I'd love to visit Casablanca, but I see there is a large forest planted about 30 miles outside of town, which includes many eucalyptus tree. I am allergic to eucalyptus. Has anyone with the same allergy traveled to Casablanca and had problems? Also, does the wind mainly blow west, inward from the sea? Thanks!
Prevailing wind is northerly or on shore.
There's a small wood near the road to Marrakech that is mostly eucalyptus, but I wouldn't describe it as a forest.
The air quality can be pretty bad anyway. I'd be surprised if you could sense eucalyptus from anywhere near the town centre or coast, sadly.
adding to Mark's answer - Casablanca is a large city with surely enough multitude of traffic to drown out or supersede any other irritants in the air! The main attraction is I reckon the Hassan mosque which is beside the open sea.....any other attractions that are around the city centre are a long way from the city outskirts.
Third comment; the predominant winds in the Northern Hemisphere blow west to east; but local topography and other conditions many mean than things can be different on any given day.