“Visibility has been dropping fast,” Lampang weather bureau’s chief Tiwan Phanmaisee said.
He believed the amount of small dust particles, those sized no more than PM10, might have soared past the safe limit of 120 micrograms per cubic metre of air.
In the nearby province of Lamphun, airquality monitoring devices showed readings of 122.29 micrograms per cubic metre of air.
“The situation is worrying,” Lamphun Governor Surachai Khanarsa said.
He said the smoke problem would harm not just people’s health but the province’s tourism and appeal as an investment destination.
Surachai instructed authorities to strictly enforce measures to prevent forest fires.
Meanwhile Agriculture Minister Theera Wongsamut said the premier set up a committee chaired by Deputy PM’s Yongyuth Wichaidit chairs this committee to address the smoke problem from forest fires and fires ignited to burn agricultural waste or clear farmland.