US equity futures were edging lower pre-bell Monday as traders monitored the global trade situation.

Dow Jones Industrial Average futures were down 0.2%, S&P 500 futures were 0.3% lower, and Nasdaq futures were down 0.5%.

Trade tensions reignited as China pushed back against the US, saying Washington has "seriously undermined" the interim trade deal between the two countries.

Oil prices were higher, with front-month global benchmark North Sea Brent crude up 3.8% at $65.19 per barrel and US West Texas Intermediate crude 4.3% higher at $63.41 per barrel.

The Purchasing Managers' Manufacturing index, scheduled for release at 9:45 am ET, is expected to show a 52.3 reading for May versus a 50.2 level in April, according to estimates compiled by Bloomberg.

The Institute for Supply Management's manufacturing index, due at 10 am ET, is expected to come in at 49.3 in May after April's 48.7 level. Forecasters see a 0.4% uptick in construction spending for April following a 0.5% decrease in March.