We added heat index and wet bulb temperature calculations to our SHT30 library.
How hot is it really? Heat index makes an estimation using shaded air temperature and relative humidity to tell you what the temperature really feels like. High humidity makes it feel even hotter than it is, and as it turns out, there's a formula for it.
Another useful estimated calculation we added is the wet-bulb temperature. Given the air temperature and relative humidity, it is the lowest temperature air can become through evaporation. This is useful in HVAC applications using evaporative coolers. It is also part of the Wet-Bulb Globe Temperature, which is somewhat similar to the heat index.