They feel very different to me. I grew up in the desert not too far from Death Valley and have been outside many times when it was ~120°F / ~10% RH. And I've ex

They feel very different to me. I grew up in the desert not too far from Death Valley and have been outside many times when it was ~120°F / ~10% RH. And I've experienced 90+°F / 90+% RH on the east coast of the US several times. Wet heat feels like it's going to wear me down until I collapse. It also feels disgusting to me - I remember leaving my hotel in Manhattan at 4 am when it was 85° and foggy. It felt bad through every one of my senses. Dry, extreme heat feels like being burned to me. It never felt like it would wear me down as fast (maybe because I grew up with it?), but it felt like my skin might dry up and slough off. And my lungs might dry up as well. I always had nose bleeds because of the dryness. I think which is worse is quite personal. But "feels like" temps or wet bulb temps don't tell the entire story. They feel completely different to me. Oh, and I only drive white cars now, even though I no longer live in the desert. My first car was a dark navy blue and that car was brutal when it was 115+°F out. It had A/C, but it couldn't keep up at all. Keeping a white towel in the car was a must because on hot summer days I couldn't touch the steering wheel without the towel if it had been sitting in the sun for any length of time (and there isn't much shade around). When getting out of the car, spread the towel across the seat to keep the seat under 140°F when you return. I didn't get much sympathy from my future wife - neither her car nor her childhood home had A/C.