Where I live in Andover (~25 miles north of Boston) I only get WRKO cleanly at night. WBZ is full of static and electronic whistles that makes long-term listening at home very frustrating. Same with the other Boston stations (I only get 590 and 850, full of static...but no other stations).
When I am in my car, whether I get WBZ or not depends on which side of the road I am driving on: if I am on the side of the road where the Xfinity and Verizon wires are located, I can't hear WBZ. When the wires are on the other side of the road, I get WBZ with a lot of noise. Thankfully my car does have an HD radio, so it's off to WXKS-FM HD2.
Since Sirius-XM dropped the Boston traffic reports, WBZ is all that's left for traffic reports.