Haze in Singapore: PSI in unhealthy range for much of the island新加坡雾霾：全岛大部分地区空气污染指数（PSI）处于不健康范围。
Singapore haze: PSI remains in unhealthy range across much of the island as dry conditions and smoke drift in from Indonesia. Read more at straitstimes.com.
Hazy conditions as seen from Clementi in the direction of Jurong Island on the evening of Oct 6.
ST PHOTO: KELVIN CHNG
Published Oct 07, 2026, 06:11 AM
Updated Oct 07, 2026, 06:11 AM
SIGNAPORE – Singaporeans living in the west, central and east regions continued to experience an unhealthy level of pollutants in the air early on Oct 7 .
The 24-hour Pollutant Standards Index (PSI) stood at 115 in the west, 129 in the central region and 118 in the east.
Air quality is considered unhealthy when the PSI – a 24-hour rolling average of six key air pollutants and used in planning for outdoor activities the next day – is in the range of 101 to 200.
PM2.5 readings, which are used as a gauge for immediate activities, were elevated in the same regions: 86 in the west, 68 in the central region and 56 in the east.
But the PSI for both the north (99) and south (97) regions remained at moderate levels, with the PM2.5 reading also remaining normal at 52 and 49 respectively.
An hourly PM2.5 reading between 56 and 150 indicates an elevated concentration of fine particles.
At 6am on Oct 7, the PSI readings in the east, central and west regions had stood in the unhealthy range for over 24 hours, with levels in the north and south also dipping into this band for several hours before inching back into the moderate range.
In its daily haze advisory on Oct 6, the National Environment Agency said that with the prevailing winds expected to blow from the east-south-east to the south-east, the 24-hour PSI is forecast to be in the “high moderate to mid unhealthy” range.
Dry conditions are expected to persist over Kalimantan as well as central and southern Sumatra in neighbouring Indonesia, where moderate to dense smoke plumes were observed to be drifting towards Singapore.
The PSI crossed into the unhealthy range four weeks ago, hitting 101 in central Singapore on the morning of Sept 4. In the days that followed, readings in the central, eastern and western parts of the island occasionally crossed into the unhealthy range.
The highest reading of the year – 164 in central Singapore – was recorded on Sept 29.
The developments in September mark 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.
Some experts have predicted that the haze in Singapore in 2026 could last for a longer period due to this year’s “Godzilla” El Nino event, which could reduce rainfall and result in higher temperatures over October-November, compared with non-El Nino years.
During non-El Nino years, the dry south-west monsoon season usually tapers off by September, and the start of the rainy north-east monsoon season tends to set in around late November.
The Meteorological Service Singapore (MSS) told The Straits Times that El Nino events, particularly strong ones, tend to delay the retreat of the dry season for much of the southern ASEAN region and that the MSS, is expecting a transition only during late October or early November for Singapore, later than in the previous two years.
National Environment Agency
Meteorological Service Singapore
10月6日傍晚，从金文泰方向望向裕廊岛，可以看到一片雾霾天气。
《海峡时报》摄影：KELVIN CHNG
发布于 2026 年 10 月 7 日上午 6:11
更新于2026年10月7日 上午6:11
新加坡——10月7日清晨，新加坡西部、中部和东部地区的居民继续感受到空气中污染物含量超标。
24 小时污染物标准指数 (PSI) 西部为 115，中部地区为 129，东部为 118。
当 PSI（六种主要空气污染物的 24 小时滚动平均值，用于规划第二天的户外活动）在 101 到 200 的范围内时，空气质量被认为是不健康的。
PM2.5 读数（用作衡量当前活动的指标）在同一地区也偏高：西部地区为 86，中部地区为 68，东部地区为 56。
但北部（99）和南部（97）地区的空气污染指数均保持在中等水平，PM2.5 读数也分别保持在 52 和 49 的正常水平。
PM2.5 小时读数在 56 至 150 之间表示细颗粒物浓度升高。
10 月 7 日早上 6 点，东部、中部和西部地区的空气污染指数 (PSI) 读数已连续 24 小时处于不健康范围，北部和南部地区的水平也曾一度降至该范围数小时，之后才缓慢回升至中等范围。
国家环境局在 10 月 6 日发布的每日雾霾预警中表示，由于盛行风向预计为东南偏东至东南风，24 小时 PSI 指数预计将处于“中度至中度不健康”的范围内。
预计加里曼丹岛以及邻国印度尼西亚的苏门答腊中部和南部将持续干旱，观测到中等至浓重的烟雾正向新加坡飘去。
四周前，新加坡空气污染指数（PSI）进入不健康范围，9月4日上午，新加坡中部地区的PSI达到101。在接下来的几天里，该岛中部、东部和西部地区的读数偶尔也会进入不健康范围。
今年最高读数——新加坡中部 164——出现在 9 月 29 日。
9 月份的情况标志着自 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。
一些专家预测，由于今年的“哥斯拉”厄尔尼诺现象，新加坡2026年的雾霾可能会持续更长时间，与非厄尔尼诺年份相比，这可能会导致降雨减少，并在10月至11月期间气温升高。
在非厄尔尼诺年份，干燥的西南季风季节通常在 9 月份逐渐结束，而多雨的东北季风季节往往在 11 月下旬左右开始。
新加坡气象局 (MSS) 告诉《海峡时报》，厄尔尼诺现象，尤其是强厄尔尼诺现象，往往会推迟东盟南部大部分地区旱季的结束，MSS 预计新加坡的旱季过渡期要到 10 月下旬或 11 月初才会到来，比前两年要晚。
国家环境局
新加坡气象局