Air quality across Singapore to be between high moderate and low unhealthy range in next 24 hours

The 24-hour Pollutant Standards Index for the central region dipped to 87 at 6pm on Sept 6. Air quality is considered unhealthy when the PSI is in the range of 101 to 200.

ST PHOTO: JASON QUAH

Published Sep 06, 2026, 07:51 PM

Updated Sep 06, 2026, 07:51 PM

SINGAPORE – Air quality over the next 24 hours from 6pm on Sept 6 is forecast to continue to range from the higher end of the moderate category to the lower end of the unhealthy spectrum.

The National Environment Agency (NEA) said in an advisory on Sept 6 that as at 6pm that day, the 24-hour Pollutant Standards Index (PSI) was in the moderate range of 73 to 87.

The 24-hour PSI for the central region dipped to 87 at 6pm on Sept 6, after reaching unhealthy levels the previous night with a high of 103 at 7pm on Sept 5, according to NEA’s website .

Readings in the north (73), south (74), east (86) and west (83) also remained in the moderate range as at 6pm on Sept 6.

Air quality is considered unhealthy when the PSI is in the range of 101 to 200, during which the public is advised to cut down on outdoor activities.

PSI readings of 51 to 100 are considered moderate, while values of 0 to 50 are in the “good” range.

NEA said that fair and windy conditions occurred over Singapore on Sept 6.

It added that with ongoing dry conditions, moderate to dense smoke plumes from fires in southern and central Sumatra as well as West Kalimantan continued to drift towards Singapore. “While some showers are forecast over Kalimantan, dry conditions are expected over Singapore and the surrounding region in the coming days,” the agency added.

“With prevailing winds blowing from the south-east or south, there is a continued risk of smoke haze affecting Singapore should the fires persist.”

NEA began issuing daily haze advisories on Sept 4 after the PSI reading for Singapore’s central region entered the unhealthy range.

The daily haze advisories will include the 24-hour PSI forecast, which the public can use to plan activities and events for the next 24 hours.

Sept 4 marked the first time since 2023 that the PSI reading in Singapore reached the unhealthy range because of haze.

National Environment Agency

9月6日下午6点，中部地区的24小时污染物标准指数降至87。当污染物标准指数在101至200之间时，空气质量被认为是不健康的。

《海峡时报》摄影：JASON QUAH

发布于 2026 年 9 月 6 日晚上 7:51

更新于2026年9月6日晚上7:51

新加坡——预计从9月6日下午6点开始的24小时内，空气质量将继续在中等水平的较高值和不健康水平的较低值之间波动。

国家环境局 (NEA) 在 9 月 6 日发布的公告中表示，截至当天下午 6 点，24 小时污染物标准指数 (PSI) 处于 73 至 87 的中等范围内。

根据国家环境局网站的数据，9 月 6 日下午 6 点，中部地区的 24 小时 PSI 指数降至 87，此前一晚（9 月 5 日晚上 7 点）该指数达到不健康水平，最高达到 103。

截至9月6日下午6点，北部（73）、南部（74）、东部（86）和西部（83）的读数也保持在中等范围内。

当 PSI 值在 101 到 200 之间时，空气质量被认为是不健康的，此时建议公众减少户外活动。

PSI读数在51到100之间被认为是中等的，而0到50之间的数值则属于“良好”范围。

新加坡国家环境局表示，9月6日新加坡天气晴朗，有风。

该机构补充说，由于持续干燥的天气，苏门答腊南部和中部以及西加里曼丹的火灾产生的浓烟持续向新加坡飘移。“虽然预计加里曼丹会有阵雨，但未来几天新加坡及其周边地区预计将保持干燥天气。”该机构补充道。

“由于盛行风向为东南风或南风，如果火势持续，新加坡仍将面临烟雾影响的风险。”

新加坡中部地区的空气污染指数（PSI）于9月4日进入不健康范围后，国家环境局开始每日发布雾霾预警。

每日雾霾预警将包括 24 小时 PSI 预报，公众可利用该预报来安排未来 24 小时的活动和事件。

9 月 4 日是自 2023 年以来新加坡空气污染指数 (PSI) 首次因雾霾达到不健康范围。

国家环境局