Right now in South Fulton, the air is about 81°F, but the model estimates the asphalt under your dog's paws is closer to 114°F — a gap of roughly 33°F, because clear skies are pouring full sun onto every dark surface. That reading puts South Fulton in the caution range, where short, shade-hugging walks are the most a paw should take. Humidity is nudging the human "feels-like" to about 84°F, which matters for your dog too: muggy air makes it harder for a panting dog to shed heat, so treat a borderline reading as the hotter of the two.
Across the 13 hours left today, the pavement in South Fulton is projected to top out near 138°F around 2 PM, when the air will be about 88°F — a 50°F gap between the forecast your weather app shows and the surface your dog walks on. The surface is still gaining — up about 24°F over the next three hours — so a walk taken now is cooler than the same walk later this afternoon.
In an average August, South Fulton sees highs around 88°F and overnight lows near 70°F. Even at those moderate highs, a dark surface in direct sun can run 40–60°F hotter than the air, which is enough to tip midday walks into the caution range. As a seasonal rule of thumb, the safest windows are before about 10:00 AM and after about 5:00 PM.
South Fulton loses its all-day safe window in 5 months of the year — May through September — and August is one of them. The year peaks in July at an average high of 88°F against 54°F in January, a 34°F swing that decides how much of the day belongs to your dog.
The nearest place we track is Atlanta, about 20 miles away. That is close enough to move together in a heat wave but far enough that a passing cloud bank or a coastal breeze can put real distance between the two readings, so check South Fulton's own page rather than assuming.
Whatever the number says, confirm it with your hand: press the back of it flat on the pavement for seven seconds. If you can't hold it there, neither can your dog. On a day reading this warm in South Fulton, flat-faced breeds like pugs and bulldogs, plus seniors and young puppies with thinner pads, should sit out the heat entirely — subtract about 10°F from any safe threshold for them. If you must cross hot ground, protective booties or a quick coat of paw wax are the only real barrier between paw pads and the asphalt.