Several areas in Bangkok and nearby provinces were blanketed with hazardous levels of smog on Tuesday.
The Pollution Control Department reported that levels of PM2.5 exceeded the safe threshold of 35 microgrammes per cubic metre of air in 24 hours in parts of the capital and in Nakhon Pathom, Nonthaburi, Samut Prakan and Samut Sakhon as of 11am on Tuesday.
In Bangkok, unsafe levels of PM2.5 ranged from 37 to 48.8µg/m³ in several districts.
The 48.8µg/m³ peak was in Sathon district.
The nationwide peak was outside the Bangkok area, 58.8µg/m³ in Kanchanaburi, and the lowest was 3.2µg/m³ in Phangnga.
The Meteorological Department said the smog was expected to remain over Greater Bangkok until Oct 16.
