Air quality across Singapore no longer within unhealthy range

Hazy conditions seen from Marina Bay Financial Centre Tower 1 at 12pm on Sept 2.

ST PHOTO: LIM YAOHUI

Published Sep 05, 2026, 09:10 PM

Updated Sep 05, 2026, 09:10 PM

Air quality in Singapore has improved, with the PSI in all five regions now in the moderate range.

The central region's PSI dropped from an unhealthy 123 to 98 by 9pm on September 5.

September 4 was the first day in 2023 that Singapore's PSI reached unhealthy levels due to haze.

SINGAPORE – The air quality across Singapore has improved, with the PSI across all five regions of the country now falling within the moderate range.

The 24-hour Pollutant Standards Index (PSI) for the central region, which had reached unhealthy levels the previous night with a high of 123, dipped to 98 at 9pm on Sept 5.

Readings in the north (77), south (77), east (80) and west (90) also remained in the moderate range.

The PSI readings in the east and west regions returned to moderate levels on the morning of Sept 5, after also previously reaching unhealthy levels.

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

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

9月2日中午12点，从滨海湾金融中心1号楼看到的雾霾天气。

ST 照片：林耀辉

发布于2026年9月5日晚上9:10

更新于2026年9月5日晚上9:10

新加坡的空气质量有所改善，五个区域的空气污染指数（PSI）均已达到中等水平。

9 月 5 日晚上 9 点，中部地区的 PSI 指数从不健康的 123 降至 98。

2023 年 9 月 4 日是新加坡空气污染指数 (PSI) 因雾霾达到不健康水平的第一天。

新加坡——新加坡的空气质量有所改善，全国五个地区的空气污染指数（PSI）均已降至中等水平。

中部地区的 24 小时污染物标准指数 (PSI) 前一晚曾达到不健康水平，最高达到 123，9 月 5 日晚上 9 点降至 98。

北部（77）、南部（77）、东部（80）和西部（90）的读数也保持在中等范围内。

9月5日上午，东部和西部地区的空气污染指数（PSI）读数恢复到中等水平，此前这些地区的空气污染指数也曾达到不健康水平。

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。

9 月 4 日是新加坡自 2023 年以来首次因雾霾导致空气污染指数 (PSI) 达到不健康范围。