Pressure prediction analysis

Previously, I analysed how accurate various weather prediction services predicted the temperature a number of days in advance. Today I will look at their predictions for wind speed.

Here is the summary data

Here is a chart of the data for people who prefer visual:

Points to note

• Openweathermap seems to be the most accurate by far.
• Yr.no has similar accuracy openweathermap for one day in advance, but when predicting further into the future both darksky and yr.no are similar.
• The error from openweathermap seems to be much larger than other services. I checked and this error is genuine.

Like the last time, this analysis lumps all cities together for an average result. I might do some analysis later on performance per city.