Fratton Park will undergo a pitch inspection tomorrow morning to determine whether the clash with Yeovil goes ahead.
Referee Fred Graham will inspect the pitch at 8am to decide if the surface is playable for the League One meeting.
The Blues played at home to Crawley on Boxing Day, with the turf becoming sodden and cutting up in the heavy rain.
There has already been heavy rainfall over the Christmas period, with more wet weather forecast for today and tomorrow.
A postponement would be the second this month, after the trip to Hartlepool was called off.
Pompey’s clash with Hull in February was the last home fixture postponed.