Comet PanSTARRS is at its brightest and is visible this week. Unfortunately, it will be hard to spot because it is very close to the sun.
If the skies clear tonight, look toward the western horizon about 7:30 pm (Central Daylight Time) or so. The comet should be to the left of the crescent moon. It will be hard to spot in the glow of the twilight, but binoculars may help. As it gets darker, the comet gets closer to the horizon (and probably behind buildings or trees), so there is only a short window of opportunity.