I’ve been using the default Apple Weather app since getting my iPhone earlier this year. It’s been fine but over the last few days it seems to be less accurate in general.
I’m in Ireland if that matters.
Edit: Updated the title to include iOS specifically
I do the same when I’m at my desk working. Sometimes I need to check the forecast, which is when a weather app is useful (e.g planning what clothing I’ll need for a cycle that will be multiple hours).