F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
Breezy however is not and (according to author of that fork) will not be in F-Droid repo.
You can download it form IzzyOnDroid or wait for their own F-Droid repository.
Geometric Weather has a more active fork called Breezy Weather.
Quillnote has a more active fork called Quillpad
Sexy weather app. Thanks for the follow up comment. No more ads when I want to check the weather.
Thank you
Breezy however is not and (according to author of that fork) will not be in F-Droid repo. You can download it form IzzyOnDroid or wait for their own F-Droid repository.