Mohd Affindi Hj Sabli, a duty forecaster at the Meteorological Department, said yesterday that the transboundary haze was due to major hotspots in Kalimantan, Indonesia’s part of Borneo Island, and brought over by prevailing southwesterly wind towards Brunei.
Hotspots from Sumatra in Indonesia also contributed to the hazy weather conditions, he said, adding that such hazy weather conditions may last up to a week.
However, he said occasional showers will help reduce the haze level. There were no forest fires reported to Fire and Rescue Department recently.
An officer at the Department of Environment, Parks and Recreation (JASTRe) said the severity of the haze condition would depend on the winds.
In a press release, the department said satellite imagery from the Asean Specialised Meteorological Centre (ASMC) detected 388 hotspots scattered mostly in the western and central part of Borneo.
The Pollutant Standards Index (PSI) readings on the JASTRe website at 4pm on Monday read 52 and 47 for Tutong and Belait respectively, while Brunei-Muara recorded 45 and Temburong was 28.
PSI readings below 50 are “good” while readings between 50 and 100 are “moderate”.