Do any feel-like estimates take cloud cover into consideration? It doesn't seem like it, but in a high altitude desert like NM, it is a huge factor. Furthermore, the magnitude of the effect varies depending on the day of year and time of day (how much atmosphere the sun passes through), so you can't just mentally add 10 degrees or something. And it isn't just based on the immediate conditions - if it has been cloudy all morning it will feel cooler even after the sun comes out then it will if the ground has been baking in the sun all morning. Some of that is accounted for by the air temperature (conductive heating of the air by the ground), but there is also a radiative heating effect as well. I would love an app that tried to incorporate those factors into it's "feels-like" estimate.

Just to add further color: I’m a teacher, and at my school, we use the “feels like” temperature to decide whether to send kids outside for recess. Without that metric, we’d need to either ignore the wind chill, create our own formula, or leave it up to the judgement of the individual teacher running recess that day. Much better to have a number.

thx for the perspective!