I usually walk to get my kids from school on my days off. I was wondering at what point do you think it is too hot for him to walk? It's only a few blocks from the house. I'm just worried about him over heating.
If it's not too hot for you or your kids, it won't be too hot for your dog. Your main concern would be with regards to 'surface' heat. If the side walk or pavement is too hot it could burn your dog's pads. If the dog can walk on grass, it shouldn't have a problem.