| Stations: 15 | Humidity |
| Benson (57 m) | 80 % |
| Bournemouth (10 m) | 75 % |
| Brize Norton (81 m) | 85 % |
| Farnborough (64 m) | 75 % |
| Gatwick Airport (62 m) | 90 % |
| London Biggin Hill Airport (183 m) | 95 % |
| London Heathrow Airport (25 m) | 85 % |
| London Stansted Airport (106 m) | 90 % |
| Luton Airport (160 m) | 85 % |
| Lydd Airport (3 m) | 95 % |
| Middle Wallop (91 m) | 75 % |
| Northolt (39 m) | 85 % |
| Odiham (118 m) | 80 % |
| Shoreham Airport (2 m) | 90 % |
| Southamptom AP (9 m) | 75 % |