I've been using The Clear Sky Chart to predict cloudy conditions. There is an hourly "Seeing" rating corresponding to the cloud-cover forecasts. https://www.cl

I've been using The Clear Sky Chart to predict cloudy conditions. There is an hourly "Seeing" rating corresponding to the cloud-cover forecasts. https://www.cleardarksky.com/csk/ https://www.cleardarksky.com/csk/