Range of airborne units

I was wondering if by any chance anyone knows, what's the altitude that air robots can reach in their peak? I wanted to know how much range my weapon needs to be in order to hit them.

There's an altimeter that appears when you go airborne. Figure it out from there.

Like nova said,
Theres an Alitmeter you have.
But that doesn't restrict you from going higher.
Adone LG's break the limit,
So does air loop.


The highest you can go depends on the map too.