Haze update Oct 5: Poor air quality in 3 regions; Singapore PSI forecast high moderate to mid-unhealthy10月5日雾霾最新消息：新加坡3个地区空气质量较差；PSI指数预测为高、中度至中度不健康。
Air quality in eastern Singapore entered the unhealthy range at 6pm on Monday (Oct 5), bringing the number of regions in the country with unhealthy air quality to three.The other two regions — central and western Singapore — started recording 24-hour Pollutant Standards Index (PSI) in the unhealthy range at 1am and 6am respectively.At 7pm, PSI readings in northern (97)...
Air quality in eastern Singapore entered the unhealthy range at 6pm on Monday (Oct 5), bringing the number of regions in the country with unhealthy air quality to three.
The other two regions — central and western Singapore — started recording 24-hour Pollutant Standards Index (PSI) in the unhealthy range at 1am and 6am respectively.
At 7pm, PSI readings in northern (97) and southern Singapore (97) remained in the moderate range, while the central (124), eastern (104) and western (121) regions recorded unhealthy readings.
Meanwhile, one-hour PM2.5 is in the elevated band across all five regions, with central Singapore recording the highest concentration reading of 109.
Concentration readings of between 56 and 150 denote the elevated band, while readings of 151 to 250 are in the high-band.
In its daily haze situation update on Monday, 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.
周一（10 月 5 日）下午 6 点，新加坡东部的空气质量进入不健康范围，使该国空气质量不健康的地区数量达到三个。
新加坡中部和西部地区的另外两个地区分别于凌晨 1 点和早上 6 点开始记录到 24 小时污染物标准指数 (PSI) 处于不健康范围。
晚上 7 点，新加坡北部 (97) 和南部 (97) 的空气污染指数 (PSI) 读数仍处于中等水平，而中部 (124)、东部 (104) 和西部 (121) 地区的读数则为不健康水平。
与此同时，新加坡所有五个地区的 PM2.5 一小时浓度均处于较高水平，其中新加坡中部地区的浓度读数最高，达到 109。
浓度读数在 56 到 150 之间表示处于较高水平，而读数在 151 到 250 之间则表示处于较高水平。
国家环境局周一发布的每日雾霾情况更新报告称，该国 24 小时空气污染指数 (PSI) 预计将处于中高至中等不健康水平。
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。