I spent a few minutes researching the effect of temperature, humidity and dew point yesterday. I've been curious about the effects of these three thing but never really realized how they worked together to make it so unpleasant to run sometimes. I found this article that describes the effects fairly simply and accurately.
I feel like I now understand why our central Texas weather is so uncomfortable to run in at times. I am going to start tracking Dew Point so I might hopefully understand why some training runs seem so much harder than others. I might be able to adjust my training based on the findings.
A good example of the Dew Point effects was today's run. The Dew Point just happened to be 72. I suspect this is going to be a common reading for most of my morning runs. As you can see from the chart below (taken from the above article) you can "expect pace to suffer greatly". Not that this information changes anything but at least it can give me a little peace of mind that I've just not lost everything and should throw in the towel!
I went and looked at the Temperature, Humidity and Dew point of several locations across the country to compare to this mornings run. Here they are:
Billing 56 degrees, 66% Humidity, Dew Point 45
Ammon 57 degrees, 77% Humidity, Dew Point 50
Lakewood 51 degrees, 94% Humidity, Dew Point 50
Cypress 82 degrees, 88% humidity, Dew Point 78 (Sorry Flat!)
Tacoma 55 degrees, 89% Humidity, Dew Point 52
Preston 60 degrees, 64% Humidity, Dew Point 48
Ohio 68 degrees, 64% humidity, Dew Point 55
OK City 72 degrees 88% humidity, Dew Point 68 (but raining and flash flood conditions)
An intelligent heart acquires knowledge, and the ear of the wise seeks knowledge.
Oh, I forgot to talk about my run. I ran my small loop + a little to complete 7 miles. Each mile I would speed up to a 5:30 pace (about .10 mile) twice during the mile then slow back down and catch my breath and cool down. Overall average Pace was 8:23.