An interference control method including: receiving actual reception qualities of wireless signals that are measured by a wireless terminal, each of the wireless signals being sent from each of base stations, estimating future reception qualities after a specified period based on the actual reception qualities, estimating, for each of combinations of transmission powers of the base stations, corresponding interference based on the future reception qualities, and setting each of transmission powers of the base stations based on one of the combinations of transmission powers that is selected based on the corresponding interference.