PM2.5 elevated in three regions across Singapore; PSI unhealthy in two

The National Environment Agency said that the haze in Singapore might be reduced on Tuesday since showers are forecast for the country and the surrounding region.

Buildings shrouded in haze in Kallang are seen behind vehicles travelling along the Pan-Island Expressway in the Potong Pasir area on Oct 19, 2026. (Photo: CNA/Wallace Woon)

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SINGAPORE: The 1-hour PM2.5 readings are elevated in the western, central and southern regions of Singapore, ranging from 56 to 89 at 7am.

Readings in the north and east were in the normal band.

Meanwhile, the 24-hour Pollutant Standards Index (PSI) was in the unhealthy range in the west and central regions, with readings of 124 and 114 respectively at 7am.

Air quality in the rest of Singapore remained in the moderate range.

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In its forecast, the National Environment Agency (NEA) said that the haze in Singapore might be reduced on Tuesday since showers are forecast for the country and the surrounding region. However, haze from Sumatra may still drift towards Singapore.

From Tuesday night till Thursday, the winds are likely to turn east-southeasterly with dry conditions forecast over the surrounding region, including parts of Kalimantan, which might bring smoke haze from fires in Kalimantan towards Singapore.

Though there was an improvement in Singapore's air quality, NEA said that the risk of severe transboundary haze remains as dry conditions persist in parts of the southern Southeast Asian region.

ADVICE FOR VULNERABLE GROUPS

When the 24-hour PSI is in the unhealthy range, NEA advises the elderly, pregnant women and children to minimise prolonged or strenuous outdoor physical exertion.

People with chronic diseases, including heart or lung conditions, should avoid such activities.

For decisions on mask use and immediate outdoor activities, the public should refer to the one-hour PM2.5 readings instead.

When the 1-hour PM2.5 readings are in the high band, vulnerable individuals, including the elderly, pregnant women and those with chronic heart or lung conditions, should avoid outdoor activities, according to the Ministry of Health (MOH).

Those who need to go outdoors for immediate activities may wear a well-fitting N95 mask or equivalent to reduce their exposure to haze particles.

When 1-hour PM2.5 readings reach the very high band of 251 and above, healthy individuals should also minimise all outdoor activities. Those who need to venture outdoors may similarly use an N95 mask for protection.

However, MOH said N95 masks are generally not needed for commuting between home and school or work, or in indoor environments.

The ministry has also advised the elderly, pregnant women and those with severe heart or lung conditions who experience breathing difficulties to consult their doctor before using an N95 mask.

Those who experience discomfort while wearing one should take a break from using it.

Besides N95 masks, KN95, FFP2 and KF94 masks are also effective in reducing exposure to haze particles, according to MOH.

Members of the public can visit the HazeMaskGoWhere website for more information on collection locations and live updates on mask availability at the vending machines.

On Oct 13, MOH also advised the public on using masks to protect against haze.

It said surgical masks can help reduce discomfort and the risk of infections by providing a barrier against larger irritant particles.

However, if PM2.5 readings are above 250 and people need to be outdoors for several hours, MOH recommends wearing an N95 or equivalent mask.

Cloth masks generally filter fine particles poorly, although they can reduce discomfort by blocking larger irritant particles in the air.

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国家环境局表示，由于预计新加坡及其周边地区周二将有降雨，新加坡的雾霾可能会有所减轻。

2026年10月19日，在波东巴西地区，行驶于泛岛高速公路上的车辆后方，可以看到加冷地区笼罩在薄雾中的建筑物。（图片：CNA/Wallace Woon）

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新加坡：早上 7 点，新加坡西部、中部和南部地区的 1 小时 PM2.5 读数偏高，范围从 56 到 89。

北部和东部的读数均在正常范围内。

与此同时，西部和中部地区的 24 小时污染物标准指数 (PSI) 处于不健康范围，早上 7 点的读数分别为 124 和 114。

新加坡其他地区的空气质量仍处于中等水平。

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新加坡国家环境局（NEA）在其天气预报中指出，由于预计新加坡及其周边地区周二将有降雨，新加坡的雾霾可能会有所缓解。然而，来自苏门答腊的雾霾仍有可能飘向新加坡。

从周二晚到周四，风向可能会转为东南偏东风，预计周边地区（包括加里曼丹部分地区）将出现干燥天气，这可能会将加里曼丹火灾产生的烟雾带到新加坡。

尽管新加坡的空气质量有所改善，但国家环境局表示，由于东南亚南部部分地区持续干旱，跨境严重雾霾的风险依然存在。

给弱势群体的建议

当 24 小时 PSI 处于不健康范围时，新加坡国家环境局建议老年人、孕妇和儿童尽量减少长时间或剧烈的户外体力活动。

患有慢性疾病（包括心脏病或肺病）的人应避免进行此类活动。

对于是否佩戴口罩以及是否立即进行户外活动，公众应参考一小时 PM2.5 读数。

根据卫生部 (MOH) 的说法，当 1 小时 PM2.5 读数处于高位时，包括老年人、孕妇和患有慢性心脏或肺部疾病的人在内的弱势群体应避免户外活动。

那些因紧急情况需要外出的人可以佩戴贴合度良好的 N95 口罩或同等防护等级的口罩，以减少接触雾霾颗粒。

当1小时PM2.5读数达到251及以上的高值区间时，健康人群也应尽量减少所有户外活动。必须外出的人群同样可以佩戴N95口罩进行防护。

然而，卫生部表示，一般情况下，往返家和学校或工作场所的通勤途中，或在室内环境中，不需要佩戴 N95 口罩。

该部还建议老年人、孕妇以及患有严重心脏或肺部疾病且出现呼吸困难的人在使用 N95 口罩前咨询医生。

如果佩戴时感到不适，应暂停使用。

卫生部表示，除了 N95 口罩外，KN95、FFP2 和 KF94 口罩也能有效减少接触雾霾颗粒。

公众可以访问 HazeMaskGoWhere 网站，了解更多关于口罩收集地点和自动售货机口罩供应情况的实时更新信息。

10月13日，卫生部也建议公众佩戴口罩以防雾霾。

报告称，外科口罩可以阻挡较大的刺激性颗粒，从而帮助减少不适感和感染风险。

但是，如果 PM2.5 读数超过 250，并且人们需要在户外待几个小时，卫生部建议佩戴 N95 或同等口罩。

布口罩虽然可以阻挡空气中较大的刺激性颗粒，从而减轻不适感，但其过滤细小颗粒的效果通常较差。

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