Air quality across the Sultanate fluctuated between good and moderate levels yesterday, with most districts recording moderate readings by afternoon.
At 7am, Belait recorded moderate air quality with a Pollutant Standards Index (PSI) reading of 53, while the other districts remained within the good range. By 9am, all four districts recorded good air quality. However, at 11am, Brunei-Muara and Tutong returned to the moderate range, recording PSI readings of 53 and 52, while Belait and Temburong maintained good air quality.
At 2pm, air quality shifted again, with Brunei-Muara, Belait and Tutong recording moderate readings, while Temburong remained within the good range. By 4pm, Brunei-Muara and Tutong recorded the highest PSI readings at 63, followed by Temburong at 55 and Belait at 52.
The Department of Environment, Parks and Recreation (JASTRe), Ministry of Development, has enhanced air quality reporting in Brunei Darussalam by incorporating PM2.5 concentrations into the PSI reporting, effective on September 1, 2026.
According to JASTRe, PM2.5 refers to fine suspended particulate matter with a diameter of less than 2.5 micrometres, as defined by the World Health Organization.
These fine particles can penetrate deep into the lungs and enter the bloodstream, potentially causing adverse effects on the cardiovascular and respiratory systems.
During the hazy period, JASTRe will continue to closely monitor air quality nationwide and provide PSI updates five times daily, at 7am, 9am, 11am, 2pm and 4pm.
The Ministry of Health (MoH) advised the public that outdoor activities may continue as usual when PSI readings are within the moderate range of 51 to 100.
However, children, pregnant women and the elderly are advised to reduce strenuous or prolonged outdoor physical activities, while individuals with heart or lung conditions should limit such activities.
Those experiencing persistent or worsening symptoms, including coughing, shortness of breath, chest discomfort or breathing difficulties, are advised to seek immediate medical attention at nearby clinics or health centres.
The public is also encouraged to refer to health advisories issued by the MoH from time to time for further guidance.
In view of the dry period, the public is reminded not to conduct open burning or engage in other activities that could worsen haze conditions.
Anyone who encounters bush or forest fires should immediately contact the Fire and Rescue Department through its emergency line at 995.
The public can also call the Darussalam Hotline 123 to lodge complaints regarding open burning or to seek health information and advice.
SOURCE/AUTHOR : BORNEO BULLETIN/Lyna Mohamad
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