A couple of immediate findings visiting forecast.io on my phone just now:
1. It defaults to my ISP's location 400 miles away in London, which is understandable but doesn't give me an obvious way to correct it. Can't select my city shown on the map or enter coordinates.
2. Despite guessing that I am in the UK it defaults its temperatures to Fahrenheit, which is utterly alien to Europeans.
There's a big blue bar at the top of the screen which contains an input field you can use to search for a different location. It starts out saying "Current Location", but you can adjust it. There's also a units switcher in the top right of the page.
Disclaimer: I visited forecast.io on my phone for the first time in years to check this. I may have missed subtleties of it not working.
1. It defaults to my ISP's location 400 miles away in London, which is understandable but doesn't give me an obvious way to correct it. Can't select my city shown on the map or enter coordinates.
2. Despite guessing that I am in the UK it defaults its temperatures to Fahrenheit, which is utterly alien to Europeans.
10 mins later: still stuck on London.