Haze update Oct 1: Singapore enters October with PSI forecast to reach low-unhealthy range

Air quality in Singapore remained in the moderate range on Thursday (Oct 1) as moderate to thundery showers fell over several parts of the island.

At 6pm, the 24-hour Pollutant Standards Index (PSI) ranged between 60 and 74, with central and eastern Singapore recording the highest reading of 74.

Meanwhile, one-hour PM2.5 concentration readings remained in the normal band across all five regions.

In its daily haze situation update on Thursday evening, the National Environment Agency (NEA) said the country's 24-hour PSI forecast is expected to be in the moderate to low-unhealthy range.

It added that moderate to dense smoke plumes were observed in southern Sumatra and Kalimantan, and that smoke haze from southern Kalimantan was seen drifting towards the vicinity of Singapore.

Despite showers forecast for Singapore and the surrounding region, prevailing south-easterly or southerly winds could transport smoke haze towards the Republic, NEA said.

Members of the public are advised to check the one-hour PM2.5 concentration readings before taking part in outdoor activities over the next few hours.

周四（10月1日），新加坡空气质量仍处于中等水平，岛上多个地区普降中到雷阵雨。

下午 6 点，24 小时污染物标准指数 (PSI) 介于 60 至 74 之间，其中新加坡中部和东部地区的读数最高，为 74。

与此同时，五个地区的PM2.5一小时浓度读数均保持在正常范围内。

国家环境局（NEA）在周四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）预计将处于中度至轻度不健康范围。

报告还指出，苏门答腊南部和加里曼丹岛观测到中等至浓重的烟雾，加里曼丹岛南部的烟雾正向新加坡附近飘去。

新加坡国家环境局表示，尽管新加坡及其周边地区预报有阵雨，但盛行的东南风或南风可能会将烟雾吹向新加坡。

建议公众在接下来的几个小时内参加户外活动前，查看一小时 PM2.5 浓度读数。