as the title says, the app that you can find annexed is just another weather forecast.
Many weather forecast apps that you can find on the web are full of adv, and this was ennoying me a lot.
Then, I've decided to develop a weather forecast on my own, by using AI2.
In this development I've played with lists (viewers and pickers), dictionaries, files, web operations, JSON files and extensions (many thanks to @Taifun, @Gordon_Lu, @VSATISH13).
The annexed .pdf contains some notes on its characteristics and a sort of user manual: one can find more details therein,
In a nutshell: you can try the app, dig the code, read the document, or better, do something else, more interesting...