It finally started to warm up this week here in Ontario. I know this because I arrived for a meeting yesterday practically glistening with sweat from walking outside.
I am thrilled to have beautiful weather but it really can be a problem for people going to interviews. The last thing you want to do is to wipe sweat from your brow after the first question. 
What to do?
We all arrive early for interviews. Instead of heading to the elevator bank, wait in the lobby until you cool down. Have some water and take a few minutes to compose yourself and do some strategic blotting.
You could wear an undershirt/camisole and then head to the bathroom for a quick change.
Carry your blazer over your arm. You can put it on at the last minute. No one on the subway will care.
Don’t be tempted to wear a lot of cologne to mask a potential BO problem. That’s not the answer. A lot of people have scented sensitivity and that would be a sure fire way to make a crappy impression.
So just take it easy and arrive calm, cool and ready to talk about what you and why you do it so well.
Recruiter's Couch 