Chiang Mai – the sixth worst air pollution in the world

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Chiang Mai – the sixth worst air pollution in the world

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Air pollution in the North continues to be critical, with small dust particles of 2.5 microns in size (PM2.5) exceeding safe limits at almost every air-quality testing station. The Pollution Control Department (PCD) revealed on Sunday that although PM2.5 levels had dropped from the previous day at almost every station, the amounts were still higher than safe standards. On average, the amount of PM2.5 in the North ranged between 48 and 91 micrograms per cubic metre of air during the 24-hour period.

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Chiang Mai – the sixth worst air pollution in the world

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