The Lampang provincial meteorological office has reported that the amount of small particles has been increasing. Many northern provinces are covered with white fog, which reduces visibility.
Phrae and Lampang are the two most troubled provinces, with the levels of dust particles standing at 112 and 106 micrograms per cubic meter, respectively. The dust amount considered dangerous is at 120 micrograms. Chiang Mai and Chiang Rai now have around 70 and 50 micrograms of dust particles per cubic meter.
Haze is an annual problem, severely affecting local businesses in the North from February to March.
