I like the colour system of the wind arrows.
I always know what day it is just by looking at the graphs.
Red arrows are for today's wind
Yellow arrows are for tomorrow and the next day's wind
Green arrows are for anything more than 3 days away
Why worry with things like Monday, Tuesday and Saturday. They change everyday - I can never keep up with what day it is.
Keep it simple with red meaning today, yellow meaning tomorrow and green meaning end of the week.
I think green might also mean yesterday.
Have a good red.