They don't even work in California. I bought a new Pixel last summer and a few weeks later, was running around San Jose on a day that was around 95-100F (car doesn't have working AC). I left my phone on the front passenger seat in the sun for a few minutes and was getting warnings about the device overheating, apps were running terribly, and I had issues for some weeks after.
And that's in the Bay - most of my friends live outside of it, where highs of 110F aren't uncommon.