Right now in Knoxville, the air is about 66°F, but the model estimates the asphalt under your dog's paws is closer to 69°F — a gap of roughly 3°F, because a mix of sun and cloud is still loading heat into the asphalt. That reading puts Knoxville 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 6 hours left today, the pavement in Knoxville is projected to top out near 69°F around 6 PM, when the air will be about 66°F — a 3°F gap between the forecast your weather app shows and the surface your dog walks on. The surface is already coming down, about 5°F over the next three hours, so waiting a little works in your favour here.
In an average October, Knoxville sees highs around 72°F and overnight lows near 52°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.
Knoxville 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 city we track is East Chattanooga, roughly 97 miles from Knoxville — far enough that its reading is no substitute for this one. Sun angle, humidity and cloud cover can all differ across that distance, which is why this page models Knoxville on its own coordinates.
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 Knoxville 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.