Yo
Best answer
10
Feb–April worst, mid-March peak. AQI 150+ common — N95 daily, air purifier in room. Many nomads leave to islands. Nov–Feb golden. If March fixed, check IQAir weekly and have escape budget.
7
Locals burn fields — not just city. Doi Suthep views disappear in haze. Outdoor cafes miserable afternoons.
3
Stayed March once — left after 10 days south. Never again.