| Country | PM2.5 concentrations |
|---|---|
| Finland | 7.19 |
| Sweden | 7.96 |
| Estonia | 8.16 |
| Portugal | 8.88 |
| Spain | 10.39 |
| Ireland | 11.23 |
| Lithuania | 11.54 |
| Malta | 12.03 |
| United Kingdom | 13.08 |
| Denmark | 13.21 |
| Luxembourg | 13.97 |
| Latvia | 14.76 |
| Netherlands | 15.6 |
| Germany | 16.0 |
| Belgium | 16.9 |
| France | 16.97 |
| Austria | 18.09 |
| Greece | 18.36 |
| Romania | 18.73 |
| Italy | 21.44 |
| Slovenia | 21.77 |
| Hungary | 21.97 |
| Czech Republic | 22.86 |
| Cyprus | 22.93 |
| Slovakia | 23.19 |
| Poland | 27.72 |
| Bulgaria | 32.14 |