Air quality in most of Singapore unhealthy as haze persists; PSI in west ‘very unhealthy’

Hazy conditions seen in the Jalan Besar area at 1.15pm on Oct 17.

Published Oct 18, 2026, 07:20 AM

Updated Oct 18, 2026, 07:21 AM

SINGAPORE – The air quality across the island remained poor early on Oct 18, with the 24-hour PSI continuing to lie in the unhealthy range islandwide, except in the west, where the reading of 228 put it in the “very unhealthy” band. At 7am on Oct 18, the PSI readings in the other regions stood at 129 in the north, 173 in the south, 180 in the east and 185 in the central region.

Air quality is considered “unhealthy” when the PSI – a 24-hour rolling average of six key air pollutants – is in the range of 101 to 200, and “very unhealthy” when it is in the range of 201 to 300.

The one-hour PM2.5 readings – measured in micrograms per cubic metre – were all in the elevated range at 7am on Oct 18: north (78), south (99), east (103), west (125) and central (124).

PM2.5 scores from 0 to 55 represent normal values, those between 56 and 150 indicate an elevated concentration of fine particles, while readings between 151 and 250 are considered high and scores above 251 are classified as very high.

In 2026, the highest PSI reading of 229 was recorded from 3pm to 4pm in the central region on Oct 16.

The highest PM2.5 reading this haze season was recorded at 3pm on Oct 14 in the western part of the island at 288.

Singapore is in its 14th consecutive day of unhealthy air since Oct 5 – the longest continuous stretch of poor air quality the country has endured since the 2015 haze crisis. That year, bad air lasted 14 days from Sept 23 to Oct 7.

In its daily haze advisory on the evening of Oct 17, the National Environment Agency forecast that the PSI for could lie between 150 and 220, putting it in the “unhealthy” to “very unhealthy” ranges .

Showers are expected over Singapore and the surrounding region on Oct 18.

“Winds are forecast to shift to blow from the south-south-east or south, which may reduce the transport of smoke haze from Kalimantan to Singapore. However, some smoke haze from Sumatra may drift towards Singapore,” the agency said.

More showers are also forecast over Singapore and parts of Kalimantan on Oct 19 and 20, it added.

It said that the winds are expected to gradually weaken and blow from the south-east or south, which could further decrease the movement of smoke haze from Kalimantan to Singapore.

National Environment Agency

10月17日下午1点15分，惹兰勿刹地区出现雾霾天气。

发布于2026年10月18日上午7:20

更新于2026年10月18日上午7:21

新加坡——10月18日清晨，全岛空气质量依然不佳，24小时空气污染指数（PSI）除西部地区外，其余地区均处于不健康水平。西部地区的PSI读数为228，处于“非常不健康”级别。10月18日上午7点，其他地区的PSI读数分别为：北部129，南部173，东部180，中部185。

当 PSI（六种主要空气污染物的 24 小时滚动平均值）在 101 到 200 之间时，空气质量被认为是“不健康的”；当 PSI 在 201 到 300 之间时，空气质量被认为是“非常不健康的”。

10 月 18 日上午 7 点，PM2.5 一小时读数（以每立方米微克为单位测量）均处于较高水平：北部（78）、南部（99）、东部（103）、西部（125）和中部（124）。

PM2.5 值从 0 到 55 代表正常值，56 到 150 表示细颗粒物浓度升高，151 到 250 的读数被认为是高的，而 251 以上的分数则被归类为非常高。

2026 年，中部地区 10 月 16 日下午 3 点至 4 点记录到最高的 PSI 读数 229。

本雾霾季PM2.5最高读数于10月14日下午3点在岛屿西部记录到，为288。

自10月5日以来，新加坡已连续14天空气质量不佳，这是自2015年雾霾危机以来该国持续时间最长的空气质量差时期。2015年，空气质量差的情况从9月23日持续到10月7日，共14天。

10 月 17 日晚间，国家环境局在其每日雾霾预警中预测，空气污染指数 (PSI) 可能在 150 到 220 之间，处于“不健康”到“非常不健康”的范围内。

预计10月18日新加坡及周边地区将有阵雨。

该机构表示：“预计风向将转为东南偏南或正风，这可能会减少加里曼丹岛的烟霾向新加坡的输送。然而，来自苏门答腊岛的部分烟霾可能会飘向新加坡。”

预报还称，10月19日和20日，新加坡和加里曼丹部分地区也将有更多阵雨。

报告称，预计风力将逐渐减弱，并转为东南风或南风，这可能会进一步减少加里曼丹岛烟雾向新加坡的扩散。

国家环境局