Right now in Vancouver, the air is about 68°F, but the model estimates the asphalt under your dog's paws is closer to 71°F — a gap of roughly 3°F, because the pavement is shedding the day's stored heat after dark. That reading puts Vancouver 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.
Only 2 hours of today are left in Vancouver, and the pavement is not expected to climb past about 71°F in that time. The surface is already coming down, about 8°F over the next three hours, so waiting a little works in your favour here.
In an average August, Vancouver sees highs around 84°F and overnight lows near 60°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.
Vancouver 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 August at an average high of 84°F against 46°F in December, a 38°F swing that decides how much of the day belongs to your dog.
Vancouver sits about 8 miles from Portland, OR, 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 Vancouver 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.