This page describes a script that provides a 'day view' of a given metric over several days.
As each parameter is shown, if the plot lines vary widely then the weather is possibly unsettled. Use this to determine if the location and metric is 'stable' with the recent (closest) days shown in colour.
What you are looking for is to see if the coloured lines are fairly similar. If they vary or are very different, that suggests the forecast is changeable. That may not mean poor conditions, it's just that the forecasts have been changeable so the conditions are changeable.