There are lots of metrics within a myWindsock forecast. Here are some of the key metrics that will help you understand the weather conditions.

Aerodynamics (CdA)

This is your efficiency moving through air. myWindsock generates this number when power meter data is present. Discover more about CDA here.

Air Speed

This is the speed the air is moving around the cyclist. This takes into acount the wind and cyclist bearing, and the wind speed when adjusted for wind shear.

Air Penalty

The difference between the amount of air you have passed through and the distance you’ve ridden along the ground is your air penalty. More information can be found on the ‘Air Penalty Chart‘.

Air Distance

The distance of air calculate by Air Speed at time exposed. Tail winds will produce a lower Air Distance than Ground. A headwind will produce a greater Air Distance than Ground Distance.

Feels Like Elevation™

An artificial elevation profile quantifying wind resistance as elevation gain. Find out more.

Weather Impact™ (wImpact)

On a windy day, you will likely find that your bike ride is slower than it would be on a calm day. wImpact calculates exactly how much slower (or faster) a completely calm day would be. A more detailed description can be found here.

Wind Adjusted Time™

Using AI models, this is the time that the activity would have taken had wind speed been zero. Another way to think of this is the cost of the wind in time.