Kangiqsujuaq
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kangiqsujuaq clear sky chart from 2005-11-06 to 2024-01-16.

This page is a summary of past forecasts. Even though it's based only on forecasts, some people use these pages as clue to a site's climate. But climate data based on actual observation should be preferred (if you can find it!).

Cloud, Transparency and Seeing forecasts are summarized individually. But because good observing conditions require a combination of minimum cloud cover, transparency and seeing, the individual forecast summaries can be difficult to interpret. The observing conditions section counts the combinations of conditions needed for common types of astronomical observation.

Observing Conditions

The following tables count the occurrence of the combinations of forecast and darkness conditions needed for different observations. Conditions are rated by by what percentage of the hours the observation would likely be attempted are usable.

Observation Type	Minimum conditions for hour to be usable				Out of hours
	Clear of Clouds	Transparency	Seeing	Sky Brightness
Planetary:	50%	(no limit)	Average	(no limit)	Nighttime Hours
Deep Sky:	70%	Average	(no limit)	5.9	Nighttime Hours
CCD Imaging:	70%	Below Average	Poor	(no limit)	Nighttime Hours

Percentages are of nighttime hours per month, or per year, when a particular observing conditions was met. Deep Sky percentages never exceed 50% because the moon is up half the time. Deep sky percentages are much lower for charts at high latitudes because of fewer dark hours in the summer.

Overall

By Month

Individual Forecasts

The length of each colored bar in the "occurrence of each Forecast" column is proportional to the number of times the chart forecast that color. The percentages are of the total number of hours per month, or per year, with a particular forecast. The colors as the same as those used in clear sky charts.

Note: Transparency probabilities are only counted for those hours that have 30% or less cloud cover. Seeing probabilities are only counted for those hours that have 80% or less cloud cover. If that's too tricky, try Observing Conditions instead.

Overall

		Occurrence of each Forecast	Data Points
Cloud Cover	Day	15% 13% 6% 10% 8% 4 6% 5% 5% 6% 22%	74405
	Night	10% 11% 6% 10% 9% 5% 7% 6% 6% 7% 23%	75416
Transparency	Day	60% 10% 13% 13% 4	74040
	Night	58% 9% 14% 14% 4	75317
Seeing	Day	20% 5% 17% 27% 21% 9%	16204
	Night	15% 5% 17% 29% 24% 9%	23757

By Month

Percentage Cloud Cover NE (2006-)
Color Meanings: Overcast 90% covered 80% covered 70% covered 60% covered 50% covered 40% covered 30% covered 20% covered 10% covered Clear
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	2 8% 7% 10% 11% 8% 10% 8% 5% 7% 24%	759
	11th to 20th	Day	2 7% 5% 8% 12% 11% 12% 6% 6% 6% 25%	972
	21st to end	Day	3 8% 5% 10% 11% 7% 10% 7% 7% 7% 25%	1188
February	1st to 10th	Day	1 8% 5% 12% 10% 6% 9% 10% 8% 9% 21%	1225
	11th to 20th	Day	2 5% 3 10% 9% 7% 11% 7% 10% 7% 28%	1398
	21st to end	Day	3 5% 2 7% 9% 6% 14% 10% 11% 9% 26%	1246
March	1st to 10th	Day	3 9% 6% 10% 11% 7% 9% 9% 9% 8% 20%	1797
	11th to 20th	Day	4 9% 5% 8% 9% 5% 8% 9% 7% 8% 29%	1844
	21st to end	Day	4 9% 6% 12% 9% 5% 9% 7% 7% 6% 26%	2371
April	1st to 10th	Day	7% 15% 6% 11% 9% 6% 7% 5% 5% 5% 24%	2245
	11th to 20th	Day	4 8% 6% 11% 12% 6% 9% 6% 5% 7% 26%	2451
	21st to end	Day	14% 17% 8% 12% 7% 5% 5% 4 4 6% 19%	2618
May	1st to 10th	Day	15% 18% 8% 14% 10% 4 5% 4 4 5% 14%	2777
	11th to 20th	Day	12% 16% 9% 14% 8% 3 5% 4 4 5% 19%	2900
	21st to end	Day	10% 17% 10% 15% 8% 4 5% 4 4 6% 15%	3321
June	1st to 10th	Day	19% 16% 8% 10% 6% 3 4 4 4 6% 22%	3240
	11th to 20th	Day	14% 12% 4 9% 6% 3 5% 4 5% 7% 31%	3240
	21st to end	Day	18% 10% 3 6% 6% 4 4 5% 5% 7% 33%	3240
July	1st to 10th	Day	25% 10% 4 6% 6% 3 4 4 5% 6% 27%	3240
	11th to 20th	Day	25% 12% 4 7% 6% 4 4 4 5% 6% 23%	3182
	21st to end	Day	25% 11% 3 5% 4 2 4 4 5% 7% 28%	3169
August	1st to 10th	Day	25% 14% 4 7% 6% 3 5% 5% 5% 6% 20%	2857
	11th to 20th	Day	26% 11% 3 7% 6% 2 4 4 5% 6% 25%	2561
	21st to end	Day	23% 14% 4 8% 7% 4 5% 5% 5% 7% 19%	2724
September	1st to 10th	Day	23% 16% 5% 9% 6% 4 4 5% 5% 5% 18%	2285
	11th to 20th	Day	21% 21% 6% 10% 7% 4 5% 4 3 4 15%	2090
	21st to end	Day	22% 24% 8% 8% 6% 3 4 4 4 5% 12%	1980
October	1st to 10th	Day	24% 19% 8% 8% 7% 4 4 4 4 6% 13%	1717
	11th to 20th	Day	16% 19% 10% 12% 7% 4 4 4 4 5% 15%	1620
	21st to end	Day	12% 18% 6% 12% 8% 4 5% 4 6% 7% 18%	1517
November	1st to 10th	Day	7% 16% 10% 15% 6% 3 5% 4 6% 6% 21%	1300
	11th to 20th	Day	9% 15% 5% 13% 9% 4 6% 6% 6% 6% 22%	1105
	21st to end	Day	7% 11% 6% 12% 11% 3 6% 5% 7% 7% 25%	950
December	1st to 10th	Day	5% 7% 6% 9% 12% 7% 7% 6% 5% 5% 32%	908
	11th to 20th	Day	4 9% 4 9% 14% 6% 7% 6% 6% 8% 27%	960
	21st to end	Day	2 11% 8% 13% 9% 6% 8% 9% 6% 7% 22%	1408
January	1st to 10th	Night	3 8% 5% 10% 12% 6% 9% 8% 7% 7% 24%	3406
	11th to 20th	Night	3 8% 5% 8% 10% 10% 12% 9% 6% 6% 25%	3107
	21st to end	Night	2 7% 6% 11% 10% 7% 9% 8% 7% 8% 25%	3168
February	1st to 10th	Night	2 7% 8% 11% 10% 6% 11% 10% 9% 8% 19%	2732
	11th to 20th	Night	2 6% 4 8% 11% 6% 11% 10% 9% 9% 24%	2448
	21st to end	Night	1 6% 5% 10% 7% 5% 11% 11% 12% 9% 23%	2006
March	1st to 10th	Night	3 7% 5% 10% 11% 7% 9% 9% 8% 8% 22%	2150
	11th to 20th	Night	4 8% 6% 7% 10% 5% 8% 8% 8% 8% 29%	2115
	21st to end	Night	5% 9% 5% 10% 9% 4 8% 7% 7% 8% 27%	1984
April	1st to 10th	Night	8% 13% 7% 10% 8% 4 7% 4 5% 7% 27%	1715
	11th to 20th	Night	5% 9% 4 9% 11% 6% 6% 6% 5% 8% 31%	1474
	21st to end	Night	13% 18% 5% 11% 7% 3 4 4 5% 5% 25%	1342
May	1st to 10th	Night	16% 18% 6% 11% 9% 3 4 5% 4 5% 21%	1180
	11th to 20th	Night	15% 16% 7% 13% 7% 4 5% 4 5% 5% 18%	995
	21st to end	Night	12% 14% 11% 14% 7% 2 4 3 4 6% 23%	952
June	1st to 10th	Night	18% 18% 8% 8% 6% 3 6% 3 4 5% 22%	720
	11th to 20th	Night	12% 14% 5% 8% 3 2 4 5% 5% 6% 35%	720
	21st to end	Night	19% 8% 4 6% 5% 3 3 4 6% 7% 36%	720
July	1st to 10th	Night	26% 10% 3 7% 6% 3 4 4 4 6% 26%	720
	11th to 20th	Night	23% 10% 3 6% 5% 3 4 7% 5% 5% 27%	777
	21st to end	Night	25% 12% 5% 6% 4 2 4 3 6% 8% 25%	1146
August	1st to 10th	Night	30% 15% 4 7% 6% 3 4 5% 4 4 17%	1082
	11th to 20th	Night	27% 11% 4 5% 5% 2 3 5% 4 6% 26%	1340
	21st to end	Night	25% 12% 5% 6% 5% 2 5% 4 5% 7% 23%	1613
September	1st to 10th	Night	23% 13% 5% 7% 6% 3 4 4 5% 5% 26%	1674
	11th to 20th	Night	17% 17% 7% 10% 7% 3 5% 4 5% 6% 18%	1870
	21st to end	Night	23% 21% 6% 8% 7% 3 5% 3 5% 5% 13%	1980
October	1st to 10th	Night	28% 18% 8% 9% 6% 3 4 4 4 5% 12%	2240
	11th to 20th	Night	17% 19% 7% 13% 7% 3 5% 4 4 4 16%	2340
	21st to end	Night	16% 17% 8% 11% 6% 4 5% 4 4 6% 20%	2837
November	1st to 10th	Night	8% 15% 8% 16% 8% 4 5% 5% 5% 6% 20%	2778
	11th to 20th	Night	10% 15% 6% 15% 9% 4 5% 4 5% 6% 21%	3071
	21st to end	Night	6% 12% 6% 11% 10% 4 7% 5% 6% 7% 25%	3230
December	1st to 10th	Night	4 9% 5% 10% 12% 6% 6% 6% 6% 8% 27%	3272
	11th to 20th	Night	5% 8% 5% 11% 12% 6% 7% 6% 7% 7% 27%	4242
	21st to end	Night	4 8% 6% 14% 11% 6% 8% 6% 6% 7% 25%	6270

Transparency (when cloud cover <= 30%)
Color Meanings: Too cloudy to forecast Poor Below Average Average Above average Transparent
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	57% 10% 13% 16% 4	760
	11th to 20th	Day	57% 8% 13% 17% 4	972
	21st to end	Day	55% 6% 14% 16% 9%	1188
February	1st to 10th	Day	54% 11% 16% 13% 7%	1225
	11th to 20th	Day	49% 9% 17% 20% 5%	1406
	21st to end	Day	46% 10% 14% 17% 12% 1	1246
March	1st to 10th	Day	55% 11% 15% 11% 8%	1800
	11th to 20th	Day	47% 9% 14% 20% 10%	1844
	21st to end	Day	55% 8% 12% 17% 7% 1	2371
April	1st to 10th	Day	59% 7% 11% 13% 9% 1	2245
	11th to 20th	Day	54% 8% 13% 17% 6% 1	2451
	21st to end	Day	66% 6% 9% 13% 5%	2618
May	1st to 10th	Day	71% 7% 10% 9% 3	2777
	11th to 20th	Day	65% 8% 12% 12% 3	2904
	21st to end	Day	69% 9% 11% 8% 3	3321
June	1st to 10th	Day	64% 6% 12% 13% 5%	3240
	11th to 20th	Day	52% 9% 15% 20% 4	3240
	21st to end	Day	50% 8% 17% 22% 4	3240
July	1st to 10th	Day	57% 11% 13% 17% 3	3151
	11th to 20th	Day	61% 11% 14% 12% 1	3083
	21st to end	Day	53% 11% 19% 15% 1	2993
August	1st to 10th	Day	63% 14% 13% 9% 1	2840
	11th to 20th	Day	59% 10% 15% 14% 2	2561
	21st to end	Day	63% 13% 14% 9% 1	2724
September	1st to 10th	Day	66% 10% 11% 11% 1	2285
	11th to 20th	Day	72% 9% 11% 7% 1	2090
	21st to end	Day	74% 10% 9% 6% 2	1980
October	1st to 10th	Day	74% 8% 9% 8% 1	1717
	11th to 20th	Day	72% 8% 10% 8% 2	1620
	21st to end	Day	64% 12% 14% 7% 3	1517
November	1st to 10th	Day	64% 9% 14% 11% 2	1300
	11th to 20th	Day	61% 13% 13% 11% 1	1105
	21st to end	Day	56% 13% 14% 14% 4	950
December	1st to 10th	Day	53% 10% 17% 15% 5%	908
	11th to 20th	Day	53% 12% 12% 20% 3	960
	21st to end	Day	58% 8% 15% 15% 3	1408
January	1st to 10th	Night	55% 11% 14% 16% 4	3406
	11th to 20th	Night	57% 9% 14% 16% 4	3107
	21st to end	Night	53% 9% 15% 17% 7%	3168
February	1st to 10th	Night	57% 9% 14% 15% 6%	2732
	11th to 20th	Night	51% 9% 17% 17% 5%	2451
	21st to end	Night	46% 11% 17% 14% 11% 1	2006
March	1st to 10th	Night	54% 12% 14% 13% 6%	2160
	11th to 20th	Night	48% 9% 15% 19% 8%	2116
	21st to end	Night	51% 9% 13% 18% 9%	1984
April	1st to 10th	Night	55% 5% 11% 17% 10% 2	1715
	11th to 20th	Night	51% 7% 14% 20% 7% 1	1474
	21st to end	Night	61% 7% 10% 13% 8%	1342
May	1st to 10th	Night	66% 7% 10% 13% 4	1180
	11th to 20th	Night	66% 9% 10% 13% 2	996
	21st to end	Night	64% 7% 11% 13% 4 1	953
June	1st to 10th	Night	65% 6% 11% 12% 5%	720
	11th to 20th	Night	49% 8% 14% 24% 5%	720
	21st to end	Night	47% 6% 15% 27% 4	720
July	1st to 10th	Night	60% 8% 10% 18% 4	700
	11th to 20th	Night	58% 9% 16% 15% 1	753
	21st to end	Night	56% 10% 17% 15% 2	1082
August	1st to 10th	Night	68% 11% 13% 7% 1	1075
	11th to 20th	Night	57% 11% 18% 13% 2	1340
	21st to end	Night	60% 10% 16% 12% 1	1613
September	1st to 10th	Night	61% 9% 13% 14% 3	1674
	11th to 20th	Night	66% 11% 13% 9% 1	1870
	21st to end	Night	73% 9% 11% 7% 1	1980
October	1st to 10th	Night	76% 7% 8% 6% 2	2240
	11th to 20th	Night	73% 7% 11% 7% 3	2340
	21st to end	Night	65% 11% 12% 10% 2	2837
November	1st to 10th	Night	64% 9% 14% 10% 2	2778
	11th to 20th	Night	64% 9% 13% 12% 2	3071
	21st to end	Night	56% 12% 15% 14% 3	3230
December	1st to 10th	Night	54% 11% 18% 13% 5%	3272
	11th to 20th	Night	53% 10% 15% 19% 3	4242
	21st to end	Night	56% 10% 15% 14% 5%	6270

Seeing (when cloud cover <= 80%)
Color Meanings: Too cloudy to forecast Bad 1/5 Poor 2/5 Average 3/5 Good 4/5 Excellent 5/5
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	3 1 13% 43% 24% 16%	180
	11th to 20th	Day	9% 4 21% 42% 18% 6%	170
	21st to end	Day	6% 2 16% 30% 33% 13%	176
February	1st to 10th	Day	4 3 13% 25% 34% 21%	160
	11th to 20th	Day	4 1 10% 31% 38% 18%	160
	21st to end	Day	2 2 9% 34% 37% 17%	174
March	1st to 10th	Day	7% 4 14% 31% 30% 13%	420
	11th to 20th	Day	7% 5% 20% 31% 23% 15%	420
	21st to end	Day	7% 6% 21% 31% 24% 12%	462
April	1st to 10th	Day	13% 5% 18% 31% 20% 12%	420
	11th to 20th	Day	7% 5% 18% 29% 28% 14%	412
	21st to end	Day	19% 7% 22% 31% 14% 6%	518
May	1st to 10th	Day	23% 5% 16% 30% 19% 7%	680
	11th to 20th	Day	20% 5% 19% 27% 19% 9%	802
	21st to end	Day	16% 5% 22% 30% 18% 9%	874
June	1st to 10th	Day	25% 4 16% 25% 21% 8%	810
	11th to 20th	Day	19% 3 12% 27% 25% 13%	810
	21st to end	Day	20% 4 15% 29% 22% 10%	810
July	1st to 10th	Day	27% 4 13% 25% 23% 8%	796
	11th to 20th	Day	29% 4 15% 22% 21% 9%	792
	21st to end	Day	27% 4 14% 20% 25% 11%	881
August	1st to 10th	Day	32% 3 14% 22% 21% 9%	797
	11th to 20th	Day	29% 6% 14% 23% 21% 8%	519
	21st to end	Day	30% 5% 15% 27% 18% 6%	495
September	1st to 10th	Day	26% 7% 21% 21% 17% 7%	450
	11th to 20th	Day	28% 5% 22% 25% 14% 6%	450
	21st to end	Day	30% 9% 20% 24% 15% 2	450
October	1st to 10th	Day	30% 11% 24% 20% 11% 4	403
	11th to 20th	Day	22% 6% 23% 28% 19% 3	360
	21st to end	Day	16% 8% 21% 35% 15% 5%	255
November	1st to 10th	Day	14% 7% 19% 23% 27% 9%	180
	11th to 20th	Day	12% 3 21% 30% 23% 11%	180
	21st to end	Day	6% 6% 27% 32% 18% 12%	180
December	1st to 10th	Day	6% 7% 13% 38% 27% 9%	180
	11th to 20th	Day	13% 5% 20% 32% 23% 7%	180
	21st to end	Day	6% 7% 20% 32% 29% 7%	198
January	1st to 10th	Night	5% 2 15% 30% 29% 18%	1040
	11th to 20th	Night	7% 3 15% 35% 28% 11%	1015
	21st to end	Night	4 4 15% 31% 33% 13%	1078
February	1st to 10th	Night	3 5% 12% 30% 34% 16%	882
	11th to 20th	Night	5% 1 9% 31% 38% 16%	703
	21st to end	Night	3 3 11% 32% 38% 13%	592
March	1st to 10th	Night	5% 3 17% 32% 32% 12%	720
	11th to 20th	Night	7% 4 24% 29% 26% 9%	720
	21st to end	Night	7% 4 18% 34% 27% 11%	792
April	1st to 10th	Night	14% 5% 21% 32% 21% 7%	635
	11th to 20th	Night	7% 5% 14% 39% 27% 8%	410
	21st to end	Night	20% 6% 22% 29% 18% 5%	360
May	1st to 10th	Night	21% 5% 19% 32% 18% 4	360
	11th to 20th	Night	21% 4 19% 29% 21% 6%	354
	21st to end	Night	17% 3 16% 34% 25% 5%	389
June	1st to 10th	Night	26% 4 13% 31% 21% 5%	360
	11th to 20th	Night	17% 3 15% 28% 30% 7%	360
	21st to end	Night	23% 4 11% 32% 25% 5%	360
July	1st to 10th	Night	29% 5% 13% 23% 25% 6%	350
	11th to 20th	Night	27% 5% 11% 26% 25% 7%	348
	21st to end	Night	30% 3 10% 20% 31% 6%	394
August	1st to 10th	Night	39% 4 12% 16% 22% 7%	358
	11th to 20th	Night	32% 6% 12% 21% 23% 7%	356
	21st to end	Night	28% 5% 15% 27% 20% 5%	425
September	1st to 10th	Night	27% 8% 21% 24% 15% 5%	594
	11th to 20th	Night	27% 7% 20% 26% 16% 5%	720
	21st to end	Night	34% 7% 22% 22% 11% 5%	720
October	1st to 10th	Night	35% 9% 20% 21% 11% 3	720
	11th to 20th	Night	28% 7% 15% 27% 20% 3	720
	21st to end	Night	22% 7% 20% 29% 17% 5%	855
November	1st to 10th	Night	17% 5% 22% 28% 21% 7%	830
	11th to 20th	Night	17% 7% 21% 27% 21% 6%	973
	21st to end	Night	10% 7% 23% 29% 21% 10%	1040
December	1st to 10th	Night	8% 4 20% 33% 27% 8%	1040
	11th to 20th	Night	10% 5% 22% 30% 24% 9%	1040
	21st to end	Night	8% 5% 17% 32% 28% 9%	1144

Page generated at 2024-01-13 09:37:56. Version ac07

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