Atsugi is a generally safe location for solo female travelers. Like most regions in Japan, it experiences low crime rates, and keeps high levels of cleanliness and public order. The locals are welcoming and respectful, which makes it a pretty safe and friendly place even for solo travelers. It has a good public transport system that operates efficiently, day and night. Although, as in any part of the world, it is always critical to stay vigilant and follow basic safety precautions.