Asian currencies showed a mixed performance against the US dollar, with sentiment potentially being weighed down by a risk-off mood in the market. According to commentary from Westpac strategist Kaitlyn Buhariwalla, souring sentiment around U.S. equity valuations continues to influence trading.

Market participants are also cautious ahead of the release of the U.S. September nonfarm payrolls report later this week. "Recent Fedspeak has pointed towards growing downside risks around the U.S. labor market," Buhariwalla added, highlighting the data's potential impact on the Federal Reserve's policy outlook.

Currency movements were divergent across the region, according to LSEG data. The Malaysian ringgit strengthened, with USD/MYR declining 0.4% to 4.1450. In contrast, the South Korean won weakened, as USD/KRW rose 0.3% to 1,464.10. The Australian dollar also edged lower, with AUD/USD down 0.1% at 0.6497.