What causes a Ford Focus to overheat?

My Ford Focus is starting to overheat even though the weather isn't particularly hot. What could be causing this issue?

One potential cause of your car overheating could be a malfunctioning thermostat. It's a relatively easy and inexpensive fix, but if left unaddressed, it could cause further damage to your engine.

Another possibility is a faulty radiator fan. This is a common issue in Ford Focus cars, and if the fan is not working properly, it won't be able to cool the engine down effectively.