The 'Access-Control-Allow-Origin' header has a value 'http://www.wunderground.com' that is not equal to the supplied origin. Origin 'http://localhost:8100' is therefore not allowed access

[jhaankit]

Http post Request error *No access control origin * in ionic

You could use chrome extension https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi?hl=en to deal with CORS. Though, you will not face CORS issue in mobile applications.