The U.S. dollar jumped more than 1 percent against a basket of currencies on Tuesday on growing expectations the Federal Reserve is unlikely to announce any aggressive monetary easing measures at the end of its policy meeting later in the day.
Losses in the U.S. stock market .SPX also dented appetite for risk and lifted the safe-haven greenback.
The ICE Futures U.S. dollar index, which tracks the greenback against a basket of six currencies, rose as high as 81.534 .DXY. It was last at 81.499, up 1 percent. (Editing by James Dalgleish)