Why does My blower fan not move a lot of air on any speed even high. on 2008 Saturn Vue

My blower fan doesn't move much air even on the high setting. The fan changes speed, but moves little air. The air that comes out is cold when A/c is on and warm when heat is on and it will come out of the different vents when switched. Does this all the time no matter the weather or temp.

Asked by for the 2008 Saturn Vue