Haze in Singapore: Air quality back in the unhealthy range

There had been a brief respite from the haze early on Oct 23. Read more at straitstimes.com.

The Straits TimesLaura Chia2026-10-24 07:11查看原文 ↗

Buildings in Woodlands, as seen towards the northeastern direction, during hazy conditions at 6.15pm on Oct 23, 2026. The 24-hr PSI is 85 with 1-hr PM2.5 at 80 in the northen part of Singapore at 6pm. ST PHOTO: KEVIN LIM pixhaze23

Air quality in Singapore deteriorated overnight on Oct 24.

Published Oct 24, 2026, 07:11 AM

Updated Oct 24, 2026, 07:11 AM

SINGAPORE – The air quality across the island deteriorated overnight, with the 24-hour PSI recording unhealthy levels of air pollution early on Oct 24.

At 7am, the PSI readings were 115 in the north and south regions, 117 in the east, 142 in the west and 133 in the central region.

The PM2.5 readings – which are gauged hourly and reflect the current air quality – were also elevated across the country.

At 7am, the PM2.5 readings were 79 in the north, 78 (south), 68 (east), 107 (west) and 94 (central).

There had been a brief respite from the haze early on Oct 23, with the PSI in the good to moderate range in the morning of Oct 23, when PSI readings were in the good to moderate range and PM2.5 levels were in the normal range.

However, the air quality began worsening just before noon that day, when the PM2.5 levels began rising and they have continued fluctuating in the elevated range since, spiking at 146 at midnight, just five points shy of the “high” range.

Singapore has been experiencing unhealthy air quality, denoted by 24-hour PSI readings above 101, since Oct 5.

The 24-hour PSI, which is a rolling index of six key air pollutants, reflects air quality in Singapore over the past day.

When air quality breaches this threshold, people, especially the elderly, children and those with health issues, should start scaling down outdoor activities.

In its daily advisory on the evening of Oct 23, the National Environment Agency (NEA) said moderate to unhealthy air quality is expected on Oct 24, with the PSI forecast to be in the range of 90 to 140.

Smoke haze from Sumatra was seen drifting towards Singapore and was also observed over Kalimantan on Oct 23, NEA said.

While showers are forecast over Singapore and the surrounding region on Oct 24, some smoke haze may be transported towards Singapore from Sumatra under prevailing south-southeasterly or south-southwesterly winds, it added.

Hazy conditions may improve from Oct 25.

Winds are expected to blow from the south-west or west from Oct 25, NEA said.

This may help reduce the smoke haze transported to Singapore, it said, adding that showers over Singapore and areas nearby could also help with the haze situation.

National Environment Agency

10月24日晚，新加坡空气质量恶化。

发布于 2026 年 10 月 24 日上午 7:11

更新于2026年10月24日上午7:11

新加坡——全岛空气质量一夜之间恶化，10 月 24 日清晨，24 小时空气污染指数 (PSI) 记录到空气污染达到不健康水平。

早上 7 点，北部和南部地区的 PSI 读数为 115，东部为 117，西部为 142，中部为 133。

全国范围内的 PM2.5 读数（每小时测量一次，反映当前空气质量）也升高了。

早上 7 点，PM2.5 读数北部为 79，南部为 78，东部为 68，西部为 107，中部为 94。

10 月 23 日清晨，雾霾曾短暂缓解，空气污染指数 (PSI) 达到良好至中等水平，PM2.5 浓度也处于正常范围内。

然而，当天中午之前空气质量开始恶化，PM2.5 水平开始上升，此后一直在较高范围内波动，午夜时分达到 146 的峰值，距离“高”范围仅差 5 个点。

自 10 月 5 日以来，新加坡的空气质量一直处于不健康状态，24 小时 PSI 读数超过 101。

24 小时 PSI 指数是六种主要空气污染物的滚动指数，反映了新加坡过去一天的空气质量。