In or toward the direction from which the wind blows.(adverb)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "upwind" in a sentence
"Too close for comfortJohn Reed's property is 900 meters upwind from a 526-hectare industrial waste pond called Little Blue Run."
"Hey if you are stepping off the bus smelling chocolate you are upwind from the chocolate factory."
"In the backyard, I stand away and upwind from the smoke that billows from Carl Donovan’s enormous barbecue."