Here is a great article from shreveporttimes.com that summarizes the steps you can take to ensure that your dog does not get overheated while outside:
The first way to protect your dog is by eliminating extraneous outdoor exercise when the sun is at its zenith. And be advised that hot concrete exacerbates heat distress, because besides panting, dogs dissipate heat from the pads of their feet. If it’s too hot for the palm of your hand, it’s too hot for your dog’s tootsies. Do NOT leave your dog in a hot car, and if you SEE a dog in a parked car, report it to law enforcement. You may save a life.
If you can’t bring your pooch indoors during the hottest part of the day, at least make sure he has a cool place on the shady side of the house. Unshaded, concrete kennels literally are a killer in the summer time. Make sure he has plenty of cool water. If your pet is an “outdoor dog,” an excellent way to insure a fresh water supply is with a Lixsit dog watering device attached to your faucet. This allows your dog to get fresh water at will.
Click here for the full article and more safety tips. One thing that I noticed is how hot the concrete can get outside. We humans wouldn’t notice it but if you imagine your dog’s paws touching the pavement, it would seem to be very uncomfortable. Be safe out there!