I'm no super geek, not familiar with AirMesh, but I'd say the principle is the same as with an access point. You should be able to access your cameras from the Internet.
You have to do some config on your router, besides on the cameras and possibly on the airmesh. The ip address for the airmesh should be static, the cameras also should have static ip addresses instead of having it assigned by the router. Then you have to assign ports to the cameras, and open these ports on the router, so your router will allow you to access these ports ( your cameras) via the Internet. If you can view the camera feeds ( I'm taking IP cameras) from your home computer, you can view them from anywhere you can log in the Internet. Even from an iPhone or iPad or android device.
You will also have to get a dns address (for free) so instead of trying to access your router's ip address, which is probably not static, you reference it via dns.
I'd say there's an hour setup involved to get this to work...