Bewolking — 2025
| Month | Westerlo | Olen | Difference |
|---|---|---|---|
| Jan | 78.3 % | 78.3 % | +0.0 |
| Feb | 70.4 % | 71.2 % | -0.8 |
| Mar | 40.2 % | 38.6 % | +1.6 |
| Apr | 46.3 % | 46.9 % | -0.6 |
| May | 53.2 % | 52.7 % | +0.5 |
| Jun | 50.5 % | 51.4 % | -0.9 |
| Jul | 55.5 % | 55.3 % | +0.2 |
| Aug |
| 56.8 % |
| 56.3 % |
| +0.5 |
| Sep | 61.3 % | 61.5 % | -0.2 |
| Oct | 85.2 % | 85.3 % | -0.1 |
| Nov | 77.3 % | 77.8 % | -0.5 |
| Dec | 73.8 % | 74 % | -0.2 |