PM2.5 normal, PSI moderate on Oct 28 morning; afternoon showers may keep haze at bay

Air quality across Singapore remained suitable for normal activities on Wednesday (Oct 28) morning, with hourly PM2.5 in the normal band and 24-hour Pollutant Standards Index (PSI) in the moderate range.

At 9am, concentration readings were in the normal band (0 - 55 µg/m3) in all five regions. It ranged from 33 in western Singapore to 44 in the central region.

Meanwhile, current PSI is within the forecast moderate range, with the highest reading of 78 recorded in western Singapore.

In its daily haze situation update on Tuesday evening , the National Environment Agency (NEA) said showers are expected over Kalimantan, Sumatra and Singapore and surrounding region.

"(This) could continue to help with the haze situation," it added.

Checks on the Meteorological Service Singapore's weather site at 9.40am indicates that thundery showers are still forecast over many areas in the afternoon.

But residents in Singapore should note that winds are expected to blow from the east-southeast or south-southeast on Thursday and Friday.

Notwithstanding the unfavourable wind direction, showers forecast over the region should help to lower the risk of haze, NEA said.

Members of the public are advised to still check the latest hourly PM2.5 readings before taking part in outdoor activities.

周三（10 月 28 日）上午，新加坡各地的空气质量仍然适宜正常活动，每小时 PM2.5 浓度处于正常范围，24 小时污染物标准指数 (PSI) 处于中等范围。

上午9点，五个地区的空气浓度读数均在正常范围内（0-55微克/立方米）。其中，新加坡西部地区的浓度为33微克/立方米，中部地区的浓度为44微克/立方米。

与此同时，目前的PSI值处于预测的中等范围内，新加坡西部地区记录到的最高读数为78。

国家环境局（NEA）在周二晚间发布的每日雾霾情况更新中表示，预计加里曼丹、苏门答腊、新加坡及周边地区将有阵雨。

“（这）或许能继续帮助缓解雾霾情况，”声明补充道。

上午 9 点 40 分查看新加坡气象局天气网站显示，预计下午许多地区仍将有雷阵雨。

但新加坡居民应注意，预计周四和周五风向将为东南偏东或东南偏南。

国家环境局表示，尽管风向不利，但该地区预计的降雨应该有助于降低雾霾风险。

建议公众在参加户外活动前，仍应查看最新的每小时 PM2.5 读数。