Air quality improves as 24-hour PSI in central Singapore returns to moderate range

Singapore residents can breathe better again.

After recording nearly a day of unhealthy air quality , the 24-hour Pollutant Standard Index (PSI) in the central region slipped back into the moderate range at about 10pm on Thursday (Sept 10) night, and has continued into Friday morning.

As at 10am on Friday, 24-hour PSI readings across all five regions in Singapore are in the moderate range.

Meanwhile, 1-hour PM2.5 readings for all five regions are also within the normal range.

In its daily haze update on Thursday evening , the National Environment Agency (NEA) said the 24-hour PSI for Singapore is forecast to remain in the high moderate to low unhealthy range.

This is as moderate to dense smoke plumes continue to be detected from fires in southern Sumatra and Kalimantan.

It added that smoke plumes from southern Sumatra were also observed to be drifting towards Singapore.

Dry conditions are expected to persist over Kalimantan and southern Sumatra, and coupled with the prevailing southerly, south-easterly winds, NEA expects the risk of transboundary smoke haze affecting Singapore to remain should the fires persist.

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.

新加坡居民终于可以再次呼吸到更顺畅的空气了。

在经历了近一天的不健康空气质量后，中部地区的 24 小时污染物标准指数 (PSI) 于周四（9 月 10 日）晚上 10 点左右回落至中等范围，并一直持续到周五早上。

截至周五上午 10 点，新加坡五个地区的 24 小时 PSI 读数均处于中等范围。

与此同时，五个地区的 1 小时 PM2.5 读数也均在正常范围内。

新加坡国家环境局（NEA）在周四晚间发布的每日雾霾更新报告中表示，新加坡24小时空气污染指数（PSI）预计将保持在较高、中等至较低、不健康的范围内。

目前，苏门答腊南部和加里曼丹的火灾仍在持续产生中等至浓密的烟雾。

报告还指出，来自苏门答腊南部的烟雾也正向新加坡飘去。

预计加里曼丹岛和苏门答腊南部将持续干燥，加上盛行的南风和东南风，如果火灾持续，新加坡国家环境局预计跨境烟霾影响新加坡的风险依然存在。

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。