Haze update for Sept 8: 24-hour PSI expected to remain in moderate to low unhealthy range

Singapore's 24-hour Pollutant Standard Index (PSI) is expected to remain in the moderate to low unhealthy range, the National Environment Agency (NEA) said in its daily update on Tuesday (Sept 8) evening.

Air quality in Singapore remained in the moderate range for a third consecutive day on Tuesday, continuing an improved trend recorded since 9pm on Saturday.

The 24-hour PSI readings for all regions in the Republic have remained in the moderate range at 6pm.

However, the 1-hour PM2.5 readings are currently elevated in the central and western regions. This has been the case since 3pm and 5pm respectively.

Explaining the situation, NEA said that moderate to dense smoke plumes continue to be observed from the fires in southern and central Sumatra and Kalimantan.

In addition, some smoke haze have also drifted towards Singapore from isolated nearby fires.

These, along with expected dry conditions means there remains a risk of smoke haze, NEA said.

It forecast the 24-hour PSI for Singapore to be in the moderate to low unhealthy range.

Members of the public should note that the health impact of haze is dependent on one's health status, the PSI level, and the length and intensity of outdoor activity.

Those who are planning to conduct or participate in outdoor activities immediately can check the 1-hour PM2.5 concentration readings and vulnerable persons guide.

Meanwhile, those who are planning outdoor activities for the next day should use the 24-hour PSI forecast and the corresponding health advisories for planning.

新加坡国家环境局（NEA）在周二（9月8日）晚间的每日更新中表示，新加坡24小时污染物标准指数（PSI）预计将保持在中低不健康范围内。

新加坡空气质量周二连续第三天保持在中等水平，延续了自周六晚上9点以来的改善趋势。

截至下午 6 点，共和国所有地区的 24 小时 PSI 读数仍处于中等水平。

然而，目前中部和西部地区的1小时PM2.5浓度读数偏高。这种情况分别从下午3点和5点开始出现。

国家环境局解释情况时表示，苏门答腊岛南部和中部以及加里曼丹岛的火灾持续产生中等至浓重的烟雾。

此外，附近零星火灾产生的一些烟雾也飘向了新加坡。

国家环境局表示，这些因素加上预计的干燥天气，意味着仍然存在烟雾风险。

预测显示，新加坡24小时空气污染指数（PSI）将处于中低不健康范围。

公众应注意，雾霾对健康的影响取决于个人的健康状况、PSI 值以及户外活动的持续时间和强度。

计划立即进行或参与户外活动的人员可以查看 1 小时 PM2.5 浓度读数和易感人群指南。

同时，计划第二天进行户外活动的人们应该参考 24 小时 PSI 预报和相应的健康建议进行规划。