Got co-ords, how to get weather?

I can get my co-ordinates but how do I get the weather? We’re given this: https://fcc-weather-api.glitch.me
but I don’t what it means or how to use it.

Help

Thanks

Thanks Randell

long & lat: aren’t I doing that in the JS section?
do I just assign all that last bit to a variable?

Thanks