PSI forecast to be between 100 and 190 on Oct 19, says NEA

Rain is forecast over Singapore and the surrounding region on Oct 19, while winds are expected to blow from the south-south-east or south, which may limit the transport of smoke haze from Kalimantan to Singapore

Published Oct 18, 2026, 06:59 PM

Updated Oct 18, 2026, 06:59 PM

NEA said the 24-hour PSI will likely be between “100 and 190” on Oct 19, keeping Singapore in the unhealthy band.

Rain and south-south-east or south winds may limit haze from Kalimantan, but smoke from Sumatra could still drift towards Singapore.

Air quality improved on Oct 18, yet PSI stayed unhealthy since Oct 9, and the west hit “very unhealthy” levels, with a peak of 230.

SINGAPORE - The 24-hour Pollutant Standards Index (PSI) is forecast to be between 100 and 190 - in the unhealthy band - on Oct 19, said the National Environment Agency (NEA).

Rain is forecast over Singapore and the surrounding region on Oct 19, while winds are expected to blow from the south-south-east or south, which may limit the transport of smoke haze from Kalimantan to Singapore, the agency said in its daily haze advisory on the evening of Oct 18.

However, some smoke haze from Sumatra may drift towards Singapore, NEA added.

The haze situation may also improve on Oct 20, although it could worsen overnight into Oct 21.

This is because the transport of smoke haze from Kalimantan to Singapore on Oct 20 may be decreased by south-easterly or southerly winds and expected rain surrounding the Republic on that day, according to NEA.

“However, the winds are likely to turn east-south-easterly from Tuesday night, which may bring smoke haze from fires in Kalimantan towards Singapore overnight,” the agency said.

NEA noted that there was an improvement in the air quality in Singapore on Oct 18, due to the turning of winds to blow from the south, though some smoke haze from Kalimantan continued drifting towards Singapore.

The one-hour PM2.5 readings - which measure current air quality - were in the normal and elevated bands across Singapore from 3am on Oct 18. At 6pm on the same day, the readings range from 36 to 69.

However, the PSI readings - a 24-hour rolling average of six key air pollutants - across Singapore have been in at least the unhealthy band since 2am on Oct 9.

The PSI reading in western Singapore was in the very unhealthy band from 8pm on Oct 17, with a reading of 202, till 4pm on Oct 18 (204). A reading of 230 was recorded at 10am and 11am in the area on the same day, making it the highest reading this haze season across Singapore.

PSI readings at 6pm ranged between 109 and 192 across Singapore.

预计10月19日新加坡及其周边地区将有降雨，风向预计为东南偏南或正南风，这可能会限制加里曼丹岛的烟霾向新加坡的输送。

发布于 2026 年 10 月 18 日下午 6:59

更新于2026年10月18日下午6:59

新加坡国家环境局表示，10 月 19 日的 24 小时 PSI 指数可能在“100 至 190”之间，新加坡仍将处于不健康范围内。

降雨和东南偏南风或南风可能会限制来自加里曼丹的雾霾，但来自苏门答腊的烟雾仍可能飘向新加坡。

10 月 18 日空气质量有所改善，但自 10 月 9 日以来，PSI 一直处于不健康状态，西部地区达到了“非常不健康”的水平，峰值达到 230。

新加坡——国家环境局（NEA）表示，预计10月19日24小时污染物标准指数（PSI）将在100至190之间，处于不健康范围内。

该机构在 10 月 18 日晚间发布的每日雾霾咨询中表示，预计 10 月 19 日新加坡及周边地区将有降雨，同时预计风向将来自东南偏南或正南方向，这可能会限制加里曼丹的烟霾向新加坡的输送。

新加坡国家环境局补充说，不过，来自苏门答腊的一些烟雾可能会飘向新加坡。

10月20日雾霾情况可能会有所改善，但10月21日夜间可能会恶化。

据新加坡国家环境局称，这是因为10月20日，加里曼丹岛的烟霾向新加坡的输送可能会因东南风或南风以及当天新加坡周边预计的降雨而减少。

“然而，从周二晚上开始，风向可能会转为东南风，这可能会在夜间将加里曼丹岛火灾产生的烟雾带到新加坡，”该机构表示。

新加坡国家环境局指出，由于风向转为南风，10月18日新加坡的空气质量有所改善，但来自加里曼丹的一些烟雾仍然向新加坡飘来。

10 月 18 日凌晨 3 点起，新加坡各地的 PM2.5 一小时读数（衡量当前空气质量）处于正常和偏高水平。当天下午 6 点，读数范围为 36 至 69。

然而，自 10 月 9 日凌晨 2 点以来，新加坡各地的 PSI 读数（六种主要空气污染物的 24 小时滚动平均值）至少一直处于不健康水平。

10月17日晚8点至10月18日下午4点，新加坡西部地区的空气污染指数（PSI）持续处于非常不健康的水平，读数为202，达到204。当天上午1​​0点和11点，该地区的PSI读数更是高达230，创下新加坡本季雾霾期间的最高纪录。

下午 6 点，新加坡各地的 PSI 读数在 109 到 192 之间。