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 |
| الجزائر | 22.36 | 28.23 | 26.71 | 24.40 | 23.57 | 24.40 | 22.38 | 24.11 | 25.62 | 25.55 | 24.75 | 24.93 | 24.39 | 25.55 |
| ليبيا | 32.82 | 35.97 | 42.51 | 50.11 | 36.57 | 33.04 | 41.83 | 36.29 | 36.09 | 38.17 | 33.69 | 41.42 | 36.48 | 32.97 |
| المغرب | 20.51 | 26.28 | 26.47 | 27.03 | 25.10 | 23.52 | 22.63 | 22.58 | 25.65 | 24.75 | 28.02 | 23.19 | 20.93 | 21.32 |
| تونس | 22.25 | 27.47 | 24.66 | 27.15 | 23.80 | 22.69 | 22.14 | 25.16 | 23.63 | 24.81 | 22.57 | 25.52 | 23.77 | 24.18 |
| موريتانيا | 78.56 | 85.10 | 72.30 | 72.92 | 72.99 | 83.04 | 64.51 | 64.15 | 83.03 | 76.55 | 79.97 | 75.83 | 72.20 | 70.82 |