Archived Clear Sky Chart Images
for Robert Ferguson Observatory, (CA)

A Sponsored Feature

Each day lists the local time, hh:mm in 24h time, that is the starting hour of a past clear sky chart. Each clear sky chart forecasts a few days into the future. There are at least two clear sky chart updates per day. So there are multiple overlapping forecasts for each day.

April
Mon	Tue	Wed	Thu	Fri	Sat	Sun
		3 11:00 21:00	4 11:00 21:00 +2 charts from previous days	5 21:00 +4 charts from previous days	6 09:00 21:00 +5 charts from previous days	7 21:00 +7 charts from previous days
8 09:00 22:00 +8 charts from previous days	9 09:00 22:00 23:00 +10 charts from previous days	10 09:00 22:00 +13 charts from previous days	11 09:00 +14 charts from previous days	12 03:00 10:00 21:00 +13 charts from previous days	13 09:00 21:00 +15 charts from previous days	14 15:00 21:00 +15 charts from previous days
15 15:00 +16 charts from previous days	16 +15 charts from previous days

Instead of the last few past clear sky chart images, some people prefer long-term averages of forecasts. See the Forecast History/Climate page.