Where the smoke is coming from
The haze is coming mainly from forest fires and farm-clearing fires raging across the North as well as in neighbouring countries.
Satellite images show 1,151 fire hotspots in the North, mostly in forests.Most are in Mae Hong Son, with 407, while Chiang Mai has 193, Chiang Rai 137, Lampang 109 and Nan 106.Myanmar has 12,422 and Laos 2,938.
The Nation Reporter