The country’s haze situation continued to show improvement on Tuesday, with air quality remaining largely good from the morning through late afternoon, following two consecutive days of favourable air quality conditions.
Throughout Tuesday, air quality remained in the good range nationwide, except for the Brunei-Muara district, which briefly recorded moderate air quality at 9am with a Pollutant Standards Index (PSI) reading of 51.
By 4pm, air quality across the country returned to the good range, with PSI readings of 50 in Brunei-Muara, 42 in Belait, 13 in Temburong and 18 in Tutong.
The Department of Environment, Parks and Recreation (JASTRe), Ministry of Development, stepped up monitoring during the hazy period with air quality reporting in Brunei Darussalam over the past weeks enhanced with the inclusion of PM2.5 concentrations in the PSI, which took effect on September 1, 2026.
PM2.5 refers to fine suspended particulate matter measuring less than 2.5 micrometres in diameter, as defined by the World Health Organization where these fine particles can penetrate deep into the lungs and enter the bloodstream, potentially causing adverse effects on the cardiovascular and respiratory systems.
JASTRe said it will continue to monitor air quality nationwide and issue PSI updates five times daily during the hazy period, at 7am, 9am, 11am, 2pm and 4pm.
PSI readings below 50 is good, between 51-100 moderate, between 101-200 unhealthy, between 201-300 very unhealthy, while above 300 is hazardous.
The Ministry of Health advised the public to take precautions when PSI readings reach the unhealthy level, and to reduce strenuous or prolonged outdoor activities and minimise unnecessary exposure to haze.
Children, older persons and pregnant women are advised to restrict strenuous or prolonged outdoor activities, while individuals with existing heart or respiratory conditions are advised to avoid such activities.
Those experiencing persistent or worsening symptoms, including coughing, wheezing, shortness of breath, chest discomfort or difficulty breathing, are advised to seek medical attention at the nearest health centre or health facility.
SOURCE/AUTHOR : BORNEO BULLETIN/LYNA MOHAMAD
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