Fans & Temperatures

Every temperature sensor and fan in your Mac, with manual fan control and overheat protection.

Setup

Fans & Temperatures talks to the Mac's System Management Controller through ougi, a small open-source command-line tool built from source by Homebrew.

1. Install the tool — temperatures and fan speeds work right away:

   brew install arturious/tap/ougi
   

2. To control the fans, install its root daemon once (changing fan speed requires root):

   sudo ougi daemon install
   

The extension shows these commands, with a copy button, whenever a step is missing.

Commands

• Show Fans & Temperatures — fans with speed and mode, and every temperature sensor grouped by CPU, GPU, SoC, memory, storage, battery and more. Set all fans to Auto, Max, a percentage or an exact RPM.
• Toggle Fans Auto/Max — switches all fans between automatic control and full speed. Handy on a hotkey.

Overheat protection

If fans are below max under manual control and any CPU or GPU sensor reaches 95 °C, the daemon returns the fans to macOS. Fans also return to automatic control whenever the daemon stops.

Uninstall

sudo ougi daemon uninstall
brew uninstall ougi