Lollapalooza

 Nancy Toledo, 23, dances atop a trash can during London on da Track's set at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Nancy Toledo, 23, dances atop a trash can during London on da Track's set at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Isaac Holman performs with his English band Slaves at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Isaac Holman performs with his English band Slaves at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Chicago police officers stand by at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Chicago police officers stand by at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 A dancer performs with artist Khalid at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

A dancer performs with artist Khalid at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Festival goers stand in front of large fans on a hot day four of Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Festival goers stand in front of large fans on a hot day four of Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 People spray festival goers with water during Herobust's set on a hot day four of Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

People spray festival goers with water during Herobust's set on a hot day four of Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Alex Kapranos of the Scottish band Franz Ferdinand performs at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Alex Kapranos of the Scottish band Franz Ferdinand performs at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Durand Jones & The Indications performs at Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Durand Jones & The Indications performs at Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Fans cheer as Khalid performs at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Fans cheer as Khalid performs at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Khalid performs at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Khalid performs at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 A festival goer uses a handkerchief to keep dust out of her face at Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

A festival goer uses a handkerchief to keep dust out of her face at Lollapalooza Sunday, August 5, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

 Alex Turner performs with his English band Arctic Monkeys at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Alex Turner performs with his English band Arctic Monkeys at Lollapalooza Thursday, August 2, 2018, at Grant Park in Chicago. (Erin Hooley/Chicago Tribune)

Slaves, Franz Ferdinand, Khalid, Arctic Monkeys, Durand Jones & the Indications, Knox Fortune and many more play in hot temperatures for fans at Lollapalooza 2018 in August in Grant Park, Chicago.