@maxleibman @stefano runs a network of fediverse weather forecast accounts.
https://fedimeteo.com
These are not bots in the sense of automated accounts interacting with a platform's API as you would do on Twitter, or even Mastodon, rather, each account is an individual "fediverse object", to simplify a bit.
You couldn't achieve this on Twitter/X, as that's a centralized platform and requires the use of their API, nor Bluesky, as hosting the full infrastructure is too complex and expensive.