The U.S. ISM non-manufacturing composite index for September is due at 10:00 am ET Wednesday.
Ahead of the data, the greenback traded mixed against its major rivals. While the greenback held steady against the franc and the yen, it rose against the euro. Against the pound, it weakened.
The greenback was worth 113.90 against the yen, 0.9890 against the franc, 1.1531 against the euro and 1.3003 against the pound as of 9:55 am ET.