Right now in Nashville, the air is about 63°F, but the model estimates the asphalt under your dog's paws is closer to 65°F — a gap of roughly 2°F, because heavy cloud cover is taking some of the edge off the direct sun. That reading puts Nashville in the clear for an ordinary walk. Air temperature alone would have told you none of this — the pavement, not the forecast, is what your dog actually stands on.
Across the 9 hours left today, the pavement in Nashville is projected to top out near 67°F around 7 PM, when the air will be about 62°F — a 5°F gap between the forecast your weather app shows and the surface your dog walks on. The surface is holding roughly flat over the next three hours, so there is no meaningfully cooler hour coming soon — choose shade and grass rather than waiting it out.
In an average October, Nashville sees highs around 73°F and overnight lows near 53°F. Those are forgiving numbers, but don't let them lull you — a sunny, still afternoon can still heat dark asphalt far above the air, especially for low-riding or short-coated dogs. For this month the normals suggest pavement rarely reaches unsafe temperatures here, but the seven-second hand test is still the final word on any given day.
Nashville loses its all-day safe window in 5 months of the year — May through September — and October is not one of them. The year peaks in July at an average high of 89°F against 48°F in January, a 41°F swing that decides how much of the day belongs to your dog.
The nearest place we track is Murfreesboro, about 31 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 Nashville'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. Conditions in Nashville are on the gentler side right now, but keep the same habits: water before and after, grass over asphalt, and a close eye on flat-faced breeds, seniors, and puppies, who overheat and burn sooner than a healthy adult dog.