Luchtvochtigheid — 2023
| Month | Herstal | Liège | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 79.9 % | 79.9 % | +0.0 |
| Apr | 77.4 % | 77.4 % | +0.0 |
| May | 77 % | 77 % | +0.0 |
| Jun | 61.1 % | 61.1 % | +0.0 |
| Jul | 67.7 % | 67.7 % | +0.0 |
| Aug |
| 80.7 % |
| 80.7 % |
| +0.0 |
| Sep | 77.6 % | 77.6 % | +0.0 |
| Oct | 80.9 % | 80.9 % | +0.0 |
| Nov | 87.3 % | 87.3 % | +0.0 |
| Dec | 86.6 % | 86.6 % | +0.0 |