Right now in Greeley, the air is about 80°F, but the model estimates the asphalt under your dog's paws is closer to 89°F — a gap of roughly 9°F, because heavy cloud cover is taking some of the edge off the direct sun. That reading puts Greeley 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 7 hours left today, the pavement in Greeley is projected to top out near 89°F around 5 PM, when the air will be about 80°F — a 9°F gap between the forecast your weather app shows and the surface your dog walks on. The surface is already coming down, about 14°F over the next three hours, so waiting a little works in your favour here.
In an average October, Greeley sees highs around 66°F and overnight lows near 37°F. That keeps most of the day walkable, though a rare clear, calm afternoon can still warm exposed pavement more than the mild air suggests. 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.
Greeley 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 91°F against 41°F in January, a 49°F swing that decides how much of the day belongs to your dog.
The nearest place we track is Fort Collins, about 23 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 Greeley'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 Greeley 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.