Detecting Fog end & start with ROBLOXs new Atmosphere class?

Hello.
I’ve started using ROBLOXs new Atmosphere class due to better visuals, but a problem that I’ve ran into is that I don’t know where that fog / atmosphere starts and ends.

I need this to add a cover, as to not see the skybox through the fog (which is the main reason for this), but also remain the same view range.

I haven’t really tried anything, but I’d assume there could possibly be a mathematical equation for this?

Any help is appreciated!