Singapore haze: Air quality improves as 24-hour PSI readings in two regions drop out of unhealthy band

Though the hotspot and smoke haze situation may improve in areas experiencing showers, it may continue to stay elevated in areas experiencing prolonged periods of dry weather, "with a continued risk of transboundary haze occurrence", NEA said on Sunday.

A view of the haze from Chinatown on the afternoon of Oct 23, 2026. (File photo: CNA/Ooi Boon Keong)

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SINGAPORE: Air quality improved across Singapore on Sunday (Oct 25), with the 24-hour Pollutant Standards Index (PSI) readings in two regions dropping into the good to moderate band.

The reading in the south dropped out of the unhealthy range at 10am when it dipped to 100, and that in the north followed at 1pm as it fell to 99. At 3pm, the readings in the south and north were in the moderate range.

Readings in western, central and eastern Singapore were also declining but remained in the unhealthy band.

Hourly PM2.5 readings, meanwhile, were in the normal band in all five regions.

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On Saturday, the National Environment Agency (NEA) said the 24-hour PSI for Sunday was expected to range from 80 to 130, spanning the good to moderate and unhealthy bands.

In its Sunday morning advisory, NEA said that scattered hotspots were detected in Kalimantan, while moderate to dense smoke plumes were observed to emanate from hotspot clusters in larger parts of Kalimantan, central Sulawesi and southern Papua.

Though the hotspot and smoke haze situation may improve in areas experiencing showers, it may continue to stay elevated in areas experiencing prolonged periods of dry weather, "with a continued risk of transboundary haze occurrence", NEA said. NEA has advised the public to refer to the 24-hour PSI forecast when planning outdoor activities and to check the latest 1-hour PM2.5 readings before undertaking immediate outdoor activities.

When hourly PM2.5 concentrations are in the elevated band, healthy individuals should reduce strenuous outdoor activities for the next hour.

Vulnerable groups, including children, elderly people, pregnant women and those with chronic heart or lung conditions, should avoid strenuous outdoor activities during that period.

For Sunday, NEA advised healthy individuals to reduce prolonged or strenuous outdoor physical exertion, while elderly people, pregnant women and children should minimise such activities.

People with chronic heart or lung disease should avoid prolonged or strenuous outdoor physical exertion.

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国家环境局周日表示，虽然降雨地区的热点和烟霾情况可能会有所改善，但在持续干旱的地区，情况可能仍会居高不下，“跨境烟霾发生的风险依然存在”。

2026年10月23日下午，从唐人街看到的雾霾景象。（资料照片：CNA/Ooi Boon Keong）

这段音频是由人工智能工具生成的。

新加坡：周日（10 月 25 日），新加坡空气质量有所改善，两个地区的 24 小时污染物标准指数 (PSI) 读数降至良好至中等水平。

上午 10 点，南部地区的读数降至 100，脱离了不健康范围；下午 1 点，北部地区的读数也降至 99。下午 3 点，南部和北部的读数均处于中等范围。

新加坡西部、中部和东部的读数也在下降，但仍处于不健康范围内。

与此同时，五个地区的PM2.5小时读数均处于正常范围内。

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周六，国家环境局 (NEA) 表示，预计周日的 24 小时空气污染指数 (PSI) 将在 80 到 130 之间，涵盖良好、中等和不健康等级。

国家环境局在周日早晨发布的公告中表示，加里曼丹岛检测到零星热点，而加里曼丹岛、苏拉威西岛中部和巴布亚岛南部的大部分地区都观测到中度至重度烟雾从热点聚集区冒出。

国家环境局表示，虽然降雨地区的热点和烟霾情况可能会有所改善，但在持续干旱的地区，这些情况可能仍将居高不下，“跨境烟霾的风险依然存在”。国家环境局建议公众在计划户外活动时参考24小时空气污染指数（PSI）预报，并在进行户外活动前查看最新的1小时PM2.5读数。

当每小时 PM2.5 浓度处于较高水平时，健康人群应在接下来的一个小时内减少剧烈的户外活动。

包括儿童、老年人、孕妇以及患有慢性心脏或肺部疾病的人在内的弱势群体，在此期间应避免进行剧烈的户外活动。

新加坡国家环境局建议，周日身体健康的人士应减少长时间或剧烈的户外体力活动，而老年人、孕妇和儿童则应尽量减少此类活动。

患有慢性心脏病或肺病的人应避免长时间或剧烈的户外体力活动。

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