Bewolking — 2010
| Month | Court-Saint-Étienne | Ottignies-Louvain-la-Neuve | Difference |
|---|---|---|---|
| Jan | 82 % | – | – |
| Feb | 84.1 % | – | – |
| Mar | 72.2 % | – | – |
| Apr | 52.7 % | – | – |
| May | 67.5 % | – | – |
| Jun | 58.7 % | – | – |
| Jul | 54.5 % | – | – |
| Aug | 69.1 % | – | – |
| Sep |
| 72.9 % |
| – |
| – |
| Oct | 64.3 % | – | – |
| Nov | 89 % | – | – |
| Dec | 86.9 % | – | – |