Instant location

Hello,

I am trying to use the widget and ist Location in the context of the corresponding post.
Gut at the moment i am failing.
I have stored the openweather-api ID to overwrite the predefined ID in the widget section. For this i tried to work with custom fields.
Question: where is the locality ID stored? And how can i overwrite the ID/City according to the coresponding post
E.g here: http://www.litrafo.com/lifestyle/sunset-ashram-auf-ibiza/
As you can see the value in the widget below already works with the coressponding locality ID set in the custom field.

Thanks for your support

https://wordpress.org/plugins/giweather/