https://www.cnet.com/news/climate-change-ar-exhibit-in-times-square-gets-too-hot-for-hololens/

Next, I'm wearing a Microsoft HoloLens on my head, seeing the floating boats semivisible in a haze of bright sunlight and my own sweat. I try to crane my neck at the holographic effect, as representatives from Microsoft try to keep me in the shade. There's a reason why: my demo suddenly ends midway, going dark. The HoloLens has overheated.

Times Square in the summer is an awful place to experiment with augmented reality.