The closure is part of state officials' efforts to "streamline" emissions testing and save $8 million.
Mayor Emanuel was joined by Ald. Matt O'Shea a day after touting a mentoring initiative.
The city saw a ten-fold increase in the number of people registering to vote Friday.
Mayor Rahm Emanuel said crime was a complex, multigenerational problem with no easy fix.
The 1½-hour debate hosted by former Chicago newsman Lester Holt will start at 8 p.m. Monday.
The presidential candidate also said the city's violent crime was worse than Afghanistan's.
Chicagoans gave $4.6 million to Hillary Clinton's bid in 2016. Obama got $11.2 million in 2008.
An emotional Rahm Emanuel proposed $36 million more for mentoring programs, among other solutions.
"I don't know that we'd go to Appalachia and talk about absent parents," said Ald. Ameya Pawar.
Mayor Rahm Emanuel called on a need for Chicago to address its violence and come together to prevent it.
Those who wish to attend must RSVP online in advance.
The promise follows a rash of high-profile crimes in the Downtown neighborhood.
Uptown's homeless residents hosted a press conference Wednesday to object to city restrictions.
Chicagoans have given $4.6 million to Hillary Clinton's bid in 2016. Obama got $11.2 million in 2008.
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