Haze update for Oct 3: Singapore's PSI forecast to be in high-moderate to low-unhealthy range10月3日雾霾最新消息：新加坡空气污染指数（PSI）预计处于高至中等偏低至不健康范围。
Air quality in the Republic's central region deteriorated on Saturday (Oct 3) morning, after the 24-hour Pollutant Standards Index (PSI) entered the unhealthy range.At 5pm, PSI ranged from 79 to 104 — in the moderate to unhealthy range — with central Singapore recording the highest reading of 104. PSI readings of between 101 and 200 denote the unhealthy range.Meanwhile, one-hour...
Air quality in the Republic's central region deteriorated on Saturday (Oct 3) morning , after the 24-hour Pollutant Standards Index (PSI) entered the unhealthy range.
At 5pm, PSI ranged from 79 to 104 — in the moderate to unhealthy range — with central Singapore recording the highest reading of 104.
PSI readings of between 101 and 200 denote the unhealthy range.
Meanwhile, one-hour PM2.5 ranges from 30 to 56, with only central Singapore having a concentration reading in elevated band.
In its daily haze situation update on Saturday evening, the National Environment Agency (NEA) said the country's 24-hour PSI is forecast to be in the high-moderate to low-unhealthy range.
It noted that moderate to dense smoke plumes from southern Sumatra were observed drifting towards Singapore and surrounding region, while smoke haze was also observed from fires in Kalimantan.
Data from the ASEAN Specialised Meteorological Centre show that the number of hotspots in Kalimantan increased slightly from 227 on Oct 1 to 232 on Oct 2.
There was also a spike in the number of hotspots detected in Sumatra, with 232 hotspots detected, up from 127 a day earlier.
Given that dry weather conditions are expected to persist over Singapore and the surrounding region on Sunday, and the prevailing south-easterly or south-westerly winds, there remains a risk of smoke haze affecting Singapore, NEA pointed out.
Members of the public should check the latest one-hour PM2.5 concentration readings before engaging in outdoor activities.
10 月 3 日星期六上午，共和国中部地区的空气质量恶化，24 小时污染物标准指数 (PSI) 进入不健康范围。
下午 5 点，PSI 指数在 79 到 104 之间，处于中度至不健康范围内，其中新加坡中部地区读数最高，为 104。
PSI读数在101到200之间表示不健康范围。
与此同时，一小时 PM2.5 浓度范围为 30 至 56，只有新加坡中部地区的浓度读数处于较高水平。
国家环境局（NEA）在周六晚间发布的每日雾霾情况更新中表示，该国24小时空气污染指数（PSI）预计将处于高-中度至低-不健康范围内。
报告指出，从苏门答腊南部观测到中等至浓重的烟柱向新加坡及周边地区飘移，同时还观测到加里曼丹火灾产生的烟雾。
东盟专业气象中心的数据显示，加里曼丹岛的热点数量从 10 月 1 日的 227 个略微增加到 10 月 2 日的 232 个。
苏门答腊岛检测到的热点地区数量也出现激增，检测到 232 个热点地区，而前一天为 127 个。
鉴于预计周日新加坡及周边地区将持续干燥天气，且盛行东南风或西南风，新加坡仍有可能受到烟霾影响，国家环境局指出。
公众在进行户外活动前，应查看最新的1小时PM2.5浓度读数。