It’s hot outside in Arizona. I mean, it’s hot virtually everywhere, to be fair. We’re at the very beginning of an extreme heat advisory that lasts from yesterday (July 23, 2018) morning all the way through Wednesday night. It’s dangerously hot.1 Keep in mind it’s actually hotter today than it was yesterday. Today it’s a high of 112F (44.4C). The images you’ll find below were taken on a day with a high of 109F (42.7C).
Now, you know about our dogs and how much we love them. (Read: spoil.) Considering the excessive heat warning, I began wondering just how hot the back yard gets during the day. I know the general numbers but what about in our actual back yard where our actual dogs actually walk around, actually?
I wanted to demonstrate what I talked about back in my Thermoception episode of The New Professor2: the difference between ambient air temperature and the temperature of the pavement. This is especially important for animals.
Recently having procured an infrared thermometer to use when cooking, it occurred to me I could use it to really illustrate these dangers. These are taken in the same spots throughout the day. You’ll see when and how the shade from the house alters the temperature. Please, think about this when you want to take your dogs out.
While it’s not a perfect analog, consider these water temperatures and time required for “deep burn.”3
Below each picture and accompanying temperature is a description of a relative internal cooking temperature4 for comparison.
Gravel at 11am:
Patio at 11am:
Gravel at 12pm:
Patio at 12pm:
Gravel at 1pm:
Patio at 1pm:
Gravel at 2:30pm:
Patio at 2:30pm:
Gravel at 3:30pm:
Patio at 3:30pm:
Just so you can see how quickly it cools down after the sun stops beating down on it.
Patio at 7:30pm: