I’ve been really frustrated by this app! The whole point was to give you directions between two cities along with the current weather for each stop.
The problem was, the directions API returned the Lat/Lng for each leg but the only API that would give up the data in this format was Weather Underground. They had a max-hit cap along with a per-minute cap… If I wanted more I had to pay them.
So, back to my old buddies at Yahoo! It required one extra step: I had to pass the Lat/Lng to the Yahoo! Woeid service to get the weather, but at least it’s free. :-)
I’m still working on it, but in the meantime: CityToCity
Good job.