Is there a simple way to monitor airtime / capacity?

I understand that there will be limitations in terms of airtime / channel capacity, but is there a way to monitor this?

This would be a network architecture that is point-to-multi point so there is a controller aware of all traffic on the network.

Ultimately I want to better understand the limitations of my deployment in terms of number of devices, in my environment, therefore including retries (if any), etc.