Consider changing your evironment. There are several semi-circular enclosures with foam inside to block some noise. In my world, I do a weekly pre-recorded show in what used to be a dormroom. The Shure studio mics that were fine in a studio picked up all kinds of room noise, but my performace mics worked much better. As you are not in a studio, I'd suggest something radio news people use. Call up some radio station, you've got a few in NYC!
You may also need some kind of fabric behind you as well. Too bad you can't get a cubicle to work in.
You may also need some kind of fabric behind you as well. Too bad you can't get a cubicle to work in.