Yes, and it often is.
It needs some shelter from the direct impact of weather, especially driving rain and sun, but is built to survive damp, dirty, and changeable environments.
The units have maintenance-free cooling vents with dust and insect filters. The internal components are industrial-grade hardware of the kind used for major public installations, and the internal power protection means that it can be safely powered by various means.
Outdoor antennas with extension leads enable an Info-Point unit and its antenna to be located several metres apart, This enables optimisation of the positioning of both.