I never pay attention or look at the wind until I get to where I want to hunt and even then I may go ahead hunt the spot even when I think the wind is wrong.
I'm going to defend Headhunter's thoughts a bit here, based on my assumption he likely hunts "higher" than most hunters.
I have found that wind direction typically becomes much less an issue, the higher up a tree you hunt. I commonly have older deer directly downwind from me, within bow-range, never smell me,
IF I'm 20-something feet high in my climber. Where possible, I often hunt 30-feet high.
IMO, in most close-range setups (under 50 yards), being over 20 feet high is critical, and there seems to be something almost magical in going over 22 feet.
At least for archery & muzzleloader, and/or anywhere I'm expecting the deer to be under 100 yds, my most common tree-climbing height is about 23 feet, and higher is preferred to lower. Since this is impossible with many trees, I often just pick a different tree in a different spot, just so can get higher up. The most recent morning I hunted, I climbed up to exactly 30 feet before settling in, and in a particular tree I hadn't hunted in almost exactly 1 year, and won't hunt again this year.
In many cases, your scent will blow over & above the deer, then become more diluted at all downrange distances, as compared to if you're on the ground or not as high above it. Your scent molecules actually "stick" and stick more to any vegetation or surfaces the closer they are to the source.
Another thing: The wind direction typically shifts dramatically while you are on stand. Being higher up just minimizes the problems this can cause.
Yes, there are many "downsides" to hunting from a higher perch, so each "hunt" is weighed based on all the options. Since I cannot find a "safe" ladder stand over 21 feet, that largely rules out most ladder-stand hunting for me personally. Never mind I do often hunt from the ground, and do that more than I hunt from ladder stands.
I've said this many times:
The best way to ruin a great spot is to place a ladder stand in it.
This is in part because the wind will typically shift around,
no matter how it was forecast when you decided to hunt that spot.
Another part of how it ruins the spot is via the ladder stand being placed,
it becomes a more "convenient" spot to hunt, then over-hunt.
Lastly, it is seen by other hunters (often including trespassers), who will now start hunting a "spot"
they didn't and maybe wouldn't previously, just because it has now become "convenient"
for them, too.
By contrast, packing in, climbing, descending, & packing out a climbing stand daily is the absolute least "convenient" way of hunting, as it requires getting up earlier, and more "work" with each hunt. For me, it has generally been the most effective way to hunt "undisturbed" deer.
Just have to get up and get going a little earlier with each outing.
Yes, there are exceptions to everything said above.
But most set-ups are not exceptions.