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Annual average PM2.5 concentrations 2008–2015, Chinese cities with US Mission monitoring.
| Year | Beijing | Shanghai | Chengdu | Guangzhou | Shenyang |
|---|---|---|---|---|---|
| 2008 | 85 | ||||
| 2009 | 102 | ||||
| 2010 | 104 | ||||
| 2011 | 99 | ||||
| 2012 | 91 | 51 | 85 | 58 | |
| 2013 | 102 | 60 | 97 | 55 | 67 |
| 2014 | 98 | 50 | 82 | 50 | 78 |
| 2015 | 83 | 51 | 77 | 40 | 80 |
