The U.S. dollar traded mixed to lower against the most major currencies ahead of the Fed's interest rate decision. Investors expect that the Fed will end its bond-buying program. They are awaiting new signs for further monetary policy in the U.S. The slowdown of the global growth and recent weaker-than-expected U.S. economic data could lead that the Fed will keep its low interest rate for a longer period.

The euro rose against the U.S. dollar in the absence of any major economic reports from the Eurozone.

The British pound increased against the U.S. dollar. In the morning trading session, the pound fell against the greenback after the weaker-than-expected economic data from the U.K. The number of mortgages approvals in the U.K. fell to 61,267 in September from 64,054 in August. That was the lowest level since July 2013. Analysts had expected the number of mortgages approvals to decline to 63,000.

Total lending to individuals in the U.K. rose by GBP 2.7 billion in September, missing expectations for an increase by GBP 2.8 billion, after a GBP 3.2 billion gain in August.

The Canadian dollar traded slightly higher against the U.S. dollar despite the weaker-than-expected economic data from Canada. Canada's raw materials purchase price index fell 1.8% in September, missing expectations for a 1.5% rise, a 2.2% drop in August.

Canada's industrial product price index declined 0.4% in September, missing forecasts for a 0.3% rise, after a 0.3% gain in August. August's figure was revised up from a 0.2% increase.

The New Zealand dollar traded higher against the U.S. dollar after the solid the ANZ business confidence index for New Zealand. The ANZ business confidence index for New Zealand rose to 26.5 in October from 13.4 in September.

Market participants are awaiting the Reserve Bank of New Zealand's and Fed' interest rate decision on Wednesday. They expect that the Reserve Bank of New Zealand will keep its interest rate unchanged at 3.50%, and the Fed will end its bond-buying program.

Investors also expects new signs for further monetary policy.

The Australian dollar traded higher against the U.S. dollar in the absence of any major economic reports from Australia.

Market participants are awaiting the Fed' interest rate decision on Wednesday.

The Japanese yen traded mixed against the U.S. dollar. In the overnight trading session, the yen increased against the U.S. dollar after the better-than-expected industrial production from Japan. Preliminary industrial production in Japan climbed 2.7% in September, exceeding expectations for a 2.3% gain, after a 1.9% decline in August.

On a yearly basis, preliminary industrial production rose 0.6% in September, beating forecasts for a 2.6% decrease, after 3.3% drop in August.