Following an update to the Pixel Troubleshooting app/service, the Pixel 6-9 can natively show “Device temperature.” Go to Settings app > Battery > Battery diagnostics (at the bottom ...
The updated Troubleshooting app, version 1.0.693922709, is becoming available for the Pixel 6, 7, 8 and 9 series phones, though it looks like it’s being rolled out in stages.