I've looked at a few apps for checking wind strength. One of the better ones I discovered was "Wind Meter" by Going Apps. There is a cost... In Australia it's $1.49, but to you people fortunate enough to be in the USA, it'll work out to less than a dollar I believe. That, when our exchange rate is 1 Australian $ equaling about US75c... You do the math, and who's getting ripped off? Anyway, it's a worthwhile app if you want to check it out.