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 |
| ベリーズ | 28.41 | 27.20 | 24.75 | 22.63 | 25.02 | 23.71 | 26.87 | 26.77 | 27.56 | 25.61 | 26.18 | 26.75 | 26.15 | 28.65 |
| コスタリカ | 20.72 | 21.38 | 20.08 | 17.60 | 19.43 | 17.94 | 18.49 | 17.55 | 17.66 | 16.90 | 17.17 | 15.13 | 13.38 | 14.31 |
| ドミニカ共和国 | 17.76 | 19.07 | 18.16 | 17.54 | 17.47 | 17.65 | 17.66 | 18.94 | 19.96 | 19.25 | 19.12 | 19.59 | 19.50 | 19.83 |
| エルサルバドル | 33.25 | 32.89 | 27.70 | 23.83 | 27.56 | 24.26 | 25.80 | 23.56 | 23.94 | 22.76 | 22.11 | 21.09 | 18.27 | 20.03 |
| グアテマラ | 40.93 | 37.47 | 30.66 | 26.65 | 30.28 | 27.30 | 29.09 | 26.73 | 27.40 | 25.22 | 25.18 | 23.22 | 20.21 | 21.64 |
| ホンジュラス | 32.01 | 31.22 | 27.77 | 23.60 | 27.55 | 24.21 | 26.21 | 24.20 | 24.69 | 22.88 | 22.06 | 20.52 | 18.14 | 20.31 |
| ニカラグア | 24.94 | 25.41 | 24.42 | 20.63 | 23.01 | 20.42 | 22.19 | 20.34 | 20.81 | 19.66 | 19.20 | 17.52 | 14.98 | 16.81 |
| 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 |