By using CoreTemp, you can monitor your CPU temperature whenever you want.
The uniqueness of it is that it shows the temperature of each individual core in a each processor in your system.

CoreTemp support only certain types of CPU. For a full list of supported CPUs see the CPU Support List.

It’s a freeware. Download now from here.

For more information, visit http://www.alcpu.com/CoreTemp.

My Cpu Temperature.

My Advice:
In order to prevent any damage to your computer, you must always check your cpu temperature and make sure they are not overheat. If your CPU temperature reaches 75 degrees Celsius or above, you should switch your machine off immediately and take your CPU to the nearest computer store or technical shop for repair.