Air quality in Mae Sai

Smog levels start to climb in Chiang Mai, Chiang Rai

Date of Release: 
Mar 17 2016

THE AMOUNT of small particulate matter of up to 10 microns in diameter (PM10) in Chiang Mai and Chiang Rai provinces has gone beyond safety levels for two consecutive days, while the readings in other provinces in the North remained within the safe level of 120 micrograms per cubic metre.

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