Yet, that failed to give a boost to the U.S. currency, which slid 1.4% against the Canadian dollar overnight.
Sterling was last steady at $1.2062, after rising 0.76% against the dollar in the previous session, while the euro edged 0.19% higher to $1.0624, following a more than 0.5% overnight gain.
Against a basket of currencies, the U.S. dollar index fell 0.14% to 104.06, after slipping 0.5% on Wednesday.
The Aussie was last steady at $0.6835, while the kiwi rose 0.11% to $0.6298, after gaining 0.7% in the previous session.
"The Aussie dollar has obviously benefitted from the coal story," said NAB's Attrill, adding that most other commodity currencies were supported.