Apartment question

I have a question so I live in Arizona . I live in some apartments with my sis n law . We pay $1,000 a month . The problem is she has a baby that’s 1 and I have my preemie baby . At night it smells so much like weed in our apartment that I have to leave to my moms house with my baby . One neighbor is always playing music so loud that the wall shakes I have complained to the office but they said you need to start calling the cops . The weed there not much we can do . They sent out a email to all residents , but honestly it hasn’t stop . We get headache that are horrible is ridiculous. My lease is up in May, but I feel I can’t take it anymore. Any suggestions or what can happen when we break our lease ?