No
As both "down" and "wind" are words, then downwind is a compound word.
Xavier Downwind was born in 1891.
Xavier Downwind died on 1968-07-26.
downwind; away
downcast downgrade downhearted downhill downplay downside downsize downspout downtime downtown downtrend downtrodden downwind
Downwind.
The cast of Downwind - 2002 includes: Dan Fahey as Researcher Carole Gallagher as Photojournalist
Downwind Downstream - 1989 was released on: USA: April 1989 (Los Angeles, California)
leeward
the leeward side
A snowstorm moves downwind.
A "snowstorm" implies that snow is being blown by a wind, therefore, it would travel downwind! The clouds carrying the snow would also travel downwind.