I get emails from people trying to do weather apps all the time. But the best emails I get are from Jack and Adam at Dark Sky — these guys just get it.
They just publicly launched Forecast.io and it’s amazing. I’ve been using it for a bit and here’s my verdict on it: it’s hard not to set as your homepage.
Truly great work.
Now it is ad supported, but I honestly don’t know that there is any other workable business model for weather sites at this point.