How To Monitor Mac Temperature

If the bottom of your MacBook feels hot to the touch or the fans sound like a jet taking off, your hardware is working overtime.

While modern Apple Silicon chips are incredibly efficient, intense workloads like video rendering or gaming will still push the internal CPU temperatures high. If it gets too hot, macOS will trigger thermal throttling, intentionally slowing down your computer to prevent hardware damage.

If you want to avoid a sluggish system, you need to keep an eye on your heat levels. Here is how to monitor your Mac temperature and stop it from overheating.

The Problem with Activity Monitor

If your Mac gets hot, your first instinct is probably to open Apple's built-in Activity Monitor. It is great for showing you which apps are using CPU or RAM, but it has one massive flaw.

Activity Monitor does not display temperature data.

Apple built dozens of thermal sensors into your Mac hardware, but they do not expose that raw data in any of the default macOS utility apps. If you want to see the actual Celsius or Fahrenheit temperature of your CPU, you have to use a third-party application.

Diagnosing Heat Without a Temperature App

If you do not want to install any new apps, you can use Activity Monitor to find out why your Mac is hot, even if you cannot see the exact temperature.

1. Open Activity Monitor (Cmd + Space, type "Activity Monitor").
2. Go to the CPU tab.
3. Sort by the % CPU column.

Heat is generated by sustained high CPU usage. If a video editor or a rogue background process is stuck at 100% CPU, that is the source of the heat.

If you see a process called kernel_task using a massive amount of CPU, this is a confirmed sign of overheating. macOS uses kernel_task to intentionally block other apps from using the processor to force the system to cool down. Read our deep dive on What is kernel_task? for more details.

How to Actually Monitor Your Temperature

If you want real visibility into your hardware thermals, you need a dedicated monitoring tool.

This is exactly why we built MacStats.

MacStats is a native menu bar app that plugs directly into your Mac hardware sensors. It gives you a continuous, real-time readout of your CPU temperature right at the top of your screen. You will know exactly when your system is running cool and when it is approaching the danger zone.

But MacStats does more than just show you numbers. If your Mac gets too hot because of a weird background process, you can click it in the MacStats menu and use the AI Process Explainer. It instantly translates cryptic process names into plain English, telling you exactly what is causing the heat and if it is safe to quit.

Stop touching the bottom of your laptop to guess how hot it is. Download MacStats for Free and get real-time thermal monitoring.