Archived Clear Sky Chart Images
for Heartwood Observatory, (ON)

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.

October
Mon	Tue	Wed	Thu	Fri	Sat	Sun
					11 13:00	12 05:00 13:00 +1 chart from previous days
13 05:00 13:00 +3 charts from previous days	14 01:00 13:00 +5 charts from previous days	15 01:00 17:00 +7 charts from previous days	16 01:00 13:00 +9 charts from previous days	17 01:00 17:00 +11 charts from previous days	18 01:00 13:00 +13 charts from previous days	19 01:00 13:00 +14 charts from previous days
20 05:00 12:00 +14 charts from previous days	21 01:00 17:00 +14 charts from previous days	22 05:00 13:00 +14 charts from previous days	23 01:00 13:00 +14 charts from previous days	24 05:00 13:00 +14 charts from previous days	25 01:00 06:00 13:00 +14 charts from previous days	26 01:00 13:00 +15 charts from previous days
27 05:00 12:00 13:00 +15 charts from previous days	28 01:00 12:00 13:00 +16 charts from previous days	29 01:00 17:00 +17 charts from previous days	30 05:00 12:00 +17 charts from previous days	31 05:00 13:00 +17 charts from previous days
November
Mon	Tue	Wed	Thu	Fri	Sat	Sun
					1 01:00 17:00 +17 charts from previous days	2 01:00 12:00 +16 charts from previous days
3 04:00 16:00 +16 charts from previous days	4 00:00 11:00 +15 charts from previous days	5 00:00 12:00 +14 charts from previous days	6 00:00 12:00 +14 charts from previous days	7 04:00 11:00 +14 charts from previous days	8 04:00 12:00 +14 charts from previous days	9 04:00 11:00 +14 charts from previous days
10 04:00 +14 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.