The air in 41 of the 76 provinces in Thailand was deemed safe to breathe on Tuesday morning while hazardous levels of ultrafine dust remained in parts of the North, Central Plain and the East ...

Unsafe levels of ultrafine dust blanketed 48 out of the 76 Thai provinces, and Bangkok, on Tuesday, with red levels in parts of the Central Plain and the East, the Geo-Informatics and Space ...