air pollution index API 空气污染指数
Air pollution index (API) was developed by USEPA in 1970s which was used for the daily air quality report and easy for the public to understand.
空气污染指数(API)是美国环保署于70年代研究开发的一种用于表示每日空气质量状况，并易于为大众理解的报告方法。
These agencies collect data from monitoring stations around the city and calculate an Air Pollution Index (API) indicating the potential harm to human health, with a range of 1-500.
这些机构从分布在城市中的监测站收集数据，计算出空气污染指数(Air Pollution Index, API)。该指数在1 - 500之间，数值越高就表明空气状况对人体健康的潜在危害程度越大。
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