Thanks Tater for your info. It is good information. We are now looking at "haze" in the Salt Lake Valley. That will keep a yukky blanket over town and keep the temps low. I hope the "haze" doesn't stay around too long....It can get really depressing. I will evaluate my "layering" and try to commute again if the temps hit mid-20's in the morning. I leave at 4:15am, so I don't worry too much about traffic at that hour, but if the "haze" settles in, I won't tempt fate...