What are some good non-IoT integrations, similar to OpenWeatherMap, etc?

Third party integrations
1

I use OpenWeatherMap to view a weather widget, but what other 3rd party integrations are out there that you find helpful? Specifically, ones that don’t connect to a device in your home, but a 3rd party on the internet? What are some along these lines that you find useful? Thanks.

2

If you are in the US you can use NWS (National Weather Service)