Yes, but if I'm making a website supporting hundreds of different APIs with different schemas and slightly different information available isn't really practical. Local providers aren't really a substitute for a single global source of weather data.

Assuming all of those things, I agree it's not great, but if you truly need global weather information, you either pay for an API(assuming one exists, I have no idea) or afford to hire developers/dedicate time to make one for you.

I would never expect a govt to provide global weather forecasts for places outside their jurisdiction. Though now I wonder is the US govt one provides weather for the US territories and other US places outside the 50 states. I don't have time to play with that at the moment, sadly.