U.S. stock futures were little changed on Monday, ahead of the Federal Reserve's policy decision on Wednesday.
Read MoreTrack US stock-index futures
Investors are anxious to learn when the central bank might opt to hike interest rates.
"U.S. data is now consistently humming...this is causing mass speculation that a language change to the (Fed's) statement is imminent," Evan Lucas, a strategist at IG Markets said in a research note.
Data on Monday included the Empire Manufacturing report, which came in at 27.54 last month versus 14.69 in August. The Fed's monthly industrial production and capacity utilization report had industrial production down 0.1 percent in August.
Adobe Systems reports results after the close of trade.
Over the weekend, China released a raft of data that raised concerns about a weakening economy. August industrial output rose 6.9 percent on year, its slowest pace since 2008, while fixed-asset investment and retail sales both missed forecasts.
Read MoreIs China stimulus a done deal?
Geopolitics also weighed on global sentiment, with fighting reported in eastern Ukraine on Saturday after an eight-day ceasefire.
Australia became the first country to join the U.S. coalition fighting Islamic State militants and U.K. Prime Minister David Cameron said he was considering increasing military participation following the beheading of a British hostage.