Right now in Columbus, the air is about 61°F, but the model estimates the asphalt under your dog's paws is closer to 61°F — the surface and air have nearly converged because the pavement is shedding the day's stored heat after dark. That reading puts Columbus 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 18 hours left today, the pavement in Columbus is projected to top out near 122°F around 2 PM, when the air will be about 73°F — a 49°F gap between the forecast your weather app shows and the surface your dog walks on. Today breaks into 2 separate safe stretches rather than one continuous window, so missing the first does not cost you the day.
In an average August, Columbus sees highs around 84°F and overnight lows near 65°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 11:00 AM and after about 4:00 PM.
Columbus loses its all-day safe window in 3 months of the year — June through August — and August is one of them. The year peaks in July at an average high of 85°F against 39°F in January, a 46°F swing that decides how much of the day belongs to your dog.
The nearest city we track is Dayton, roughly 65 miles from Columbus — 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 Columbus 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 Columbus 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.