The 19-year-old Herta raced to his first career victory at the Circuit of the Americas this year. Now he has is first pole position and the first for Harding-Steinbrenner Racing. The team is co-owned by George Steinbrenner IV, grandson of the late New York Yankees owner.
Alexander Rossi will start second Sunday, followed by Will Power, Josef Newgarden, Graham Rahal and Takuma Sato.
The son of former IndyCar driver Bryan Herta, Herta broke the pole-position age record held by Rahal.