In the latest trade, the euro fell 0.14 percent to $1.05575 after hitting a six-month low of $1.05555 earlier in the session. The euro is heading for a quarterly loss of more than three percent, its worst quarterly performance in a year.
Sterling fell 0.09 percent to $1.2146 after hitting a six-month low of $1.2141 earlier on Wednesday. Sterling is heading for a quarterly loss of more than four percent.
The dollar index climbed to a ten-month high of 106.30.
The rise in U.S. Treasury yields caused the yen to falter, which rose slightly against the dollar to 149.03 yen after falling to an 11-month low of 149.185 on Tuesday.
Some experts believe that exceeding the threshold of 150 yen per dollar could make Japanese authorities intervene to support the currency, as they did last year.
The Australian dollar fell 0.20 percent to $0.6385.
The New Zealand dollar fell 0.23 percent to $0.5931.