| Year | PM₂.₅ | PM₁₀ | O₃ | NO₂ |
|---|---|---|---|---|
| 2000 | 51 | 19 | 27 | |
| 2001 | 35 | 34 | 20 | |
| 2002 | 40 | 23 | 22 | |
| 2003 | 48 | 64 | 32 | |
| 2004 | 33 | 23 | 19 | |
| 2005 | 40 | 25 | 20 | |
| 2006 | 21 | 44 | 54 | 16 |
| 2007 | 12 | 35 | 23 | 19 |
| 2008 | 10 | 28 | 18 | 11 |
| 2009 | 9 | 26 | 17 | 13 |
| 2010 | 11 | 27 | 19 | 11 |
| 2011 | 15 | 33 | 18 | 11 |
| 2012 | 12 | 24 | 18 | 7 |
| 2013 | 9 | 22 | 18 | 8 |
| 2014 | 8 | 18 | 9 | 6 |
| 2015 | 7 | 23 | 36 | 8 |
| 2016 | 5 | 13 | 14 | 6 |
| 2017 | 8 | 19 | 19 | 7 |
| 2018 | 3 | 16 | 42 | 3 |
| 2019 | 0 | 11 | 25 | 3 |
| 2020 | 0 | 11 | 12 | 1 |
| 2021 | 0 | 10 | 10 | 1 |