Assuming you already have an item that is displaying the current temperature.
You will need to store historical temperature information, so we can actually know what the temperature was 1h ago.
After you have successfully set up persistence, you need to think about how to visualize this.
Also here you have many options. But on this forum, I think Grafana is used in many (most?) cases. This is also explained in that tutorial.
Ok thanks for that there’s a lot of code and other things to get my head around there I will slowly have a read and see if I can try and get that up and running might have to leave it until I’m a little more experienced
If your looking to setup the charts like the demo, I just recently did the same here. The one missing piece that wasn’t well documented is that you need to include a Number Group item for Weather_Chart.