The $A soared above $US97c overnight, consolidating its position in a 25-year high zone, reaching a value not seen since the days of a fixed exchange rate.
The new $A surge comes amid continued credit market concerns battering the US currency, concerns which also sharply lowered the Australian share market again today.
Early on Tuesday morning, the $A was trading at $US97c, up one US cent from Friday's close of US96.05.
The $A hit US97.2c at 1pm on Tuesday.
The lift in the $A against the weaker $US has come despite the US government overnight announcing it will provide money to rescue troubled government-sponsored mortgage backers Fannie Mae and Freddie Mac.
The $A reached $US96.68c on June 30 this year, but has not been above $US97 since February 16, 1983.