CHIANG MAI, Feb 9 (TNA) – Smog from forest fires has once again blanketed the city of Chiang Mai and PM 2.5 levels exceed the standard at 3 areas. Visibility has decreased as the haze is likely drifting from different districts where there are efforts to manage fires in agricultural areas and winds blowing into the city. PM 2.5 levels exceeded the standard at 3 points: Sri Phum Sub…


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Author: Pantipa Wacharath