The dollar index was down 0.3% at 104.38, with the euro firmer on the day, at $1.0536, up 0.3%. The European single currency rose after European Central Bank Chief Economist Philip Lane said the ECB will raise interest rates by 25 basis points at its July meeting, but the size of its September hike is still to be decided, suggesting a larger 50 basis point hike could be in the cards.