Simple and useful service, but please add client location somewhere in the page header (in my case: Belgrade, Serbia). How can I be sure that your web application figured out right location (because of proxy servers and other factors)? EDIT: oh, someone already made this remark.
I like their graph, very detailed. I've had some other people tell me how they like to read the forecast graphs as well so maybe I'll add that in the next iteration but still try to keep it super simple... if possible.
