@Alexplynch
If you don’t have the app store you don’t have the mobile app.
On browser version, on website windy.com, the app is automatically updated.
Which device are you using?
It is not possible to see humidity in the detailed forecast, but you can move the horizontal slider and the map will update to show relative humidity of the specified forecast time. Then you can move around with the weather picker and to see the actual humidity value of the specified location.
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