Dollar strengthens on rising expectations of U.S. rate hike in September

The dollar remained firm in currency markets, bolstered by growing expectations that the Federal Reserve could raise interest rates next month. Recent comments from Federal Reserve official Kevin Warsh suggesting a more hawkish monetary policy stance have reinforced investor bets on a September rate hike, providing support for the greenback across major currency pairs.

The strength in the dollar comes as markets reassess the likelihood of further policy tightening from the central bank. Investors have been closely monitoring signals from Fed policymakers regarding the trajectory of interest rates, with Warsh's remarks seen as indicating a harder line on inflation management than some analysts had previously anticipated.

The Japanese yen fell to levels beyond 160 per dollar, reflecting the broader weakness in the currency as investors shift positioning in response to the changing outlook for U.S. monetary policy. Higher U.S. interest rates typically support the dollar by making dollar-denominated assets more attractive to international investors seeking better returns.

Market participants continue to parse incoming economic data and statements from Fed officials for clues about the central bank's next moves. The degree of tightening expected over coming months remains a key driver of currency valuations across Asian and global financial markets.