View photos from Trump's visit.

Minute-by-minute updates of Trump’s visit:

6:18 p.m.: Air Force and President Trump have departed Dobbins.

6:09 p.m.: The President has returned to Dobbins. All interstates have re-opened.

6:03 p.m.: Traffic all over metro Atlanta is clogged due to the President's motorcade forcing interstate closures.

5:50 p.m.: President Trump and his motorcade are making the return trip to Dobbins.

5:38 p.m.: President Trump has wrapped up his visit to the CDC. The motorcade will now return to Dobbins.

5:29 p.m.: President Trump continues to speak to the media at the CDC. According to his schedule released by the White House, he was to depart at 5:15 to return to Dobbins.

5:17 p.m.: The President says anyone who needs a test for the coronavirus will be able to get one.

5:15 p.m.: Gov. Brian Kemp addresses the media at the CDC, saying testing for the coronavirus is ahead of schedule. 

5:07 p.m.: I-75 northbound into Marietta and portions of I-285 are now closed to prepare for Trump's return to Dobbins.

5:02 p.m.: I-85 southbound is closed heading into Midtown in anticipation of Trump's return to Dobbins.

4:56: CDC scientists tell President Trump about efforts to speed up testing for the coronavirus. The President says he is confident in the agency's "fantastic work."

4:45 p.m.: The President says he's impressed with the CDC lab during his tour. "It's incredible," Trump says.

4:41 p.m.: The President is walking into a lab at the CDC headquarters.

4:34 p.m.: The President has arrived at the CDC, where he will get a tour.

4:23 p.m.: Interstates along Trump's route have re-opened. But they will close again for his return trip to Dobbins.

4:18 p.m.: The Presidential motorcade has exited the interstate at North Druid Hills Road on the way to the CDC.

4:02 p.m.: Trump, along with Gov. Brian Kemp, Sen. Kelly Loeffler and Sen. David Perdue are leaving Dobbins. Rep. Doug Collins is traveling in a separate vehicle.

3:56 p.m.: Trump is off Air Force One and is greeting Georgia leaders.

3:52 p.m.: Interstate closures have begun on I-75 southbound from Marietta to Midtown, according to the WSB Traffic Center. I-285 eastbound is closed at 75. The exit ramps are also closed.

3:45 p.m.: Among the dignitaries awaiting Trump are Gov. Brian Kemp and U.S. Rep. Doug Collins, who is running again his choice for a U.S. Senate seat

3:39 p.m. Air Force One has landed at Dobbins. The exact route Trump will take and his schedule have not been released. But from Dobbins, Trump's heavily fortified motorcade — which includes Senators David Perdue and Kelly Loeffler — will travel roughly 20 miles to the CDC on Clifton Road. Expect heavy security along the route, including temporary interstate closures.

Then, Trump will travel back to Dobbins around 5:15 p.m. He’ll take off from the Cobb airfield shortly before 6 p.m. and will head to West Palm Beach for a fundraising event.

The good news? It won’t be raining. Friday afternoon’s forecast includes sunshine and a high of 52 degrees, according to Channel 2 Action News meteorologists.

Trump’s first visit to the Atlanta-based CDC comes during the height of the coronavirus scare. Earlier this week, Georgia leaders confirmed two cases of the virus in Fulton County.

Prior to his trip to Atlanta, Trump visited tornado-ravaged areas of Tennessee.