Reading voltage from coil on top of Qi Wireless Charger
I am unable to get a stable voltage reading and was wondering if there was a solution to this which does not require a Qi wireless charging transceiver. 


There is not.

Qi chargers do not transmit power continuously. They use backscatter modulation to communicate with the device being charged; full power is only delivered once the device has confirmed that it is present and ready to be charged. Without a receiver in place, all you're going to see is a small amount of power that's transmitted to probe for a receiver.