At 12.00pm (AEDT), the dollar was trading at $US0.6512/15, up from Wednesday's close of $US0.6430/33.
Since 7.00am, the unit has moved between $US0.6468 and $US0.6523.
ABN Amro currency strategist, Greg Gibbs, said the local currency had benefited from an increase in the market's sentiment for riskier assets in recent days.
"It is doing okay as there is a general improvement in risk appetite over the last couple of days with stronger global banking shares, although we are seeing a little bit of pullback in our time zone,'' Mr Gibbs said.
The effect of February jobs data today had been mixed, with little effect on the local currency.
The nation's unemployment rate was a seasonally adjusted 5.2 per cent in February, up from 4.8 per cent in January, the Australian Bureau of Statistics said.
The jobless rate was the highest since March 2005.
Total employment rose by 1800 jobs in February, better than market expectations of a fall of 20,000.
Full-time employment decreased by 53,800 jobs to 7.664 million and part-time employment was up 55,600 at 3.146 million.
"You could argue it was on the weaker side with the sharp rise in the unemployment rate and the big fall in full-time workers,'' he said.
"It has not had a huge impact on the Aussie dollar.''
The dollar had improved in the past two days courtesy of US dollar weakness, Mr Gibbs said.
"It has been there for the last couple of sessions and it easily could continue,'' he said.
"The US dollar is basically trading as the main risk aversion/safe haven currency at the moment.
"Every time we see equities bounce, the US dollar tends to fall.''
The Reserve Bank of Australia's trade weighted index was at 55.2, up from Wednesday's close of 54.8.
Meanwhile, the Australian bond market was firmer at noon.
The yield on the Commonwealth Government March 2019 bond was 4.293 per cent, down from yesterday's close of 4.333 per cent, while the yield on the April 2012 bond was at 3.038 per cent, down from yesterday's close of 3.110 per cent.
On the Sydney Futures Exchange, the March 10-year bond futures contract price was 95.735, up from yesterday's close of 95.690, while the March three-year bond futures contract was at 96.975, up from Tuesday's close of 96.900.
The March 90-day bank bill futures contract expired at 96.900 at 12.00pm, up from yesterday's close of 96.880.
Dollar falls to US63c
