Haze in Singapore: Air quality may worsen, with PSI forecast to be entirely in unhealthy range

Previous forecasts from early September were in the moderate, or moderate to unhealthy ranges.

ST PHOTO: KELVIN CHNG

Published Oct 07, 2026, 07:53 PM

Updated Oct 07, 2026, 07:53 PM

Singapore’s haze may worsen on Oct 8, with NEA forecasting the 24-hour PSI to be entirely in the unhealthy range for the first time since daily advisories began on Sept 4.

Dry weather in Sumatra and Kalimantan may keep smoke drifting to Singapore. All five regions were already in the unhealthy PSI range on Oct 7.

Healthy people should cut outdoor exertion, while vulnerable groups should avoid it if PSI readings are in the unhealthy range. A September study linked small PM2.5 rises to more asthma and respiratory emergency visits.

SINGAPORE – The haze situation here may worsen on Oct 8, with the National Environment Agency (NEA) forecasting the 24-hour Pollutant Standards Index (PSI) reading s for the day to be in the unhealthy range.

It is the first time since the agency started issuing daily haze advisories on Sept 4 that the forecast has fallen completely within the unhealthy band of 101 and 200. Previous forecasts in the same period were in the moderate, or moderate to unhealthy range s .

In its daily advisory, sent at about 6.20pm on Oct 7, NEA s aid that dry weather is expected to continue over central and southern parts of Sumatra in Indonesia, as well as many parts of Kalimantan.

“Under the prevailing southeasterly to southerly winds, smoke haze from these areas may continue to drift towards Singapore,” the agency said.

When the 24-hour PSI readings are in the unhealthy band, those who are healthy should reduce prolonged or strenuous outdoor physical activities, according to the haze advisory.

Vulnerable people – including the elderly, pregnant women, children and those with chronic lung or heart disease – should minimise or avoid such activities entirely.

As at 7pm on Oct 7, all five regions here registered PSI readings in the unhealthy range , with measurements of 106 in the north, 113 in the south, 130 in the east, 143 in the west and 136 in the central region .

The readings all across Singapore have remained in the unhealthy range since noon on Oct 7, matching NEA’s daily forecast on Oct 6 that readings for Oct 7 would range from high-moderate to mid-unhealthy.

The PSI is a 24-hour rolling average of six key air pollutants and guides people when planning outdoor activities for the following day.

Meanwhile, the 1-hr PM2.5 reading – which points to the current air quality and is used as a gauge for immediate activities – was in the elevated band for most of Oct 7.

It briefly crossed into the high band at 4pm in the western part of Singapore with a 152 reading , before falling back into the elevated band at 5pm.

An hourly PM2.5 reading between 151 and 250 indicates a high concentration of fine particles, while a reading between 56 and 150 signals an elevated level.

A September study led by local researchers showed that even small spikes in PM2.5 levels are linked to an increase in emergency department visits for asthma and chronic respiratory disease.

These developments over the past month marked the first time since October 2023 that the PSI in Singapore hit unhealthy levels because of haze, with the authorities earlier warning of the risk of haze between June and October as a result of warmer and drier conditions brought on by both El Nino and the Indian Ocean Dipole.

National Environment Agency

Meteorological Service Singapore

9月初的预测结果为中等，或中等到不健康。

《海峡时报》摄影：KELVIN CHNG

发布于 2026 年 10 月 7 日晚上 7:53

更新于2026年10月7日晚上7:53

新加坡的雾霾可能在 10 月 8 日加剧，国家环境局预测，自 9 月 4 日开始每日发布空气质量预警以来，24 小时空气污染指数将首次完全处于不健康范围内。

苏门答腊和加里曼丹的干燥天气可能导致烟雾持续飘向新加坡。10月7日，这五个地区的空气污染指数（PSI）均已达到不健康水平。

健康人群应减少户外活动，而当空气污染指数（PSI）读数处于不健康范围时，易感人群则应避免户外活动。9月份的一项研究表明，PM2.5浓度的小幅上升与哮喘和呼吸系统急诊就诊人数的增加有关。

新加坡——10月8日，新加坡的雾霾情况可能会恶化，国家环境局（NEA）预测，当天的24小时污染物标准指数（PSI）读数将处于不健康范围。

这是自该机构 9 月 4 日开始发布每日雾霾预警以来，预测值首次完全落在 101 至 200 的不健康范围内。此前同期预测值均处于中等或中等至不健康范围内。

10 月 7 日下午 6 点 20 分左右，NEA 在其每日公告中表示，预计印度尼西亚苏门答腊岛中部和南部以及加里曼丹岛的许多地区将继续出现干燥天气。

该机构表示：“在盛行的东南风至南风的影响下，这些地区的烟雾可能会继续向新加坡飘去。”

根据雾霾预警，当 24 小时 PSI 读数处于不健康范围时，健康人群应减少长时间或剧烈的户外体育活动。

弱势群体——包括老年人、孕妇、儿童以及患有慢性肺病或心脏病的人——应尽量减少或完全避免此类活动。

截至 10 月 7 日晚上 7 点，这里所有五个地区的空气污染指数 (PSI) 读数均处于不健康范围，北部地区测量值为 106，南部地区为 113，东部地区为 130，西部地区为 143，中部地区为 136。

自 10 月 7 日中午以来，新加坡各地的空气质量读数一直处于不健康范围内，这与国家环境局 10 月 6 日的每日预测相符，即 10 月 7 日的读数将从高到中等不健康水平不等。

PSI 是六种主要空气污染物的 24 小时滚动平均值，可指导人们计划第二天的户外活动。

与此同时，1 小时 PM2.5 读数（反映当前空气质量，并被用作衡量即时活动的指标）在 10 月 7 日的大部分时间里都处于较高水平。

下午 4 点，新加坡西部地区的气温短暂进入高位，读数达到 152，随后在下午 5 点回落到正常水平。

PM2.5 小时读数在 151 至 250 之间表示细颗粒物浓度较高，而读数在 56 至 150 之间则表示浓度偏高。

当地研究人员在 9 月份进行的一项研究表明，即使 PM2.5 水平出现小幅飙升，也会导致因哮喘和慢性呼吸系统疾病而前往急诊室就诊的人数增加。

过去一个月的这些发展标志着自 2023 年 10 月以来，新加坡的空气污染指数 (PSI) 首次因雾霾达到不健康水平。此前，当局曾警告称，由于厄尔尼诺现象和印度洋偶极子现象带来的气候变暖和干燥，6 月至 10 月期间存在雾霾风险。

国家环境局

新加坡气象局