Most squirrels are only active during the daytime and only come out during the daytime.
Squirrels usually sleep during the night like humans and then come out during the day to forage for food and do what they need to do.
However there are a few breeds of squirrels that do prefer to be out at night such as the breed of squirrel known as Sugar Gliders that are nocturnal and you can find them up playing underneath the starry skies of the Amazon Forest.
The other breeds of squirrels that stay up at night mostly are the “Northern Flying Squirrels” and the “Southern Flying Squirrels.”
But other than that most squirrels sleep at night and are out during the daytime.