空氣污染指數 500

本文網址︰https://mkleung.wordpress.com/2010/03/22/空氣污染指數-500/

自從香港有了「空氣污染指數」,一直聽聞最厲害都是「甚高」水平;今早起床卻聽到空氣污染指數達 200,屬「嚴重」水平,到了傍晚,大部份地區更達最高指數 500!

今年各種極端天氣都試過了,先是急速回暖及轉冷,再是相對濕度達 100%,現在再加上華北沙塵暴而導致的嚴重空氣污染指數,以及中國多個省市持續乾旱。香港這塊福地,今年可能也會遭受天災困擾。

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