A monitoring system for monitoring environmental conditions for rotary members includes a plurality of stationary reader antennas positioned proximate rotary members. A first sensor is coupled to a first rotary member and a second sensor is coupled to a second rotary member. Each sensor is configured to generate environmental condition data. A key phasor is coupled to a third rotary member and configured to generate key phasor data. The monitoring system also includes a data integrator communicatively coupled to each stationary reader antenna and configured to determine measurement values for the first and second environmental condition based on raw data from each stationary reader antennas and data from the key phasor.