These air quality data sets, along with the latest updates of the related burden of disease, and corresponding frequently asked questions, are available online.

空气质量的这类成套数据连同相关疾病负担的最新情况以及相应的常见问题可在线获得。

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In many cities air pollution is reaching levels that threaten people's health according to an unprecedented compilation of air quality data released today by WHO.

根据世界卫生组织(世卫组织)今天公布的史无前例的空气质量数据汇总情况，许多城市的空气污染已达到威胁人们健康的程度。

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Air quality data have been compiled from publicly available national or city-specific sources, which are based on results of air quality monitoring conducted by individual cities.

空气质量数据是利用国家或特定城市公开可用的资料来源汇编而成的，这些资料以各城市开展的空气质量监测结果为基础。

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Although the Beijing city government has in the past tried to conceal its pollution problem by manipulating air quality data, public pressure has forced it adopt a radically more open stance.

CNN: Beijing tries to clean up its act

The U.S. Embassy in Beijing publishes AQI values for Beijing and other cities in China, and the Chinese Ministry of Environmental Protection provides its own air quality data for cities throughout the country.

FORBES: Air Quality In China

Earlier this year, Beijing started to release better air-quality data after a campaign by angry social-media users.

WSJ: Cadmium-Tainted Rice Found in Guangzhou