This application is made using React library and Open Weather API.

Images of running app on a mobile device (as it is designed to use on a mobile phone)

1) On startup

2) The background changes the theme on the basis of the temperature.

3) If the current temprature at the place is 16° C or more it turns to a warmer background else to a darker background.

4) Also there is a smooth transition of 0.4s.