In 2016, Chengdu averaged about three times the 24-hour limit of 25 micrograms. Bad days can easily go to 10 times that level. Compared to former years, Chengdu’s air quality has not been much better in 2016.
Click here to see the original article: https://smartairfilters.com/en/blog/chengdu-pollution-bad-as-beijing/
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