The fastest way to check your CPU temperature

Windows 10 does not include a built-in tool to read processor temperature directly. Your best option is to download a free third-party program — HWiNFO or Core Temp are the most straightforward choices. Both show your current CPU temperature in real time, take less than a minute to install, and work on any Windows 10 machine.

If you want to avoid downloading anything, you can check temperature through the BIOS (the firmware that runs before Windows starts), but this requires restarting your computer and is slower than using software. Most people find the software route easier.

Key Takeaways

  • HWiNFO and Core Temp are free programs that display your processor temperature immediately after installation.
  • Your CPU temperature should stay below 80°C during normal use and below 90°C during heavy tasks like gaming or video editing.
  • If your processor regularly runs above 90°C, check that your cooling fan is spinning and that dust is not blocking your computer's vents.
  • You can also check temperature through your BIOS by restarting and pressing Delete or F2 during startup, though this is slower than using software.

Installing and using HWiNFO

Go to hwinfo.com, click the download button, and choose the installer version (not the portable version). Run the installer and accept the default settings. When it opens, look for the section labeled CPU or Processor — you will see a line that says Package or Core Max. That number is your processor temperature in Celsius.

HWiNFO shows temperatures for each individual core in your CPU as well as the overall package temperature. The package temperature is what matters most — that is the heat your cooling system is actually dealing with. Leave HWiNFO running in the background if you want to monitor temperature while you work or play.

If the numbers seem very high (above 100°C) or very low (below 20°C), restart your computer and check again. Sometimes the first reading is inaccurate.

Installing and using Core Temp

Go to alcpu.com/CoreTemp, download the installer, and run it. Core Temp is simpler than HWiNFO — when it opens, you see one main temperature reading at the top of the window. That is your processor temperature. The smaller numbers below show the temperature of each individual core.

Core Temp also includes a small widget you can leave on your desktop or in your system tray (the icons in the bottom right corner of your screen). This lets you glance at your temperature without opening the full program. Right-click the program window and look for Settings to turn on the tray icon.

What temperature is normal

Your processor temperature depends on what your computer is doing. When you are browsing the web or working in documents, your CPU should run between 30°C and 50°C. During heavier tasks — gaming, video editing, or running multiple programs at once — temperatures between 60°C and 80°C are normal.

Temperatures above 90°C mean your cooling system is struggling. If this happens regularly, your computer may throttle (slow itself down) to avoid overheating, which makes programs run slower. Temperatures above 100°C can damage your processor over time.

Keep in mind that room temperature affects these numbers. If your room is very warm, your CPU will run warmer even when doing the same work. The numbers above are rough guidelines, not exact thresholds.

Why your processor might run hot

The most common cause is dust blocking your computer's air vents or cooling fan. Open your computer case (if you are comfortable doing so) and look for dust buildup around the fan and heatsink — the metal fins attached to your CPU. You can gently blow out dust with compressed air, which you can buy at any office supply store.

The second common cause is that your CPU cooler is not making good contact with the processor. This usually happens if your computer is old or if the cooler was not installed correctly. If you are not comfortable opening your computer, a repair shop can check this for you.

Thermal paste — the gray compound between your CPU and cooler — can dry out over several years. If your computer is more than five years old and running hot, the paste may need replacing. Again, this is something a repair shop can handle.

Checking temperature through BIOS

If you prefer not to install software, you can restart your computer and enter the BIOS to read temperature. Shut down completely, then turn the computer back on. As soon as it starts, press Delete or F2 repeatedly (before Windows loads). You should see a blue or black screen with white text — that is the BIOS.

Look for a section called Hardware Monitor, PC Health, or System Information. Inside that section, you should see CPU temperature listed. The exact location varies by computer manufacturer, so you may need to explore the menus.

This method is slower because you have to restart your computer each time you want to check temperature. Most people use software instead.

When to worry about temperature

A single high reading is not a problem — your CPU temperature naturally spikes when you open a heavy program. What matters is whether your temperature stays high over time. If you are doing light work and your CPU is consistently above 70°C, or if it reaches 95°C during normal gaming, something is wrong with your cooling.

Use HWiNFO or Core Temp to watch your temperature for a few minutes while you work. If it climbs steadily and does not come back down, shut down and check for dust. If the temperature is normal after cleaning, you are done. If it is still high, your cooler may need professional attention.

Frequently Asked Questions

Is it safe to run my CPU at 85°C?

Yes, 85°C is within the safe range for most processors during heavy use. Modern CPUs are designed to handle temperatures up to 95°C or higher without damage. However, running consistently at 85°C means your cooling system is working hard, so check for dust and make sure your fan is spinning normally.

Why does my temperature jump around so much?

Temperature changes quickly because your CPU speeds up and slows down based on what you are doing. When you open a program, the CPU works harder and heats up. When the program finishes, the CPU slows down and cools off. Jumps of 10 to 20 degrees in a few seconds are normal.

Can I lower my CPU temperature without opening my computer?

Yes — make sure your computer's vents are not blocked by dust or objects, and keep your room temperature reasonable. You can also close unnecessary programs running in the background. If these steps do not help, you will need to clean inside your computer or have a technician check your cooling system.

Do I need to check my CPU temperature regularly?

Only if you are experiencing slowdowns, hearing your fan run constantly, or your computer feels hot to the touch. If your computer runs normally and quietly, your temperature is fine. Check once if you are curious, then check again only if something changes.

What if HWiNFO or Core Temp shows 0°C or an error?

Restart your computer and try again. Sometimes the program cannot read the sensor on the first try. If it still shows an error, your computer may not have a temperature sensor, or the sensor is not compatible with that software. Try the other program instead.