Have you ever wondered what the formula is to determine the heat index? You might be surprised…

Heat Index = -42.379 + 2.04901523T + 10.14333127R – 0.22475541TR – 6.83783×10-3T2 – 5.481717×10-2R2 + 1.22874×10-3T2R + 8.5282×10-4TR2 – 1.99×10-6T2R2

Who knew it was that complicated? If you want a full explanation of all those variables, go here (if you dare): It’s Not the Heat, It’s the Humidity. There are a lot of assumptions built into that equation. Basically, the heat index is different for everyone. That formula is based on an average of someone who is 5’7″ and weighs 147 pounds. The equation even accounts for how much clothes coverage you have — it assumes 84% based on “long trousers and short-sleeved shirt”. Trousers? I don’t wear trousers… I’m not British!

There should be a separate heat index for the South. On the worst of days, we don’t need a number — it should just say “STAY INSIDE!”. Because there’s days where you step out the door and you’re instantly sweating. I don’t know how that’s possible, but it’s a thing. When you can feel your skin start to burn within seconds, it’s just not safe. On those days, just stay inside.