Keeping tabs on the operating temperature of a Raspberry Pi is important since it can be affected by so many factors. Ambient temperature, processor load, overclocking, heatsinks, fans, etc. can all contribute to measurable changes. Following the link below, you will see how to monitor RPi temperature using JEDI One. You can then capture that data, display it, and take action should it go out of bounds (using rules and actions). Thanks to Digi-Key for putting this together.