Upwind (adverb)

In the direction from which the wind is blowing.

Origin:

Compound of up + wind.

Examples:

1. The balloon drifted upwind of the launch site.
2. We need to position the boat upwind of the fishing spot.
3. She could smell the smoke from the fire upwind.
4. The wildfire was spreading upwind towards the town.
5. The sails were adjusted to take advantage of the upwind breeze.