If the humidity is really high, consider that a bad running condition and DON’T GO. This is why I recommend in a high humidity running situation you slow down, you drink water, you keep an eye on your heart rate and you freakin stop if your feeling light headed or like your going to pass out. A higher humidity will prevent sweat from evaporating, and makes your heart and lungs work harder to cool you off. Humidity plays a role in how your body behaves as you run. Now, I admit that I have never seen this idea before, and I am interested in exploring it more for another post. Lower temps covert your body’s fuel from less fat consumption to more carb consumption…your glycogen stores. With the temperature, they say higher temps use more energy to cool you down and you’ll lose fluids quicker. In the app, the index tells you why they come to the conclusions of whether it is a good time to run or not. I dress differently for a 40° run with over-head clouds and a chance of rain with a real feel of 32°, vs a 40° day with no wind and sunshine. The predictions can help you with your clothing choices as well. If you are flexible with your running days, you can switch runs around if you need to squeeze a shorter one between rain or switch to a different day all together. You can look at the predictions for tomorrow and for the next week. The index is based on temperature, humidity, precipitation- whether it will rain or snow and the wind. Scroll down from that and you’ll see the science behind the numbers. When you click on the arrow, you’ll see an hour by hour prediction of whether it will be a good time for a run. Once you’ve downloaded the App, scroll down to the Health and Activities section and you’ll see Running. It’s a scale from 1-10…the higher the number the better the running conditions. The Weather Channel has an App that has a GORun index. If it’s snowing, but not a blizzard I have no trouble getting out of bed. Since I live in Buffalo, NY and run a lot of my runs early in the morning, I rely on the Weather Channel app to tell me if I should roll out of bed or snuggle under the covers. Did you know the Weather Channel App has a setting to tell you whether its a good time for a run? They call this the “Run Score”.

Weather channel radar