Oh no, is not intuitive at all. It’s just that 1-100 is the most common human scale range. Celsius isn’t intuitive either.

If we wanted to be intuitive or unambiguous, we’d use Joules per square meter and bucket that by source (direct solar, radiant heat, atmospheric heat, etc.)

That’s a bit less directly applicable to “is it hot outside” than a general “temperature” unit though.