Singapore wakes up to fresher air as favourable winds keep PM2.5 at normal levels, PSI moderate

Residents in Singapore started Tuesday (Oct 27) with fresher air and clearer skies as favourable winds continue to keep smoke haze confined over Indonesia's Kalimantan.

In its daily haze situation update on Monday evening , the National Environment Agency (NEA) had forecast the country's 24-hour Pollutant Standards Index (PSI) to be between 60 to 90 — in the moderate range (0 to 100).

The prevailing winds are expected to blow from the northeast or southeast on Tuesday, while winds are forecast to become variable on Wednesday and Thursday.

Showers are also expected over Singapore and the region till Thursday.

Under these conditions, NEA said the likelihood of smoke haze affecting Singapore is low on Tuesday, adding that wet conditions should help keep hotspot and smoke haze activity suppressed on the subsequent two days.

At 10am, hourly PM2.5 readings were in the normal band (0 - 55 µg/m3) across Singapore, with the highest reading of 32 recorded in the western region.

Meanwhile, PSI ranged between 68 in northern Singapore to 75 in the eastern region.

Members of the public are advised to check the latest hourly PM2.5 concentration readings before participating in outdoor activities.

新加坡居民周二（10 月 27 日）迎来了更清新的空气和更晴朗的天空，有利的风向继续将烟雾限制在印度尼西亚加里曼丹岛上空。

国家环境局 (NEA) 在周一晚间的每日雾霾情况更新中预测，该国 24 小时污染物标准指数 (PSI) 将在 60 至 90 之间——处于中等范围 (0 至 100)。

预计周二盛行风向为东北风或东南风，而周三和周四风向将变得不定。

预计新加坡及周边地区周四之前也将有阵雨。

在这种情况下，新加坡国家环境局表示，周二新加坡受烟霾影响的可能性较低，并补充说，潮湿的天气应该有助于在接下来的两天抑制热点和烟霾活动。

上午 10 点，新加坡各地的 PM2.5 小时读数均在正常范围内（0 - 55 µg/m3），其中西部地区记录到的最高读数为 32。

与此同时，新加坡北部地区的 PSI 指数为 68，东部地区的 PSI 指数为 75。

建议公众在参加户外活动前查看最新的PM2.5小时浓度读数。