Surf Indicating Lamp

Looking for ideas to recreate the project, Surf Indicating Lamp. Unfortunately the author hasn't shown code or how it was done. Any help would be greatly appreciated.
I would like to have the system using WIFI to pull the data down.

I am thinking of using an Arduino Uno and creating an API to pull the data from this site:

Surf Indicating lamp

I am thinking of using an Arduino Uno and creating an API to pull the data from this site:

So, what is the problem?

If you right click on that page, and select "View Page Source", that is what you would get on the Arduino. Can you find the data that you are looking for in that?