 6.2 million people in the North have had to tolerate months of hazardous c

United statesChiang maiChiang raiMae hong sonKhon kaenSuwanchai wattanayingcharoenchaiCharoen pokphandMitr pholDepartment of healthWorld health organizationForest fire control divisionDepartment of national parkPollution control departmentNorthern thailandNational parkPlant conservation