[Pazuzu]

Your last chance will be Wednesday. It gets higher each day until then, but starting Wednesday the Moon will be getting bigger and bigger and will wash it out after that. No one knows what the comet will look like after this full Moon cycle, but it will surely be much dimmer.

Northwest, as soon as the horizon gets dark, moving each day but basically hanging out under the bowl of the Big Dipper. The further North you are the better. Binoculars make it pretty easy even in some cities, naked eye is hard unless it's dark where you are.