University of Michigan's Consumer Sentiment survey came at 101.1 in October, up from 95.1 in September, revised lower from 95.3, while analysts expected 95.1.
As of 03:17 GMT, the dollar index, tracking the greenback against a basket of major rivals, fell to 92.84 from the opening of 93.06, with an intraday high at 93.24, and the lowest since September 26 at 92.75.
The current conditions index in the same survey rose to 116.4 from 111.7, while economic outlook rose to 91.3 from 84.4.
One-year inflation outlook fell to 2.3% from 2.7% in September, while five-year outlook dipped to 2.4% from 2.5%.