Here's a curiosity:
At any point, there exists two places on earth exactly opposite of each other where the temperature and air pressure are exactly the same.
See, if you simply take any two spots that are opposite of each other and the temperature differs, and then rotate the spots for half a circle essentially swapping the points around, and take samples as you go, there will be a point where the samples are the same.
Suppose at point A the temperature is at x and at point B the temperature is at y, and point B is the opposite of A. If you draw a line from A to B and from B to A, since A's temperature goes from x to y and B's goes from y to x, there will be a point where the temperature is the same on the opposite ends of the globe.
Now, if you return to the starting positions of A and B, you'll see that any similar path you take will have you find a point where the temperatures are the same on opposite ends. if you find all these points and then form a line from them, and then traverse the line like earlier but this time keeping an eye on air pressure, you'll find a point where both the temperature and the air pressure are the same on the opposite points of the earth.