This might be going a bit off topic—and I promise this post gets back to the game by the end, but for something like the weather, I don’t see Celsius as an inherently better scale.
If you think about it, Fahrenheit is just a human focused scale. 0 degrees (-18C) is really cold, 100 degrees (38 C) is really hot, at least relative the frame of reference of your average 18th century German scientist. Below 0 and above 100 are extreme, which makes it comparatively easy to reason about your own comfort in terms of the weather.
I would argue that the majority of the world’s population thinks Celsius is “better” simply for the fact that they are used to it, and everyone except the US uses it. Most people aren’t particularly concerned with the boiling or freezing point of water in their day-to-day, which is what Celsius is based upon. Obviously it’s a better way to measure things if you’re doing science stuff though.
I grew up on the US and dealt primarily with Fahrenheit, but I’ve spent a considerable amount of time abroad as an adult, so I learned to speak in Celsius, just to be able to be in the same frame of reference when talking to those around me.
It appears that most non-Americans also dislike Fahrenheit for the reason that it’s quite difficult to convert between the two; and conversely Americans are resistant to learning Celsius for a he same reason. It’s also the wrong approach. I don’t think in Fahrenheit and then convert to Celsius. It’s more like “oh it’s nice out, it must be around 20 C / 70 F” (which are not exactly the same temperature, but close enough for frame of reference)
Given that the US is such a large player in aviation, showing a small amount of love to Fahrenheit isn’t really a crazy ask, but personally it’s so, so far down on my wishlist of features for this game.
But if it was added this is how I’d love the feature to work: setting to toggle between Celsius, Fahrenheit, and Local (default). The “local” setting would show the 3 US airports in F and the rest in C. Think about it, when you are in the US, even in airports, Celsius is pretty much never used, so it’s actually a dose of realism when applied to the US airports.