The pole was the 26th of Charles Leclerc's career, and third of the season.
The final phase of qualifying was halted, with only Piastri and Haas' Nico Hulkenberg having set times, when Sainz slammed backwards into the barriers at the final corner as he prepared to start his flying lap.
World champion Max Verstappen took the first pole position of the Formula One season in Bahrain on Friday.
Verstappen, who had started alongside Norris on the front row, was leading by lap three and could then build a buffer and take control.
Red Bull make changes to car after discussions with FIA
Lando Norris roared to his second successive pole position, and third in four races, in a McLaren front row sweep with team mate Oscar Piastri
McLaren's Lando Norris dominated the Singapore Grand Prix from start to finish on Sunday to take another chunk out of Max Verstappen's Formula One championship lead.
Mercedes driver George Russell has been disqualified and lost his Belgium Grand Prix win on Sunday, after his car was found to be underweight, and his teammate Lewis Hamilton was promoted to first place.
Max Verstappen won Formula One's first Chinese Grand Prix in five years on Sunday.
Red Bull's Max Verstappen equalled Ayrton Senna's record of eight pole positions in a row.
Lando Norris put McLaren on pole position for the Spanish Grand Prix on Saturday
Leclerc took pole in Monaco in 2021, but did not start the race due to a driveshaft failure, and 2022 when he ended up fourth.
Max Verstappen, who could seal his fourth successive championship on Saturday, will line up fifth on the starting grid
Red Bull's Verstappen, who had been on pole at Zandvoort every year since the circuit returned in 2021 and has yet to be beaten there, will still line up alongside the Briton on the front row.
Lewis Hamilton will bring down the curtain on his Mercedes career in Abu Dhabi on Sunday as his past and future Formula One teams, McLaren and Ferrari, fight for a constructors' title to end years of waiting.
Lewis Hamilton shed pent-up tears of joy after ending a 945-day wait for a win with a record ninth British Grand Prix victory in front of his home fans on Sunday.
Mexican team mate Sergio Perez qualified second fastest in a front row lockout for Red Bull, 15 years after the team took their first win at the Shanghai International Circuit with Sebastian Vettel.
McLaren's Lando Norris hailed the best qualifying lap of his career after beating F1 leader Max Verstappen to pole position at the US Grand Prix.
Formula One world champion Max Verstappen took pole position for a third straight year at the Japanese Grand Prix on Saturday, with Sergio Perez qualifying a close second to ensure a Red Bull front-row lockout.
Lando Norris capitalised on a bit of good fortune to win the Miami Grand Prix on Sunday
Red Bull's triple World champion Max Verstappen wrapped up a year of unprecedented dominance with his record-extending 19th win in 22 races at the season-ending Abu Dhabi Grand Prix on Sunday.
Max Verstappen held off a late charge by McLaren's Lando Norris to win the Emilia Romagna Grand Prix
World champion Max Verstappen got back to winning ways on Sunday with a third straight pole-to-flag victory at the Japanese Formula One Grand Prix, leading teammate Sergio Perez across the line for a Red Bull 1-2 at Suzuka.
Charles Leclerc won the US Grand Prix in a Ferrari one-two with Carlos Sainz on Sunday as Formula One championship leader Max Verstappen dealt Lando Norris a significant setback in their title battle.
Max Verstappen took his fifth pole position in a row at the British Grand Prix.
George Russell led Lewis Hamilton in a Mercedes front-row lockout in qualifying for the British Grand Prix on Saturday with McLaren's Lando Norris completing a rare one-two-three of home drivers.
Max Verstappen leads Red Bull front row sweep in Bahrain
The win was a first for Ferrari in Mexico since 1990 and fourth of Carlos Sainz's career.
Red Bull's Max Verstappen dealt Lando Norris a shattering blow in their Formula One title battle by winning a wet and chaotic Sao Paulo Grand Prix from 17th on the grid.
Red Bull's triple World champion Max Verstappen claimed pole position on Saturday for the Miami Grand Prix, to start from the front of the grid for the sixth straight race this season.
Dominant Formula One leader Max Verstappen ran away with the Hungarian Grand Prix by a mighty margin on Sunday as Red Bull made history with a record 12th victory in a row.
Formula One leader Max Verstappen celebrated a record-equalling ninth successive victory on Sunday after beating the rain to win a chaotic and red-flagged Dutch Grand Prix for the third year in a row.
Max Verstappen won the first sprint race of the Formula One season at the Chinese Grand Prix on Saturday.
Ferrari's Carlos Sainz won the Australian Grand Prix on Sunday in a triumphant return two weeks after appendicitis surgery as Red Bull's World champion Max Verstappen suffered his first retirement in two years.
Verstappen's hopes of a record-extending 11th successive victory looked a long shot on a city circuit where overtaking is never easy.
Red Bull's Max Verstappen started the season with a commanding Bahrain Grand Prix win from pole position.
Max Verstappen became the first Formula One driver to take 16 victories in a season
Formula One leader Max Verstappen won the British Grand Prix on Sunday as Red Bull stayed unbeaten in 2023 and equalled McLaren's 1988 record run of 11 victories in a row.
Red Bull's triple Formula One world champion Max Verstappen won a US Grand Prix sprint race from pole position on Saturday after an early challenge from Mercedes's Lewis Hamilton.
Carlos Sainz lapped Monza's "Temple of Speed" with a fastest time of one minute 20.294 seconds, 0.013 quicker than Max Verstappen's final flying lap.