Haze in Singapore: Air quality improves as PM2.5 readings in 3 regions return to ‘normal’

At 7am, 24-hour PSI readings remained in the "unhealthy" band across all five regions. Read more at straitstimes.com.

The Straits TimesAnn Neo2026-10-25 07:14查看原文 ↗

Haze conditions seen at the Merlion Park at 1.40pm on Oct 24.

Published Oct 25, 2026, 07:14 AM

Updated Oct 25, 2026, 07:14 AM

SINGAPORE – The air quality in Singapore improved in the morning of Oct 25, with the hourly PM2.5 readings returning to “normal” for three regions, even as the 24-hour PSI levels remained in the “unhealthy” band across the island.

At 7am, the PM2.5 readings were in the “normal” range in the north (55), south (44) and central (54), while the eastern and western regions remained in the “elevated” band in 61 and 62, respectively.

PM2.5 readings are gauged hourly and reflect the current air quality. Scores from zero to 55 represent normal values, those between 56 and 150 indicate an elevated concentration of fine particles.

Meanwhile, the 24-hour Pollutant Standards Index (PSI) stood in the unhealthy range across the island: 111 in the west, 104 in the south, 112 in the east, 140 in the west and 115 in the central.

Air quality is considered good to moderate when the PSI – a 24-hour rolling average of six key air pollutants – is in the range of 0 to 100, and unhealthy when it is in the range of 101 to 200.

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

Air quality in Singapore saw a brief respite early on Oct 23, when PSI readings were in the good to moderate range and PM2.5 levels were in the normal range. However, it started to deteriorate early on Oct 24.

In its daily advisory on the evening of Oct 24, the National Environment Agency (NEA) said moderate to unhealthy air quality is expected on Oct 25, with the PSI forecast to be in the range of 80 to 130.

Smoke haze from Sumatra was seen drifting towards Singapore and was also observed over Kalimantan on Oct 24, NEA said.

On Oct 25, winds are expected to blow from the south-west or west, which could limit transport of smoke haze to Singapore. Showers are expected over Singapore and the surrounding region which may help with the haze conditions, added NEA.

Winds are expected to continue blowing from the south-west or west on Oct 26 and 27, and with showers expected over Singapore and the vicinity, the haze situation is “likely to improve”, added the agency.

National Environment Agency

10 月 24 日下午 1 点 40 分，鱼尾狮公园出现雾霾天气。

发布于 2026 年 10 月 25 日上午 7:14

更新于2026年10月25日上午7:14

新加坡——10月25日上午，新加坡的空气质量有所改善，三个地区的PM2.5小时读数恢复到“正常”水平，尽管全岛24小时PSI值仍处于“不健康”范围内。

早上 7 点，北部（55）、南部（44）和中部（54）的 PM2.5 读数处于“正常”范围，而东部和西部地区分别保持在“较高”范围，分别为 61 和 62。

PM2.5 读数每小时测量一次，反映当前的空气质量。0 到 55 的数值代表正常值，56 到 150 之间的数值表示细颗粒物浓度升高。

与此同时，全岛 24 小时污染物标准指数 (PSI) 均处于不健康范围：西部 111，南部 104，东部 112，西部 140，中部 115。

当 PSI（六种主要空气污染物的 24 小时滚动平均值）在 0 到 100 之间时，空气质量被认为是良好到中等；当 PSI 在 101 到 200 之间时，空气质量被认为是不健康的。

当空气质量超过“不健康”阈值时，人们，特别是老年人、儿童和有健康问题的人，应该开始减少户外活动。

10月23日清晨，新加坡空气质量短暂回暖，空气污染指数（PSI）处于良好至中等水平，PM2.5浓度也处于正常范围。然而，10月24日清晨，空气质量开始恶化。

国家环境局 (NEA) 在 10 月 24 日晚间的每日公告中表示，预计 10 月 25 日空气质量将达到中度至不健康水平，PSI 指数预计将在 80 至 130 之间。