The dollar index was at 93.2 on Tuesday, near its strongest level since August 23rd, as investors were cautious ahead of US Federal Reserve’s policy meeting that ends Wednesday. Traders continue to await more clues on when the Fed will start reducing stimulus. Meanwhile, a potential default from China Evergrande and the risk of contagion to other financial markets is weighing on global risk appetite. A deadline for an $83.5 million interest payment on one of its bonds is due on Thursday, and the company has $305 billion in liabilities.