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。

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For example, Nokia have put forward an idea to attach sensors to phones that could report back on air quality.

举个例子，诺基亚的一个提出一个方案，利用手机上的传感器收集空气质量的报告。

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Now a European company called Sensaris is using Bluetooth wireless sensors, used in combination with mobile phones, that allow citizens to monitor and report air and sound quality data.

现在欧洲一家名叫Sensaris的公司使用蓝牙的无线传感器，并结合移动电话，让公众监视并汇报噪音和空气质量的数据。

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The high levels of Sizewell C traffic would result in increased journey times, a higher accident rate and poorer air quality, the report said.

BBC: Suffolk County Council report calls for villages bypass

The report found that 22 of the 25 most ozone-polluted cities improved their air quality in the past year.

FORBES: How Clean is the Air? Your iPhone Now Has the Answer

The report's findings mean that the District Council will have to designate a formal Air Quality Management Area.

BBC: NEWS | UK | England | Devon | Town's air quality causes concern