It depends on which part of the city you are in, crime is higher here but it's mostly just minor thefts and vandalism, but I've lived here for 18 years and nothing has happened to me yet and I go out even at night, if you watch where you are and keep an eye on your things then it's safe. When visiting, I recommend the surrounding area rather than the city

Ústí nad Labem at the day time is safe like every other city, but i would not recommend to walk alone on night. It's not dangerous but not safe either if you don't know the city. And at the day time is completely safe even tho sometimes might someone yell from across the the street or being approached by methhead BUT they're completely harmless in 99% of the time.

Ústí nad Labem has few unsafe localities but other than that its a very save city. The main train station is not that safe when its dark but other than that its good. But Ústí nad Labem offers many natural beautiful places near the city and they are very much safe for women travellers.