Tam asked in 環境其他 - 環境 · 9 years ago





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  • 9 years ago
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    香港的空氣污染指數 ( Air Pollution Index) (API)


    在1998年6月15日 空氣污染指數分為「一般空氣污染指數」和「路邊空氣污染指數」兩類。

    香港空氣污染指數分為以下5級: 級別 指數 可能對健康的影響輕微0 - 25預料沒有影響。中等26 - 50預料對公眾沒有影響。偏高51 - 100預料不會有急性的健康影響,但如果長時間在這空氣污染水平中,可能引致慢性不良影響。甚高101 - 200患有心臟或呼吸系統疾病的人的健康狀況會輕微轉壞,而一般人士或會稍感不適。嚴重201 - 500患有心臟或呼吸系統疾病的人的病徵會明顯轉壞,


    Pollutant Standards Index (PSI)

    The Pollutant Standards Index, or PSI, provides a uniform system of measuring pollution levels for the major air pollutants. It is based on a scale devised by the United States Environmental Protection Agency (USEPA) to provide a way for broadcasts and newspapers to report air quality on a daily basis.

    The PSI is reported as a number on a scale of 0 to 500 and is the air quality indicator.

    These index figures enable the public to determine whether the air pollution levels in a particular location are good, unhealthy, hazardous or worse.

    The PSI is used in a number of countries including the United States and Singapore.

    However, since 1999, the United States EPA has replaced the Pollution Standards Index (PSI) with the Air Quality Index (AQI) to incorporate new PM2.5 and ozone standards.

    2010-08-16 13:10:09 補充:

    PSI Descriptor General Health Effects

    0 - 50 Good None

    51 - 100 Moderate Few or none for the general population

    2010-08-16 13:10:45 補充:

    101 - 200---------Unhealthy---------- Mild aggravation of symptoms among susceptible

    persons i.e. those with underlying conditions such as chronic heart or lung ailments;

    transient symptoms of irritation e.g. eye irritation, sneezing or coughing in some of the

    healthy population.

    2010-08-16 13:11:52 補充:

    201 - 300-------Very Unhealthy------ Moderate aggravation of symptoms and decreased tolerance in persons with heart or lung disease; more widespread symptoms of transient irritation in the healthy population.

    2010-08-17 17:42:36 補充:


    2010-08-17 17:44:16 補充:

    301 - 400 Hazardous

    Early onset of certain diseases in addition to significant aggravation of symptoms in susceptible persons; and decreased exercise tolerance in healthy persons.

    2010-08-17 17:44:24 補充:

    Above 400 Hazardous

    PSI levels above 400 may be life-threatening to ill and elderly persons. Healthy people may experience adverse symptoms that affect normal activity.

    2010-08-17 17:53:45 補充:

    香港與新加坡的空氣污染指標是否相同 ??


    香港 : .香港的空氣污染指數 ( Air Pollution Index) (API)

    新加坡 : Pollutant Standards Index (PSI)

    此外 , 它們可用作比較。

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