According to the data from this page: http://kopf.github.io/chineseair/ Beijing ... | Hacker News

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user1713952 on Dec 6, 2013 | parent | context | favorite | on: Schoolchildren ordered indoors as air pollution cl...

According to the data from this page: http://kopf.github.io/chineseair/ Beijing seems to typically have higher pollution levels than Shanghai.

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