When walking, try to keep your pup off hot surfaces, like asphalt, because it can burn your dogs paws. If it is too hot for your hands, then it is too hot for your dogs paws.
Try to take walks during the cooler hours of the day. If your dog has a lot of fur or a flat face, it is better to walk them around sunrise, sunset, or even after sunset. Dogs with flat faces have a harder time breathing and they can overheat faster, as well as dogs with more fur will overheat faster.
Do not leave your dog unsupervised around pools. Depending on the type of pools, salt water or chlorine, both are not good for your dog to drink. Salt water can dehydrate your dog. Chlorine and pool chemicals need to be washed off your dogs when leaving the pool and do not let them drink it!
Symptoms to look out for with overheating, this includes excessive panting or difficulty breathing, increased heart and respiratory rate, drooling, mild weakness, or even collapse. Symptoms can also include seizures, diarrhea, and vomit along with an elevated body temperature of over 104 degrees.