Haze watch: Singapore air quality mostly unhealthy, only southern region moderate雾霾预警：新加坡大部分地区空气质量不健康，仅南部地区空气质量中等。
Residents in most areas of the Republic woke up to unhealthy air quality on Tuesday (Oct 6), with 24-hour Pollutant Standards Index (PSI) remaining in the range — at all but one region — southern Singapore. Air quality deteriorated through Monday evening, with all five regions recording unhealthy PSI readings by 9pm.At 9am on Tuesday, the PSI ranged from 96...
Residents in most areas of the Republic woke up to unhealthy air quality on Tuesday (Oct 6), with 24-hour Pollutant Standards Index (PSI) remaining in the range — at all but one region — southern Singapore.
Air quality deteriorated through Monday evening, with all five regions recording unhealthy PSI readings by 9pm.
At 9am on Tuesday, the PSI ranged from 96 to 128, with central Singapore recording the highest reading.
The next highest readings were recorded in western (114) and eastern (113) Singapore.
Meanwhile, one-hour PM2.5 has been improving since midnight, with only the central region (57) marginally in the elevated band.
All four other regions — northern (42), western (43), eastern (49) and southern (39) — are in the normal band.
In its daily haze situation updated issued earlier on Monday evening, the National Environment Agency said the country's 24-hour PSI is forecast to be in the high-moderate to mid-unhealthy range.
It noted that moderate to dense smoke haze plumes from southern Sumatra were observed to have drifted towards Singapore, while smoke haze was also observed from fires in Kalimantan.
Data from the ASEAN Meteorological Centre shows that the number of hotspots in Kalimantan spiked from 175 to 533 on Oct 4.
Given that dry conditions are expected to persist over southern Sumatra and Kalimantan, and with the prevailing south-easterly or east-south-easterly winds, smoke haze could continue to affect Singapore, NEA stated.
Members of the public should check the latest one-hour PM2.5 concentration readings before participating in outdoor activities.
周二（10 月 6 日），新加坡大部分地区的居民醒来后发现空气质量不佳，除新加坡南部地区外，其他所有地区的 24 小时污染物标准指数 (PSI) 均处于不健康范围内。
周一晚间空气质量持续恶化，到晚上 9 点，所有五个地区的空气质量指数 (PSI) 均达到不健康水平。
周二上午9点，新加坡的PSI指数在96到128之间，其中新加坡中部地区的读数最高。
新加坡西部（114）和东部（113）的读数次之。
与此同时，自午夜以来，一小时 PM2.5 浓度有所改善，只有中心地区（57）略微处于较高水平。
其他四个地区——北部（42）、西部（43）、东部（49）和南部（39）——均处于正常范围内。
国家环境局在周一晚间早些时候发布的每日雾霾情况更新中表示，该国 24 小时 PSI 指数预计将处于高至中等偏上到中等不健康水平。
报告指出，来自苏门答腊南部的中等至浓重的烟霾飘向新加坡，同时加里曼丹的火灾也产生了烟霾。
东盟气象中心的数据显示，10 月 4 日，加里曼丹岛的热点数量从 175 个激增至 533 个。
新加坡国家环境局表示，鉴于苏门答腊南部和加里曼丹岛预计将持续干旱，且盛行东南风或东南偏东风，烟雾可能会继续影响新加坡。
公众在参加户外活动前，应查看最新的1小时PM2.5浓度读数。