The northern tourist city, Thailand’s second city, was ranked the number 1 air-polluted city with a 209 air quality index score on airvisual.com, before the air then worsened to an AQI of 234 around noon.
Meanwhile the Pollution Control Department (PCD) reported the average 24-hour level of PM2.5 dust particulates had reached dangerous heights in all nine northern provinces of the Kingdom.
Full story: The Nation
By The Nation
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