In running, this point is most important

With all dew respect

Today's run (street): 3.5 miles

People always say "It's not the heat, it's the humidity." In fact, it's really the dew point that determines the level of comfort (or discomfort) in hot weather. Before I went out for my run this morning, I checked weather.com which reported a temperature of 66° and humidity at 91%. "Ugh", I thought. "It's going to be just like Tuesday, when you could literally feel the moisture in the air." But then I checked the dew point and saw it was 61. That meant 66° would feel like 64°.

That changed my attitude and I got out the door in record time. It felt pleasant and slightly cool, with a mild breeze coming from the north. I took off feeling fortunate to have dodged what I expected to be sticky, hot weather. I guessed that the 91% humidity related to the cloudy skies that looked mildly threatening. I ran with a little rain yesterday and I was willing to risk it today.

As it turned out, the rain held off, but I could smell its aroma mixed with the scent of sugar maple. That combination followed me throughout the entire route. I threw in a little speed in the second half and ended up having a very satisfying run. A low dew point was all it took.