Wall Street's main indexes were gearing up for a higher open on Tuesday, after data showed inflation rose broadly in line with expectations in July, putting the Federal Reserve on track to lower interest rates in September.

Dow futures dip as markets brace for July CPI, expected to show core inflation rising for the first time in six months.

Investors will be closely watching the extent to which tariffs affected prices in July. A sharper rise in core goods prices compared with the previous month is expected.