The fastest way to check CPU temperature depends on your operating system

On Windows, open Task Manager (Ctrl+Shift+Esc), go to the Performance tab, and click CPU — the temperature appears in the top right corner if your hardware supports it. On Mac, download Macs Fan Control or Intel Power Gadget, both free, since macOS does not show CPU temperature in built-in tools. On Linux, open a terminal and run sensors if it is installed, or install it with your package manager first.

If your system does not show temperature in these places, your motherboard or processor may not have a temperature sensor, or the sensor data is not exposed to the operating system. This is common on older hardware or some budget motherboards.

Key Takeaways

  • Windows Task Manager shows CPU temperature directly in the Performance tab under the CPU section, with no additional software needed.
  • Mac users need third-party software like Macs Fan Control or Intel Power Gadget because Apple does not include temperature monitoring in System Information.
  • Linux users can check temperature with the sensors command in a terminal, which reads data from hardware monitoring chips.
  • Normal CPU temperature ranges from 30°C to 60°C at idle and up to 80°C to 90°C under heavy load, depending on your processor model.
  • If you see no temperature data, your motherboard may lack a temperature sensor or the sensor is not connected to your operating system.

Windows: Using Task Manager

Task Manager is the simplest route on Windows 10 and Windows 11. Press Ctrl+Shift+Esc to open it directly, or right-click the taskbar and select Task Manager. Click the Performance tab at the top, then select CPU from the left sidebar. The temperature appears in the top right corner of the window, labeled as a number in degrees Celsius.

This feature works on most modern Windows machines with Intel or AMD processors made in the last ten years. If you do not see a temperature reading, your motherboard may not have a temperature sensor connected, or Windows cannot access the sensor data. In that case, move to a third-party tool like HWiNFO or Core Temp.

Windows: Using third-party monitoring tools

If Task Manager does not show temperature, download HWiNFO (free) or Core Temp (free). Both run in the background and display CPU temperature in a small window or system tray icon. HWiNFO shows more detail — it lists individual core temperatures and other hardware data — while Core Temp is simpler and lighter on system resources.

Install either tool, launch it, and look for the CPU temperature reading. Both tools work on Windows 7 through Windows 11. They also log temperature history, which is useful if you want to see how hot your CPU gets during specific tasks or over time.

Mac: Using Macs Fan Control or Intel Power Gadget

macOS does not include CPU temperature in System Information or Activity Monitor, so you need a third-party tool. Macs Fan Control (free) works on Intel and Apple Silicon Macs and shows CPU temperature, GPU temperature, and fan speed. Intel Power Gadget (free, Intel Macs only) displays CPU temperature and power usage in real time.

Download Macs Fan Control from the App Store or the developer's website, install it, and open it — the temperature appears immediately. If you have an Intel Mac, Intel Power Gadget is another option, though it is less frequently updated. Both tools sit in the menu bar so you can check temperature without opening a window.

Linux: Using the sensors command

On Linux, open a terminal and type sensors. If the command works, you will see CPU temperature and other thermal data. If you get a "command not found" error, install the lm-sensors package first. On Ubuntu or Debian, run sudo apt install lm-sensors. On Fedora or RHEL, run sudo dnf install lm-sensors. On Arch, run sudo pacman -S lm-sensors.

After installing, run sudo sensors-detect once to find your hardware sensors, then use sensors to view the data. The output shows temperature for each CPU core and other components. If sensors still shows no data, your motherboard may not have a temperature sensor connected to the system.

Understanding normal CPU temperature ranges

A healthy CPU temperature at idle (when you are not running demanding programs) is between 30°C and 50°C. Under heavy load — during gaming, video rendering, or compilation — temperatures between 70°C and 85°C are normal. Most modern processors throttle performance automatically if they reach 95°C to 100°C to prevent damage.

Temperature varies by processor model, cooling solution, and room temperature. A laptop CPU typically runs hotter than a desktop CPU because laptops have less cooling space. If your CPU consistently stays above 85°C during normal use, check that your heatsink is clean, thermal paste is not dried out, or fans are spinning. Dust buildup is the most common cause of high temperatures.

What to do if temperature is too high

If your CPU temperature exceeds 90°C during normal tasks, shut down and clean the heatsink and fan with compressed air. Dust blocks airflow and causes heat buildup. If cleaning does not help, the thermal paste between the CPU and heatsink may have dried out — removing and reapplying thermal paste is a more involved fix but often solves the problem.

On laptops, use a laptop cooling pad (a fan-equipped stand that sits under the machine) to improve airflow. Check that your room temperature is not unusually hot. If temperature is still high after these steps, the heatsink may be loose or the fan may be failing — both require opening the case or taking the machine to a technician.

Frequently Asked Questions

Why does my CPU temperature vary so much throughout the day?

CPU temperature changes based on what you are running. Idle tasks use little power and generate little heat, so temperature drops. Opening a web browser with many tabs, playing a game, or running a video call increases load and temperature. Room temperature also affects it — a warmer room means higher CPU temperature even at the same workload.

Is 80°C safe for my CPU?

Yes, 80°C is safe under load. Most processors are designed to run safely up to 95°C to 100°C. Sustained temperatures above 90°C over weeks or months may shorten the lifespan of the CPU, but occasional spikes to 80°C or 85°C during gaming or heavy work are normal and not harmful.

Can I check CPU temperature on a Chromebook?

Chromebooks do not expose CPU temperature to users through any built-in tool or third-party app. Chrome OS does not provide access to hardware sensors the way Windows, Mac, and Linux do. If you need temperature data, you would have to switch to a different operating system.

What if my CPU temperature sensor is broken?

If the sensor is broken, you cannot read temperature at all — no tool will show data. A broken sensor does not affect CPU performance or safety; the processor still has built-in thermal protection that throttles performance if it overheats. You simply lose the ability to monitor temperature. A technician can test the sensor or replace the motherboard if needed.

Does checking CPU temperature slow down my computer?

No. Reading temperature data uses almost no CPU power or memory. Tools like HWiNFO and Core Temp run in the background with minimal impact. Task Manager and the sensors command are even lighter. Checking temperature does not slow your machine.