fedimeteo.com is a Fediverse instance that uses the ActivityPub protocol. In other words, users at this host can communicate with people that use software like Mastodon, Pleroma, Friendica, etc. all around the world.
This server runs the snac software and there is no automatic sign-up process.
It’s already possible to follow US cities at this link: https://us.fedimeteo.com
The format is linear: for example, Fresno (California) is: @fresno__california@us.fedimeteo.com
The cities are listed alphabetically - I realize the list might not be very clear, but I’ll try to improve its readability in the coming days.
In the meantime, enjoy the forecasts!