Ok, with that info I can give you these morsels of info.
First, Lake Superior is not going to increase the humidity in the summer. It's waters are typically much cooler than the summer time air temps and thus the water is slow to evaporate from it. You may get some fog to form near the lake on very humid days, but that is because the air is actually being cooled by the lake to the dewpoint, not because humidity is being added to the air.
Which brings up my next point. The closer you are to the lake in the warm season, the cooler you will be. Lake Superior acts like a giant air conditioner all summer long. I have been in 90 degree temps in areas away from the lake and gone down to the lake shore and temps will be 25-30 degrees cooler right down by the lake. So if you were afraid to be too close to the lake because it would make things less comfortable in the summer, you need to turn that thinking around 180 degrees.
The closer to the lake you are, the cooler it will be in the summer.
As for air pollution, we have little to none of it in all of the UP all year long. Again, the closer to the lake the clearer the air, just because the lake produces zero air pollution, so when the winds are from off the lake, the air closest to the lake will be the most free from any pollution, but the bottom line is, air pollution in the UP will be one of your least concerns living in the UP!
Elevation does play a role in how much snow flies. So areas right along the Lake Superior shoreline will typically not get as much snow as those inland a bit (but still in the main LES belt) and at a higher elevation. Examples of this is the amount of snow in Ontonagon vs. Rockland or Eagle River (MI) vs. Phoenix (just 2 miles away from each other). Obviously, the further inland you go the better chance you have of getting out of the main LES bands.
Here is a map that I produced years ago showing the primary and secondary LES belts:
Within that map I could have drawn what could be called the enhanced-primary areas, or perhaps more plainly put "the big dump zones". One area would run north of a line from roughly Ironwood MI to the midway point between Baraga and Houghton, with a bit of a sag south in the line to include most of the Lake Gogebic area. This area would exclude most locations within a mile or two of the lake shoreline. The second big dump area would be an area from just east of Munising to just south of Paradise that starts inland around a mile or two and extends inland to around 15-20 miles. The average seasonal snows for the different regions would play out something like this:
Big Dump Zone = 180"+
Primary Zone = 100-180"
Secondary Zone = Less than 100"
I chose my spot for a number of reasons:
1st and foremost, we are in the big dump zone for lake effect snow. I researched data for about 10 years and could not find a spot in the UP (east of the Rockies for that matter!) that gets more snow on a 30 year scale.
Secondly, I did not want to be so far out in the sticks that a trip to town was a major event. It is nice to be in the sticks and enjoy the serenity of the Keweenaw and UP, but still have a 10 minute drive to Calumet to get just about anything I need and a 25 minute trip to Houghton/Hancock for pretty much anything else. Don't under value the convenience of having stores near-by. Isolation is nice, until you need that one thing to complete a task or make a meal and then it's not so nice!
Third, the snow season does not last all year long, which means you need something to do in the summer. I love the woods, but I also love the water and beaches. So I wanted to be able to take my hikes in the woods, but also be able to get to the big lake without much of a drive. Living where I do, I am a 10-15 minute drive to either coasts of the Keweenaw and can pick and chose as I want, which is especially nice when picking a beach with an onshore breeze for that natural AC from Lake Superior. Inland lakes are nice too, and we have a handful at my disposal, but they are just not the same as the big lake when it comes to a cooling effect.
Plus, for some reason, the Keweenaw just grabs me in a very special way. Not sure why. I have been to just about every other locale in the UP (with the exception of the far east by the Soo) and they just do not have the same grab as the Keweenaw. This is a personal thing and will differ from individual to individual. So I would say that if you have a place that has that special grab for you, then perhaps that is where you should end up.
Hope this info is helpful to you.
-John