What’s the latest haze situation in Singapore?

Hazy conditions seen in Bishan at 9.45am on Oct 15.

ST PHOTO: KUA CHEE SIONG

Published Oct 15, 2026, 11:45 AM

Updated Oct 15, 2026, 11:45 AM

SINGAPORE – The haze situation in Singapore has worsened over the past week, with the one-hour PM2.5 in the west breaching “very high” levels in the afternoon of Oct 14.

Similarly, the Pollutant Standards Index (PSI) – a 24-hour rolling average of six key air pollutants including PM2.5 – entered the “very unhealthy” range at 9pm that day in the west.

For those who want a quick check on the latest haze situation, The Straits Times has created a widget for easy reference . The left tab shows in real time the 24-hour PSI readings across five regions in Singapore: north, south, east, west and central. The tab on the right provides the PM2.5 figures for the same five regions.

During hazy periods, the one-hour PM2.5 – an indicator of fine micro-pollutants in the air – is what people should be watching because it points to current air quality. PM2.5 levels should be checked immediately before outdoor activities such as going for a jog.

PM2.5 is the dominant pollutant during periods of transboundary haze, and has the most influence over the 24-hour PSI readings.

The 24-hour PSI is computed based on the daily average concentration of six pollutants, including PM2.5, sulphur dioxide, carbon monoxide and ozone. It is an index to provide easily understandable information about daily levels of air quality.

Fuller details on the differences between PSI and PM2.5 can be found in this ST explainer .

Also visit the ST live blog for the latest news and updates.

National Environment Agency

10月15日上午9点45分，碧山出现雾霾天气。

《海峡时报》摄影：郭志雄

发布于 2026 年 10 月 15 日上午 11:45

更新于2026年10月15日上午11:45

新加坡——过去一周，新加坡的雾霾情况恶化，10 月 14 日下午，西部地区一小时 PM2.5 浓度突破了“非常高”的水平。

同样，污染物标准指数（PSI）——包括 PM2.5 在内的六种主要空气污染物的 24 小时滚动平均值——当天晚上 9 点在西部地区进入了“非常不健康”的范围。

为了方便大家快速了解最新的雾霾情况，《海峡时报》制作了一个便捷的参考工具。左侧标签页实时显示新加坡五个区域（北部、南部、东部、西部和中部）的24小时空气污染指数（PSI）读数。右侧标签页则提供这五个区域的PM2.5浓度数据。

在雾霾天气，人们应该关注一小时PM2.5值——它是空气中细颗粒物浓度的指标——因为它反映了当前的空气质量。在进行户外活动（例如慢跑）之前，应立即查看PM2.5值。

PM2.5 是跨境雾霾期间的主要污染物，对 24 小时 PSI 读数的影响最大。

24小时空气质量指数（PSI）是根据六种污染物（包括PM2.5、二氧化硫、一氧化碳和臭氧）的日均浓度计算得出的。它是一个能够提供易于理解的每日空气质量水平信息的指标。

有关 PSI 和 PM2.5 之间差异的更详细信息，请参阅这篇 ST 解释文章。

也请访问 ST 实时博客，获取最新消息和更新。

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