Air quality across Singapore remains in unhealthy range

Under prevailing southeasterly to southerly winds, smoke haze from central and southern Sumatra and many parts of Kalimantan may continue to drift towards Singapore, NEA said.

Haze conditions from the Upper Cross Street area overlooking Bras Basah Road on Oct 7, 2026. (Photo: CNA/Raydza Rahman)

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SINGAPORE: Air quality across all five regions of Singapore remained in the unhealthy range on Thursday (Oct 8), with the west recording a 24-hour Pollutant Standards Index (PSI) reading of 161 at 6am.

The 24-hour PSI readings entered the unhealthy range across Singapore at noon on Wednesday and remained there overnight into Thursday morning.

As of 6am, the 24-hour PSI was 147 in central Singapore, 128 in the east, 120 in the south and 113 in the north.

The 1-hour PM2.5 readings were in the elevated band in central and western Singapore, while readings in the north, south and east were in the normal band.

CNA Games Guess Word Crack the word, one row at a time Buzzword Create words using the given letters Mini Sudoku Tiny puzzle, mighty brain teaser Mini Crossword Small grid, big challenge Word Search Spot as many words as you can Show More Show Less On Wednesday, the 1-hour PM2.5 reading in the west rose to 152 at 4pm, entering the "high" band for the first time this haze season, before falling back into the elevated band an hour later. In an advisory on Wednesday evening, the National Environment Agency (NEA) said moderate to dense smoke plumes from southern Sumatra were observed drifting towards Singapore. Moderate to dense smoke haze was also observed from hotspots in Kalimantan. Dry conditions are expected to continue over central and southern Sumatra and many parts of Kalimantan. Under the prevailing southeasterly to southerly winds, smoke haze from these areas may continue to drift towards Singapore, NEA said. The 24-hour PSI for Singapore is forecast to be in the unhealthy range.

On Wednesday, the 1-hour PM2.5 reading in the west rose to 152 at 4pm, entering the "high" band for the first time this haze season, before falling back into the elevated band an hour later.

In an advisory on Wednesday evening, the National Environment Agency (NEA) said moderate to dense smoke plumes from southern Sumatra were observed drifting towards Singapore. Moderate to dense smoke haze was also observed from hotspots in Kalimantan.

Dry conditions are expected to continue over central and southern Sumatra and many parts of Kalimantan. Under the prevailing southeasterly to southerly winds, smoke haze from these areas may continue to drift towards Singapore, NEA said.

The 24-hour PSI for Singapore is forecast to be in the unhealthy range.

When planning outdoor activities for the next 24 hours, the public is advised to use the 24-hour PSI forecast and health advisories.

When 1-hour PM2.5 levels are elevated, healthy people are advised to reduce strenuous outdoor activity for the next hour, while the elderly, pregnant women, children and people with chronic heart or lung conditions should avoid such activity.

The 24-hour PSI is Singapore's indicator of daily air quality and forms the basis of NEA's daily health advisories. It is calculated using six air pollutants - PM2.5, PM10, ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide - and reflects the average air quality of the past 24 hours.

The 1-hour PM2.5 reading, on the other hand, is the hourly average of the PM2.5 pollutant levels. PM2.5 is fine particulate matter with a diameter of 2.5 micrometres or shorter, and is the dominant pollutant during haze that causes harm to health.

A 24-hour PSI reading is considered "unhealthy" when it is in the 101 to 200 range, "very unhealthy" when it is within the 201-300 range and "hazardous" when it goes over 300.

The hourly PM2.5 reading is classified in four bands: normal, elevated, high and very high. It is considered elevated when it ranges from 56 to 150. The "high" band ranges from 151 to 250, and readings above that are classified as "very high".

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新加坡国家环境局表示，在盛行的东南风至南风的影响下，苏门答腊中部和南部以及加里曼丹许多地区的烟霾可能会继续向新加坡飘移。

2026年10月7日，从上十字街一带俯瞰勿拉士峇沙路的雾霾情况。（图片：CNA/Raydza Rahman）

这段音频由人工智能工具生成。

新加坡：周四（10 月 8 日），新加坡所有五个地区的空气质量仍处于不健康范围，西部地区早上 6 点的 24 小时污染物标准指数 (PSI) 读数为 161。

周三中午，新加坡全境24小时空气污染指数（PSI）读数进入不健康范围，并持续到周四早上。

截至早上 6 点，新加坡中部 24 小时 PSI 指数为 147，东部为 128，南部为 120，北部为 113。

新加坡中部和西部地区的 1 小时 PM2.5 读数处于较高水平，而北部、南部和东部地区的读数处于正常水平。

CNA游戏 猜词游戏 逐行破解单词 流行词游戏 用给定的字母组成单词 迷你数独 小谜题，脑力挑战 迷你填字游戏 小方格，大挑战 单词搜索 尽可能多地找出单词 显示更多 显示更少 周三下午4点，新加坡西部PM2.5 1小时读数升至152，这是本雾霾季首次进入“高”浓度区间，一小时后回落至“中”浓度区间。新加坡国家环境局（NEA）周三晚间发布公告称，观测到来自苏门答腊南部的中度至重度烟雾正向新加坡飘移。加里曼丹岛热点地区也观测到中度至重度烟雾。预计苏门答腊中部和南部以及加里曼丹岛大部分地区将持续干燥。NEA表示，在盛行的东南风至南风的影响下，这些地区的烟雾可能会继续向新加坡飘移。新加坡24小时空气污染指数（PSI）预计将处于不健康范围。

周三下午 4 点，西部地区的 1 小时 PM2.5 读数升至 152，这是本雾霾季首次进入“高”水平，一小时后又回落到“中”水平。

新加坡国家环境局（NEA）周三晚间发布公告称，苏门答腊南部地区出现中度至重度烟雾，并正向新加坡方向飘移。加里曼丹部分地区也出现中度至重度烟雾。

预计苏门答腊中部和南部以及加里曼丹大部分地区将持续干燥。新加坡国家环境局表示，在盛行的东南风至南风的影响下，这些地区的烟雾可能会继续向新加坡飘移。

预计新加坡24小时空气污染指数（PSI）将处于不健康范围。

建议公众在计划未来 24 小时的户外活动时，参考 24 小时 PSI 预报和健康建议。

当 1 小时 PM2.5 水平升高时，建议健康人群在接下来的一个小时内减少剧烈的户外活动，而老年人、孕妇、儿童以及患有慢性心脏或肺部疾病的人应避免此类活动。

24小时空气污染指数（PSI）是新加坡衡量每日空气质量的指标，也是国家环境局（NEA）每日健康建议的基础。它使用六种空气污染物——PM2.5、PM10、臭氧、二氧化硫、二氧化氮和一氧化碳——计算得出，反映了过去24小时的平均空气质量。

另一方面，1 小时 PM2.5 读数是 PM2.5 污染物浓度的小时平均值。PM2.5 是直径为 2.5 微米或更短的细颗粒物，是雾霾期间造成健康危害的主要污染物。

24 小时 PSI 读数在 101 到 200 范围内被认为是“不健康的”，在 201 到 300 范围内被认为是“非常不健康的”，超过 300 时被认为是“危险的”。

PM2.5 每小时读数分为四个等级：正常、偏高、高和非常高。当读数在 56 至 150 之间时，被视为偏高；“高”等级的范围为 151 至 250；高于此范围的读数则被归类为“非常高”。

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