The trade-weighted index increased to 73.07 from 72.82 on Friday.
The US dollar index, which measures the greenback against a basket of currencies, sank to its lowest in more than a week after the key US non-farm payrolls report, which is closely watched by the Federal Reserve, showed a mix result for February.
While the number of jobs created in the month beat expectations at 242,000, average hourly earnings fell, suggesting inflation remains muted and will probably prompt the Fed to hold off on hiking interest rates anytime soon.
"While non-farm payrolls for February beat expectations (and there were upward revision to the previous two months), the unemployment rate was steady at 4.9% and wage pressures were apparently absent," Bank of NZ senior market strategist Kymberly Martin said in a note.
"While the overall message was of continued improvement in the labour market, it was not too hot for markets to fear imminent Fed action."
In NZ today, fourth-quarter wholesale trade data is released at 10.45am.
The NZ dollar advanced to 4.4323 Chinese yuan from 4.3968 yuan on Friday after the China’s National People’s Congress announced at the weekend that the country's 2016 growth target is 6.5-7%, and set its budget deficit target for 2016 at 3% of gross domestic product from 2.3% in 2015.
The local currency gained to 91.76 Australian cents from 91.56 cents on Friday, rose to 61.88 euro cents from 61.64 cents, increased to 77.49 Japanese yen from 76.70 yen, and advanced to 47.87 British pence from 47.66 pence.
