The dollar rose to an eight-month high on Monday amid heightened expectations that the US Federal Reserve might raise interest rates next month, driving down the prices of copper, gold and other metals.

World equity markets slipped, with US stocks ending slightly lower in quiet trading after strong gains last week.

Worries that a buoyant dollar could discourage producers from cutting supply despite weak demand weighed on base metals prices. Copper fell to its cheapest in six months before recovering.

The dollar index, which measures the greenback against six major currencies, rose as much as 0.4 per cent, touching 100.000, an eight-month high not far from this year's peak of 100.390.

San Francisco Fed President John Williams on Saturday cited a "strong case" for raising rates when Fed policymakers meet next month, as long as US economic data does not disappoint. His comments overshadowed Monday's lackluster US manufacturing and housing reports.

"For him to acknowledge that there's a strong case for higher rates next month is a strong signal to the market that there's increasing consensus at the Fed that rates are likely to rise next month," said Omer Esiner, chief market analyst at Commonwealth Foreign Exchange in Washington.

A big healthcare deal failed to impress US stock investors. Pfizer's announcement of what is expected to be the biggest-ever healthcare deal pushed its shares down 2.6 per cent, making it one of the biggest drags on the S&P. Target company Allergan closed 3.4 per cent lower after the $160 billion deal announcement.

The Dow Jones industrial average fell 31.13 points, or 0.17 per cent, to 17,792.68, the S&P 500 lost 2.58 points, or 0.12 per cent, to 2,086.59 and the Nasdaq Composite dropped 2.44 points, or 0.05 per cent, to 5,102.48.

"We had a very large rally last week, and it's not surprising to see the market correct after that," said Stephen Massocca, Chief Investment Officer of Wedbush Equity Management LLC in San Francisco.

The MSCI index of global stock markets fell 0.3 per cent, and a broad gauge of European stocks ended down 0.3 per cent, pressured by commodity-related losses.

Three-month copper in London hit a low of $4,443.50 a tonne before recovering to end at $4,490, down 2 per cent. LME nickel fell as far as $8,175 before ending down 5 per cent at $8,300. Spot gold was down 0.9 per cent at $1,068 an ounce. Silver hit its lowest level in more than six years.

The Thomson Reuters Core Commodity CRB index hit its lowest since November 2002 before bouncing back. It was last down 0.2 per cent.

Crude oil prices ended mixed. Supply worries offset Saudi Arabia's pledge to work on price stability. Brent futures settled up 17 cents at $44.83 a barrel, while US crude finished down 15 cents at $41.75.

US Treasuries prices rose as a solid two-year note auction renewed demand for longer-dated bonds. Benchmark 10-year notes were up 4/32 in price to yield 2.246 per cent, down nearly 2 basis points. – Reuters