Right now in Yonkers, the air is about 76°F, but the model estimates the asphalt under your dog's paws is closer to 101°F — a gap of roughly 25°F, because heavy cloud cover is taking some of the edge off the direct sun. That reading puts Yonkers 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 10 hours left today, the pavement in Yonkers is projected to top out near 101°F around 2 PM, when the air will be about 76°F — a 25°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 August, Yonkers sees highs around 83°F and overnight lows near 67°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.
Yonkers 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 86°F against 40°F in January, a 45°F swing that decides how much of the day belongs to your dog.
Yonkers sits about 6 miles from The Bronx, close enough that the two usually run within a degree or two of each other — if your walk crosses between them, either page answers the question. Street-level conditions still differ more than city-level ones do: a shaded side street and an open parking lot half a block apart can be twenty degrees apart underfoot.
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 Yonkers 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.