Very weird heat issue. Why is this happening?

[TheJing]

I'm doing nothing at all on my computer and yet the temperatures have been around 80-90C for the last 15 minutes.

CPU usage is at 3%. No indexing or anything.

I'm not saying this is a problem but I am wondering if anyone knows why is happening.

 

[dlimes13]

Something is running in the background, check in Activity Monitor to see what taking up the CPU/RAM usage. Try restarting?

 

[TheJing]

CPU usage is less than 1%.

 

[Dragonforce]

Did you display all processes from all users?
There might some system stuff going on.