There was a stretch of a few days during my time in Toronto (10 years) that was just impossibly, unbearably hot and humid. You'd walk out of a building and hit a solid wall of what essentially felt like... steam. I've been to saunas that were way cooler than that. If I were a bike commuter at the time, I probably would not have ridden then, but I was not at the time.

Other than that heat has not stopped me from riding. I love heat. It's mid-June, and I'm starting to feel we're been cheated on the summer... we've only had a handful of what I'd call a warm summer day and no really hot summer days. We're the great white north...