The chart above was made from information in a new Public Policy Polling survey -- done on January 23rd and 24th of a random national sample of 1,043 registered voters, with a margin of error of 3 points.
It shows that the general public has some very low expectations of the Trump presidency. In fact, they think he will be a worse president than any president between Obama and Ford. The only president they view Trump as possibly being better than is Nixon (who was impeached and had to resign).
Personally, I wouldn't give Trump that much credit. I think he will be worse than Richard Nixon.