It’s a simple interface using the data resource of OpenWeatherMap to retrieve 16 days / daily forecast data. There are three features:

1. The ellipse on top shows the humidity. It compares tomorrow with today.
2. The curve graph shows the next 16 days’ evening temperatures comparing to today’s evening temperature.
3. If there is a rainy day in the next 16 days, the raindrops will pop up in the background.

The idea comes from the truth that people are all having a feeling of today’s weather condition.
So by comparing the future’s weather data with today’s, it would give people a better sense.