Herta and Andretti top Long Beach warm-up
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| Colton Herta |
Colton Herta turned the fastest lap in morning warm-up for today's Acura Grand Prix of Long Beach in his Honda in a session that saw Honda sweep the top-9 positions.
Marco Andretti and his Andretti Honda teammate Ryan Hunter-Reay were 2nd and third while Rahal Honda teammates Graham Rahal and Takuma Sato rounded out the top-5.
Sunday Morning Warm-up Times
| Pos | No | Name | FTime | Diff | Gap | Engine | Tire | Team |
| 1 | 88 | Colton Herta | 1:07.105 | –.—- | –.—- | Honda | A | Harding Steinbrenner Racing |
| 2 | 98 | Marco Andretti | 1:07.347 | 0.2413 | 0.2413 | Honda | A | Andretti Herta Autosport w/Curb-Agajanian |
| 3 | 28 | Ryan Hunter-Reay | 1:07.402 | 0.2964 | 0.0551 | Honda | A | Andretti Autosport |
| 4 | 15 | Graham Rahal | 1:07.577 | 0.4716 | 0.1752 | Honda | A | Rahal Letterman Lanigan Racing |
| 5 | 30 | Takuma Sato | 1:07.702 | 0.5968 | 0.1252 | Honda | A | Rahal Letterman Lanigan Racing |
| 6 | 9 | Scott Dixon | 1:07.902 | 0.7965 | 0.1997 | Honda | P | Chip Ganassi Racing Teams |
| 7 | 27 | Alexander Rossi | 1:07.905 | 0.7998 | 0.0033 | Honda | P | Andretti Autosport |
| 8 | 26 | Zach Veach | 1:08.318 | 1.2130 | 0.4132 | Honda | A | Andretti Autosport |
| 9 | 18 | Sebastien Bourdais | 1:08.375 | 1.2696 | 0.0566 | Honda | A | Dale Coyne Racing with Vasser-Sullivan |
| 10 | 21 | Spencer Pigot | 1:08.389 | 1.2833 | 0.0137 | Chevy | P | Ed Carpenter Racing |
| 11 | 5 | James Hinchcliffe | 1:08.399 | 1.2937 | 0.0104 | Honda | P | Arrow Schmidt Peterson Motorsports |
| 12 | 31 | Patricio O'Ward | 1:08.528 | 1.4232 | 0.1295 | Chevy | P | Carlin |
| 13 | 12 | Will Power | 1:08.533 | 1.4273 | 0.0041 | Chevy | P | Team Penske |
| 14 | 19 | Santino Ferrucci | 1:08.539 | 1.4340 | 0.0067 | Honda | A | Dale Coyne Racing |
| 15 | 22 | Simon Pagenaud | 1:08.589 | 1.4834 | 0.0494 | Chevy | P | Team Penske |
| 16 | 10 | Felix Rosenqvist | 1:08.593 | 1.4874 | 0.0040 | Honda | P | Chip Ganassi Racing Teams |
| 17 | 14 | Tony Kanaan | 1:08.656 | 1.5511 | 0.0637 | Chevy | P | AJ Foyt Enterprises |
| 18 | 60 | Jack Harvey | 1:08.740 | 1.6348 | 0.0837 | Honda | P | Meyer Shank Racing w/Arrow SPM |
| 19 | 20 | Ed Jones | 1:08.746 | 1.6402 | 0.0054 | Chevy | P | Ed Carpenter Racing |
| 20 | 2 | Josef Newgarden | 1:08.967 | 1.8615 | 0.2213 | Chevy | P | Team Penske |
| 21 | 4 | Matheus Leist | 1:08.987 | 1.8821 | 0.0206 | Chevy | P | AJ Foyt Enterprises |
| 22 | 59 | Max Chilton | 1:09.023 | 1.9180 | 0.0359 | Chevy | P | Carlin |
| 23 | 7 | Marcus Ericsson | 1:09.263 | 2.1576 | 0.2396 | Honda | P | Arrow Schmidt Peterson Motorsport |