To increase the security measure and better serving our YDN customers, weather data source will enforce OAuth 1 starting March 15, 2016. Please update your API calls with OAuth 1 enabled (via the OAuth /v1/yql end point if using YQL) using your Yahoo App key and secret.
For the past couple of weeks they've been changing some stuff and plugin been barely working at all, and now the locations are not being recognized.
I realize that the developer stopped working on this software but perhaps he or someone else can update the plugin or tell us how to modify the code so it would work again?
On the other hand it might be down again. Yahoo developer forums are down and weather api page doesn't even open.