Heat index takes humidity into account. The most my city ever sees is the high 90s, but since the humidity is so high, it makes it "feel" hotter. As a result, I've seen heat indexes over 120 here. It's somewhat true to an extent. I've experienced 110+ dry, and going back to 90+ humid felt about the same. Of course, the jews are using it to push a climate narrative to scare people and that's where it's completely wrong. So while it's mostly a BS claim, it's also somewhat not BS. The truth to this is higher humidity impacts the efficiency of sweating. At the same warm temperature, the one with low humidity will be easier to manage for the body. There's also a million other factors. Most notably, the sun obviously warms you and your surroundings, but at a level higher than the temperature outside. This is because temperature is usually measured in a shaded environment. It also works the other way with cold temperatures but as the wind chill factor. More humidity makes it "feel" colder, and I think it's true, but since we rarely get cold weather here, I can't really vouch for it. I can confirm that hot weather and high humidity feels warmer and more uncomfortable, but not to the extent that the (((media))) wants you to believe.