PM2.5 air pollution, mean annual exposure (micrograms per cubic meter)
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
| アルゼンチン | 18.96 | 17.43 | 16.02 | 13.93 | 14.24 | 13.36 | 14.76 | 13.95 | 14.62 | 14.27 | 13.97 | 14.19 | 14.40 | 14.91 |
| ボリビア | 82.79 | 63.07 | 58.49 | 30.58 | 27.32 | 28.07 | 26.10 | 26.94 | 27.46 | 28.05 | 26.54 | 25.17 | 24.48 | 22.88 |
| ブラジル | 15.36 | 15.57 | 15.36 | 14.93 | 15.54 | 14.60 | 13.89 | 13.79 | 12.40 | 12.11 | 12.22 | 12.25 | 12.35 | 12.18 |
| チリ | 27.02 | 28.06 | 26.19 | 22.03 | 22.87 | 21.91 | 23.76 | 23.03 | 24.28 | 24.22 | 23.41 | 23.05 | 22.73 | 23.28 |
| コロンビア | 26.47 | 25.36 | 21.15 | 19.16 | 20.55 | 18.14 | 18.93 | 18.34 | 17.61 | 17.31 | 17.25 | 16.05 | 14.52 | 14.18 |
| キューバ | 20.92 | 21.40 | 19.36 | 18.91 | 19.67 | 19.63 | 19.91 | 20.76 | 21.40 | 19.75 | 20.13 | 20.92 | 20.34 | 21.24 |
| エクアドル | 46.99 | 43.21 | 42.66 | 21.73 | 19.59 | 20.87 | 19.86 | 20.28 | 20.17 | 20.74 | 19.25 | 18.39 | 17.77 | 16.66 |
| メキシコ | 32.30 | 30.86 | 23.39 | 19.66 | 22.47 | 20.16 | 20.87 | 19.67 | 19.49 | 18.84 | 18.30 | 16.65 | 14.71 | 14.99 |
| パナマ | 18.59 | 19.08 | 17.62 | 15.13 | 15.89 | 14.68 | 15.39 | 14.86 | 14.77 | 13.87 | 13.84 | 13.21 | 11.88 | 11.47 |
| パラグアイ | 13.32 | 13.56 | 12.58 | 12.36 | 13.07 | 12.36 | 11.71 | 11.46 | 10.43 | 10.41 | 10.29 | 10.49 | 10.12 | 10.09 |
| ペルー | 80.75 | 70.04 | 67.77 | 34.71 | 32.06 | 33.90 | 32.08 | 32.92 | 32.88 | 33.74 | 32.71 | 30.63 | 29.11 | 27.04 |
| ウルグアイ | 13.27 | 12.94 | 11.52 | 10.03 | 10.05 | 9.72 | 10.83 | 10.44 | 10.47 | 10.26 | 10.06 | 10.13 | 10.30 | 10.57 |
| ベネズエラ（ボリバル共和国） | 22.84 | 23.17 | 21.57 | 20.16 | 21.69 | 19.30 | 19.96 | 19.29 | 19.30 | 18.85 | 19.08 | 16.34 | 14.85 | 15.26 |