Did some quick digging and didn't find anything (nothing recent anyway) on the subject, so I pose this question to the more-informed-than-I masses...
What has proven a good option for footwear for hiking in hot weather? I'm mainly talking trails like Squaw Peak and Camelback (although probably some Flatiron mixed in there too.)
I hiked Camelback on the 4th of July in my Salomon boots, and while they do have some GoreTex for breathability, they're basically full height ovens in that kind of heat. They also weigh a ton so that wasn't really desirable either. I love them for backpacking and non-triple-digit temps, but something's gotta change now that I've become determined to hike through the summers here in Phoenix.
I've had Merrel Moab Ventilators in the past and that's the direction I'm leaning again unless something better has come along that doesn't go too crazy overboard on the cost factor. They weren't the most durable footwear I've ever had, but they did get abused pretty heavily on Squaw Peak and even pressed into service for backpacking, so I wasn't too upset on their longevity.
All I know for sure is that I do NOT want to tackle Camelback again mid-summer in those Salomon's as the heat inside was, for the first time ever for me, VERY noticeable and uncomfortable. Breathability is my #1 goal now. (Not to the point of sandals though, lol.)