PSI hits 102 in eastern Singapore, 2 areas now with ‘unhealthy’ air quality

Hazy conditions seen from Toa Payoh Lorong 1 at 9am on Sept 4.

ST PHOTO: Kua Chee Siong

Published Sep 04, 2026, 09:04 PM

Updated Sep 04, 2026, 09:05 PM

SINGAPORE - The air quality in eastern Singapore reached unhealthy levels on the evening of Sept 4, with a reading of 102 on the 24-hour Pollutant Standards Index (PSI) as at 9pm.

This comes after the central region recorded a reading of 101 at 7am on the same day.

As at 9pm, the PSI reading of central region is 120, while the PSI readings in the north (86), south (85) and west (97) remain in the moderate range.

Air quality is considered unhealthy when the PSI is in the range of 101 to 200, during which NEA advises the public to cut down on outdoor activities.

The last time the PSI hit unhealthy levels due to haze was in October 2023.

In a media statement issued at around noon on Sept 4, the Haze Task Force announced a number of contingency measures hit “very unhealthy” levels, or a PSI reading that exceeds 200.

These include making available air-conditioned rooms in all community centres and selected residents’ committe centres, for people to seek respite from the bad air.

In a weather advisory on Sept 1, the Meteorological Service Singapore said Singapore may experience hazy conditions in the next two weeks as dry weather is set to continue in the surrounding region into the first fortnight of September, despite sporadic showers expected in the second week.

With the prevailing dry conditions, there has been an escalation in the hot spot and smoke haze situation in the surrounding region, it added. Dense smoke haze was observed over southern and central Sumatra and various parts of Kalimantan on most days from around Aug 21.

This follows weeks of forest and land fires in Sumatra and Kalimantan in Indonesia, fuelled by a super El Nino weather phenomenon .

How badly Singapore is affected depends on wind direction.

9月4日上午9点，从大巴窑1巷看到的雾霾天气。

《海峡时报》照片：柯志祥

发布于 2026 年 9 月 4 日晚上 9:04

更新于2026年9月4日晚上9:05

新加坡——9月4日晚，新加坡东部的空气质量达到不健康水平，截至晚上9点，24小时污染物标准指数（PSI）读数为102。

此前，当天早上7点，中部地区记录到的读数为101。

截至晚上 9 点，中部地区的 PSI 读数为 120，而北部（86）、南部（85）和西部（97）的 PSI 读数仍处于中等范围。

当空气污染指数（PSI）在 101 至 200 之间时，空气质量被认为是不健康的，此时国家环境局建议公众减少户外活动。

上一次因雾霾导致空气污染指数（PSI）达到不健康水平是在 2023 年 10 月。

9 月 4 日中午左右，雾霾工作组发布媒体声明称，多项应急措施已达到“非常不健康”的水平，即 PSI 读数超过 200。

这些措施包括在所有社区中心和部分居民委员会中心提供空调房间，供人们躲避污浊的空气。

新加坡气象局在9月1日发布的天气预报中表示，由于周边地区干燥天气将持续到9月上半月，新加坡未来两周可能会出现雾霾天气，尽管预计第二周会有零星阵雨。

报告补充说，由于持续干旱，热点地区及周边地区的烟霾情况有所加剧。自8月21日左右起，苏门答腊南部和中部以及加里曼丹岛部分地区大部分时间都观测到浓烟。

此前，受超级厄尔尼诺现象的影响，印度尼西亚苏门答腊岛和加里曼丹岛已连续数周发生森林和土地火灾。

新加坡受灾程度取决于风向。