as defined by Webster's online dictionary:
not conducive to health; unwholesome (an insalubrious climate)
I love this word. It's awesome to say and I've only ever seen it used in 19th century writing or BBC adaptions of epic novels. Today it appeared in The Times (London) in an article about building a modern design home in Stratford. The sentence was "The five-bedroom semi in the insalubrious suburb..."
I will be returning on my insalubrious suburb after the gym this evening. Front yards littered with the carcasses of cars mounted on cinder blocks and festooned with remanents of lawn mowers, bbqs and other household applicances is most unwholesome... :)