Polarizing filter vs. light pollution
I suppose it doesn't hurt to experiment, but my guess would be that it probably would not help. The light pollution is coming from a very wide angle, so I would not expect the light reflected back from atmospheric particles to be polarized in the same plane the way light directly from the sun or from the full moon is.
|Black on White by RaVN11|
|Hummingbird and Bee by dibilio57|
from A Big Year - birds
|xheneta iseni _for DPReview by Mike Slade|
from - My Fair Lady - (Portraits in Full Colours Only + A Border)