Both the planet and the moon will be bright enough to see in big cities filled with light pollution and through hazy or partly cloudy skies, according to Fazekas. While clear skies are ideal, people will mainly have to worry about light pollution from the moon outshining Mars, but they can cover the moon with their thumb to get a better look.
The main obstacles that would block a person’s view are buildings, trees and a completely cloudy sky.
To have the best view possible, Fazekas said it’s best to use either binoculars or a small telescope.