Clear Sky Chart

If the rows for Cloud Cover, Transparency, Darkness, and Wind are all darker shades of blue, it’s a good night! In general, dark blue is a good thing. For more detail on how to read the chart, look here.

If it’s raining, snowing, high winds (>25 mph), or otherwise bad weather, do not open the observatory.┬áThe stars will still be there when you come back.