How do I get rid of “Cupertino” in the weather app on iPad?

Unlike iOS for iPhone, iPad does not [yet] have a Weather App. Perhaps you actually refer to the iPadOS Weather Widget…

Touch-and-hold the Weather Widget - and a menu will appear. Tap the Edit Widget button - and then Location. Either select a city close to you - or choose My Location.

Hi NoPersonalInformationHere,

We understand you're looking to remove a city in the Weather App. Take a look at the section in this article for "Add, delete, and rearrange locations in your weather list" to complete the task.

Check the weather on iPhone

Have a nice day