The haze in Thailand is different from the one in Singapore. In Northern Thailand it's locally generated in the dry season around March-April (forest fires plu

The haze in Thailand is different from the one in Singapore. In Northern Thailand it's locally generated in the dry season around March-April (forest fires plus farmers burning fields on purpose) and considerably worsened by the topography (no ocean, mountains on three sides). In Singapore it's forest fire smoke from Indonesia blowing in with the winds, and it's usually during the summer (June to October, peaking around August).