The euro fell after the European Central Bank said it will be forced to ease further if the currency keeps going up.
The dollar lost 2.5 percent against the yen since last Friday, on guidance that the Federal Reserve will not soon raise base interest rates.
The dollar hit a three-week low on Thursday after minutes from the Federal Reserve's March meeting disappointed dollar bulls.
The dollar bounced back a third of a percent against the yen after a steep slide against Japan's currency.
The dollar fell to a 10-day low against the yen after the Bank of Japan refrained from additional monetary easing.
The dollar lost ground against the yen and dipped versus the euro after U.S. jobs data last week disappointed.
EM currencies have rallied against the dollar after Friday's U.S. jobs number, with some forex experts predicting an interesting period ahead for the asset class.
The dollar fell on Friday after U.S. non-farm payrolls showed job growth necessary for the Fed to wind up its asset purchasing program.
The euro dropped on Thursday after the European Central Bank pledged to use unconventional measures if needed to battle low inflation.
The euro was steady against the dollar after the ECB's policy decision, where they failed to cut rates to boost euro zone growth.
The British pound was strengthened by construction purchasing manager's index, even after other disappointing construction data.
Matthew Circosta, Economist at Moody's Analytics, says the Aussie dollar may be rising because the RBA hasn't talked down the currency in recent weeks.
The yen reached a fresh six-year low on the New Zealand dollar on Monday, as safe-haven demand waned amid hopes of more stimulus from China.
The euro fell to three-week low against the dollar on Friday, with investors wary given strong rhetoric from European Central Bank officials about its recent strength and awaiting German inflation data that could undermine it further.
Tom Richardson, Research Analyst at Watermark Funds Management, expects the Australian dollar to fall from recent highs on the back of a weaker economy in the second-half of 2014.
Andrew Abrahamian, Head of FX Strategy at Compass Global Markets, says increases in commodity prices and the belief that the worst is over for Australia's economy are factors fueling the Aussie's rally.
The dollar edged higher against the euro and the yen after upbeat U.S. economic data.
Michael Sneyd, FX analyst at BNP Paribas, says investors are going long on the Australian dollar and the New Zealand dollar.
Recent strength in the Australian dollar needs to be closely watched for its impact on Australian equities, says David Walker, Senior Analyst at StocksInValue.
Hamish Pepper, Forex Strategist, Asia Pacific at Barclays, highlights four factors that are sustaining the rally in the Aussie dollar.