Working on the ramp, we kinda get experience in this all the time. Driving behind a 737 as it's powering up to taxi is a BAD thing. I saw one ramper at BWI drive behind one (at a 'safe' distance if that exists), and most of the bags on the cart he was pulling went flying, along with his hat.
As far as the temperature, from about 50-80 yards away it kinda feels like a hot breeze in Arizona, but maybe a little more windy. There's a certain other airline that likes to block our planes in right before we pushback. It's kinda gratifying to turn the engines toward their gate and blow over all the pretty cones they set up to keep us out of their area....