Air quality to remain in moderate to low unhealthy range on Tuesday: NEA

NEA said that moderate to dense smoke plumes from fires in southern and central Sumatra, as well as West Kalimantan, continued to drift towards Singapore.

A view from Bishan Ridges during the afternoon of Sep 4, 2026. (Photo: CNA/Marcus Mark Ramos)

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SINGAPORE: Air quality across Singapore remained in the moderate range on Monday (Sep 7), with the National Environment Agency (NEA) forecasting the 24-hour Pollutant Standards Index (PSI) for Tuesday to be in the moderate to low unhealthy range.

The 24-hour PSI was between 63 and 85 as at 6pm on Monday.

In its health advisory, NEA said that if the air quality for the next day is moderate, all groups - healthy individuals, the elderly, pregnant women, children and those with chronic lung and heart disease - can continue with normal activities.

If the air quality is unhealthy, healthy individuals should reduce prolonged or strenuous outdoor physical exertion.

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 The elderly, pregnant women and children should minimise such activities, while those with chronic lung and heart disease should avoid them altogether, said NEA. On Monday, NEA said that moderate to dense smoke plumes from fires in southern and central Sumatra, as well as West Kalimantan, continued to drift towards Singapore. "Some showers are expected over parts of Kalimantan in the coming days. However, dry conditions are expected to persist over Singapore and southern and central Sumatra. If the fires continue, there remains a risk of smoke haze affecting Singapore." NEA added that the health impact of haze is dependent on one's health status, the PSI level, and the length and intensity of outdoor activity. It advised the public to check the 1-hour PM2.5 concentration readings for immediate outdoor activities, and use the 24-hour PSI forecast and its corresponding health advisories to plan next-day outdoor activities. NEA began issuing daily haze advisories on Sep 4 after the 24-hour PSI in the central region crossed into the unhealthy band of 101 to 200 at 7am, marking the first time the PSI had breached the level since Oct 8, 2023. Air quality deteriorated steadily throughout the day, with the central, eastern and western regions all recording unhealthy PSI levels by midnight.

The elderly, pregnant women and children should minimise such activities, while those with chronic lung and heart disease should avoid them altogether, said NEA.

On Monday, NEA said that moderate to dense smoke plumes from fires in southern and central Sumatra, as well as West Kalimantan, continued to drift towards Singapore.

"Some showers are expected over parts of Kalimantan in the coming days. However, dry conditions are expected to persist over Singapore and southern and central Sumatra. If the fires continue, there remains a risk of smoke haze affecting Singapore."

NEA added that the health impact of haze is dependent on one's health status, the PSI level, and the length and intensity of outdoor activity.

It advised the public to check the 1-hour PM2.5 concentration readings for immediate outdoor activities, and use the 24-hour PSI forecast and its corresponding health advisories to plan next-day outdoor activities.

NEA began issuing daily haze advisories on Sep 4 after the 24-hour PSI in the central region crossed into the unhealthy band of 101 to 200 at 7am, marking the first time the PSI had breached the level since Oct 8, 2023. Air quality deteriorated steadily throughout the day, with the central, eastern and western regions all recording unhealthy PSI levels by midnight.

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.

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.

While the 24-hour PSI is an average of the past 24 hours, the one-hour PM2.5 reading reflects the air quality at a single point in time.

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

In an earlier joint media release issued on behalf of agencies in the Haze Task Force (HTF), NEA said those in the task force have implemented their respective action plans and advisories to protect public health and well-being.

NEA's daily haze advisories will include the 24-hour PSI forecast, which can be used by the public to plan their activities and events for the next 24 hours.

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新加坡国家环境局表示，苏门答腊南部和中部以及西加里曼丹的火灾产生的中等至浓重的烟雾继续向新加坡飘来。

2026年9月4日下午，从碧山山脊眺望的景色。（图片：CNA/Marcus Mark Ramos）

这段音频由人工智能工具生成。

新加坡：周一（9月7日），新加坡各地空气质量仍处于中等水平。国家环境局（NEA）预测，周二的24小时污染物标准指数（PSI）将处于中等至低度不健康水平。

截至周一下午 6 点，24 小时 PSI 值在 63 至 85 之间。

新加坡国家环境局在其健康公告中表示，如果第二天的空气质量为中等，所有人群——健康人士、老年人、孕妇、儿童以及患有慢性肺病和心脏病的人——都可以继续进行正常的活动。

如果空气质量不健康，健康人群应减少长时间或剧烈的户外体力活动。

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 新加坡国家环境局（NEA）表示，老年人、孕妇和儿童应尽量减少此类活动，而患有慢性肺病和心脏病的人则应完全避免此类活动。周一，NEA表示，来自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来。“预计未来几天加里曼丹部分地区会有阵雨。然而，预计新加坡以及苏门答腊南部和中部将持续干燥。如果火灾持续，新加坡仍有可能受到烟霾的影响。” NEA补充说，烟霾对健康的影响取决于个人的健康状况、空气污染指数（PSI）以及户外活动的持续时间和强度。国家环境局建议公众查看1小时PM2.5浓度读数，以便进行户外活动，并参考24小时空气污染指数（PSI）预报及其相应的健康建议，规划次日的户外活动。9月4日，中部地区24小时PSI于早上7点突破101至200的不健康区间，这是自2023年10月8日以来PSI首次突破该区间，之后国家环境局开始每日发布雾霾预警。空气质量全天持续恶化，到午夜时分，中部、东部和西部地区的PSI均已达到不健康水平。

国家环境局表示，老年人、孕妇和儿童应尽量减少此类活动，而患有慢性肺病和心脏病的人则应完全避免此类活动。

周一，新加坡国家环境局表示，苏门答腊南部和中部以及西加里曼丹的火灾产生的中等至浓烟继续向新加坡飘移。

“未来几天，加里曼丹部分地区预计会有阵雨。但新加坡以及苏门答腊南部和中部地区预计仍将保持干燥天气。如果火势持续，新加坡仍有可能受到烟霾影响。”

新加坡国家环境局补充说，雾霾对健康的影响取决于个人的健康状况、空气污染指数（PSI）水平以及户外活动的持续时间和强度。

它建议公众查看 1 小时 PM2.5 浓度读数，以便进行即时的户外活动，并使用 24 小时 PSI 预报及其相应的健康建议来计划第二天的户外活动。

9月4日，新加坡国家环境局（NEA）开始每日发布雾霾预警。当天上午7点，中部地区的24小时空气污染指数（PSI）突破101至200的不健康范围，这是自2023年10月8日以来PSI首次突破该水平。空气质量在当天持续恶化，到午夜时分，中部、东部和西部地区的PSI均已达到不健康水平。

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。该指数由六种空气污染物计算得出，分别是：PM2.5、PM10、臭氧、二氧化硫、二氧化氮和一氧化碳。

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 是过去 24 小时的平均值，而 1 小时 PM2.5 读数反映的是某一时刻的空气质量。

24 小时 PSI 读数在 201-300 范围内被认为是“非常不健康的”，超过 300 则被认为是“危险的”。

国家环境局 (NEA) 早前代表雾霾工作组 (HTF) 各机构联合发布的新闻稿中表示，工作组成员已落实各自的行动计划和建议，以保护公众健康和福祉。

新加坡国家环境局每日发布的雾霾预警将包含 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。

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