This is the 11159th most frequent Polish word.
gorszej
"Of worse quality" or "worse" (comparative form of "zły" - bad).
Here, 'gorszej' is the genitive singular feminine form of 'gorszy', which means 'worse', and it describes 'dzielnicy', a feminine noun in the genitive case.
Mam koleżankę z gorszej dzielnicy.
I have a friend from a worse district.
Here, 'gorszej' is the genitive singular feminine form of 'gorszy', applied to 'jakości', meaning 'quality', which is feminine.
Uczniowie unikają gorszej jakości książek.
Students avoid lower quality books.
In this context, 'gorszej' modifies 'pogody', which is a feminine noun in the genitive case.