30/06/2026
Good to know…💞 🐶
Before reaching for the leash, have the two leggers do some math to decide if conditions are truly safe to head out for a walk. By calculating the invisible impact of humidity alongside the outdoor temperature, you can ensure your four leggers stay safely clear of the heat danger zone.
The 150 Rule: Is It Safe to Exercise Your Dog Today?
Ever look outside on a hot day and wonder, "Is it too hot to take my dog for a walk?" It turns out, checking the temperature on your phone is only telling you half the story. To truly know if your dog is safe from heatstroke, you need to use The 150 Rule.
Here is what every pet parent needs to know to keep their furry best friend safe this summer.
What is The 150 Rule?
- Dogs don’t sweat like humans; they rely on panting to cool down. - When the air is full of moisture (high humidity), their panting becomes much less effective.
- The 150 Rule is a quick veterinary guideline that combines both factors to give you an accurate heat safety score.
The Math:
Take the current temperature in Fahrenheit and add the Relative Humidity percentage.
Temperature (°F) + Humidity (%) = Your Pet’s Heat Score
Checking the Score: Safe vs. Danger Zones
Once you add those two numbers together, see where your score lands on the chart:
- Under 130 🟢 Safe! Your dog's natural cooling mechanisms will work perfectly. Enjoy your walk or run.
- 130 to 150 🟡 Caution: Exercise with caution. Your dog will heat up faster than usual. Shorten your route, slow the pace, walk in the shade, and bring plenty of water.
- Over 150 🔴 Danger Zone: Skip the workout. At this level, high humidity prevents sweat and panting moisture from evaporating. Your dog cannot cool itself down, skyrocketing the risk of heat exhaustion.
- Over 180 ⚫ Fatal Zon: Strictly indoor time. Even hanging out in the backyard can be dangerous.
The "Hidden" Rule Exceptions
Even if your score is under 150, veterinarians recommend skipping the heavy exercise if:
1. The humidity is doing the heavy lifting. (For example: 70°F + 75% humidity = 145. Even though it's under 150, that high humidity makes it tough to breathe and cool down).
2. Your dog is flat-faced (Brachycephalic). Pugs, Bulldogs, and Boxers have shorter airways and should never be exercised in high heat.
3. Your dog is senior, puppies, or overweight. See less
