Aqua Fria Peak
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Aqua Fria Peak clear sky chart from 2005-11-06 to 2024-03-18.

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 TypeMinimum conditions for hour to be usableOut of hours
Clear of CloudsTransparencySeeingSky Brightness
Planetary:50%(no limit)Average(no limit)Nighttime Hours
Deep Sky:70%Average(no limit)5.9Nighttime Hours
CCD Imaging:70%Below AveragePoor(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

PlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
Night
37%
24555
28%
80095
12%
24447
53%
24447
33%
39688

By Month

MonthDays of MonthPlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
January1st to 10thNight
28%
930
29%
4313
10%
912
48%
912
23%
1912
January11th to 20thNight
26%
760
27%
4053
14%
740
51%
740
26%
1477
January21st to endNight
27%
828
21%
4302
14%
814
49%
814
22%
1848
February1st to 10thNight
20%
760
29%
2400
8%
760
43%
760
30%
1181
February11th to 20thNight
16%
744
28%
2218
7%
740
38%
740
28%
1140
February21st to endNight
11%
628
35%
1884
4%
628
41%
628
29%
884
March1st to 10thNight
21%
760
31%
2266
7%
760
43%
760
30%
1123
March11th to 20thNight
31%
752
29%
2068
11%
752
44%
752
36%
1105
March21st to endNight
17%
672
33%
2058
6%
672
44%
672
29%
996
April1st to 10thNight
16%
540
32%
1800
7%
540
46%
540
31%
797
April11th to 20thNight
24%
533
30%
1777
11%
533
48%
533
29%
862
April21st to endNight
23%
540
29%
1800
8%
540
51%
540
30%
860
May1st to 10thNight
31%
540
28%
1800
14%
540
52%
540
34%
869
May11th to 20thNight
38%
531
22%
1589
13%
531
49%
531
29%
927
May21st to endNight
36%
584
28%
1552
11%
582
52%
582
38%
845
June1st to 10thNight
50%
540
25%
1440
13%
540
61%
540
41%
811
June11th to 20thNight
45%
540
31%
1440
16%
540
57%
540
54%
720
June21st to endNight
54%
540
21%
1440
14%
540
60%
540
38%
862
July1st to 10thNight
65%
525
18%
1400
14%
525
68%
525
33%
910
July11th to 20thNight
75%
522
19%
1435
16%
522
76%
522
37%
858
July21st to endNight
69%
591
11%
1674
11%
558
68%
558
25%
1082
August1st to 10thNight
70%
537
12%
1695
11%
534
72%
534
26%
1062
August11th to 20thNight
67%
534
17%
1778
16%
534
71%
534
25%
1107
August21st to endNight
70%
594
19%
1980
19%
594
74%
594
33%
1122
September1st to 10thNight
63%
540
28%
1800
24%
540
70%
540
36%
984
September11th to 20thNight
60%
540
35%
1820
27%
540
72%
540
42%
900
September21st to endNight
55%
540
33%
1980
26%
540
66%
540
41%
910
October1st to 10thNight
45%
684
31%
2124
15%
684
59%
684
37%
1104
October11th to 20thNight
40%
720
40%
2160
14%
720
60%
720
48%
961
October21st to endNight
37%
792
38%
2376
13%
792
56%
792
42%
1130
November1st to 10thNight
39%
875
37%
2355
12%
875
56%
875
50%
1102
November11th to 20thNight
32%
950
39%
2470
12%
950
50%
950
49%
1167
November21st to endNight
32%
950
34%
2470
11%
950
48%
950
40%
1306
December1st to 10thNight
23%
950
34%
2588
6%
950
46%
950
34%
1310
December11th to 20thNight
25%
949
28%
3128
9%
949
42%
949
29%
1532
December21st to endNight
18%
1040
19%
4662
7%
1026
37%
1026
23%
1922

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 ForecastData
Points
Cloud CoverDay
45%25%435%5%6%8%54%
78826
Night
242442446%8%60%
81011
TransparencyDay
25%7%13%19%24%12%
78542
Night
20%7%15%21%25%12%
80817
SeeingDay
15%21%29%22%10%2
14327
Night
10%19%30%26%13%2
24575

By Month

Percentage Cloud Cover SW (2006-)
Color Meanings:
Overcast 90% covered 80% covered 70% covered 60% covered 50% covered 40% covered 30% covered 20% covered 10% covered Clear
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
426%42348%9%57%
2579
11th to 20thDay
122342345%8%67%
2860
21st to endDay
18%36%6%345%6%7%52%
3146
February1st to 10thDay
325%6%345%5%9%58%
1777
11th to 20thDay
1435%5%2346%7%63%
1849
21st to endDay
435%5%3346%8%60%
1570
March1st to 10thDay
14343245%6%8%59%
1909
11th to 20thDay
39%36%5%35%45%7%50%
2058
21st to endDay
36%25%5%246%6%7%55%
2296
April1st to 10thDay
15%23335%48%7%59%
2160
11th to 20thDay
37%34325%5%6%8%55%
2131
21st to endDay
46%245%345%6%9%52%
2160
May1st to 10thDay
6%7%24425%5%5%7%53%
2160
11th to 20thDay
8%6%25%435%6%7%8%46%
2299
21st to endDay
5%4235%345%5%8%57%
2724
June1st to 10thDay
33235%35%6%7%9%52%
2520
11th to 20thDay
3213425%5%5%8%60%
2520
21st to endDay
7%4245%37%6%7%8%47%
2520
July1st to 10thDay
6%5%36%6%48%7%8%8%39%
2520
11th to 20thDay
5%5%26%6%5%7%8%8%10%38%
2472
21st to endDay
9%6%47%8%48%9%9%9%26%
2545
August1st to 10thDay
10%6%27%6%37%7%8%9%35%
2233
11th to 20thDay
8%6%36%6%5%6%6%7%8%38%
2123
21st to endDay
7%5%36%6%46%5%7%9%42%
2376
September1st to 10thDay
8%6%26%6%45%5%6%8%44%
2160
11th to 20thDay
7%5%244345%5%7%55%
2138
21st to endDay
5%32442345%5%63%
1980
October1st to 10thDay
8%5%2443445%6%56%
1832
11th to 20thDay
2412222345%73%
1800
21st to endDay
45%23312235%69%
1980
November1st to 10thDay
121222345%7%70%
1701
11th to 20thDay
13132235%7%7%67%
1710
21st to endDay
13245%345%5%7%61%
1710
December1st to 10thDay
13333235%6%9%63%
1588
11th to 20thDay
15%35%42335%9%59%
1926
21st to endDay
133332335%8%65%
2794
January1st to 10thNight
327%5%3445%7%60%
4403
11th to 20thNight
132442335%7%67%
4110
21st to endNight
4245%3446%9%59%
4521
February1st to 10thNight
325%42346%9%61%
2400
11th to 20thNight
1435%31445%8%62%
2218
21st to endNight
131433435%7%67%
1884
March1st to 10thNight
142332445%7%64%
2266
11th to 20thNight
26%3432336%9%59%
2068
21st to endNight
242332435%9%64%
2058
April1st to 10thNight
132222346%9%67%
1800
11th to 20thNight
35%24423348%62%
1777
21st to endNight
35%2332335%8%63%
1800
May1st to 10thNight
45%13325%448%61%
1800
11th to 20thNight
6%6%24435%46%8%51%
1589
21st to endNight
441442446%7%62%
1552
June1st to 10thNight
23135%35%5%7%9%57%
1440
11th to 20thNight
211232346%9%66%
1440
21st to endNight
8%4145%35%7%6%10%47%
1440
July1st to 10thNight
6%425%5%47%7%9%8%44%
1440
11th to 20thNight
33145%46%6%8%12%47%
1483
21st to endNight
6%5%36%6%36%8%10%12%36%
1773
August1st to 10thNight
5%425%5%46%8%8%11%41%
1704
11th to 20thNight
5%5%246%47%7%8%10%41%
1778
21st to endNight
43145%35%6%10%12%47%
1980
September1st to 10thNight
6%425%425%5%7%9%52%
1800
11th to 20thNight
5%3233235%5%8%61%
1820
21st to endNight
5%31332335%6%66%
1980
October1st to 10thNight
5%323324445%65%
2124
11th to 20thNight
231211224477%
2160
21st to endNight
4413422345%69%
2376
November1st to 10thNight
1212223347%73%
2355
11th to 20thNight
21222335%7%73%
2470
21st to endNight
232342346%9%63%
2470
December1st to 10thNight
122441345%9%65%
2588
11th to 20thNight
142442446%10%59%
3271
21st to endNight
1325%5%2345%8%62%
4873

Transparency (when cloud cover <= 30%)
Color Meanings:
Too cloudy to forecast Poor Below Average Average Above average Transparent
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
19%6%17%19%30%9%
2580
11th to 20thDay
12%5%27%24%26%6%
2860
21st to endDay
27%7%14%19%25%8%
3146
February1st to 10thDay
23%5%16%20%23%12%
1777
11th to 20thDay
21%5%13%23%25%14%
1859
21st to endDay
20%313%17%29%17%
1570
March1st to 10thDay
20%6%13%20%26%15%
1909
11th to 20thDay
30%5%12%17%26%10%
2058
21st to endDay
26%5%13%22%24%9%
2296
April1st to 10thDay
20%6%12%21%27%14%
2160
11th to 20thDay
25%412%21%24%14%
2134
21st to endDay
25%6%13%20%26%9%
2160
May1st to 10thDay
28%6%10%19%25%12%
2160
11th to 20thDay
33%8%14%17%21%8%
2303
21st to endDay
25%6%12%16%23%19%
2724
June1st to 10thDay
24%9%13%19%21%14%
2520
11th to 20thDay
19%6%10%14%24%26%
2520
21st to endDay
30%8%11%17%18%16%
2520
July1st to 10thDay
38%10%14%11%16%10%
2451
11th to 20thDay
33%14%17%20%12%6%
2397
21st to endDay
45%17%19%15%4
2404
August1st to 10thDay
41%13%15%13%11%7%
2218
11th to 20thDay
40%11%11%18%14%6%
2123
21st to endDay
34%10%16%20%17%4
2376
September1st to 10thDay
35%9%12%17%18%8%
2160
11th to 20thDay
28%7%11%16%23%15%
2138
21st to endDay
22%5%10%20%31%13%
1980
October1st to 10thDay
27%7%10%17%25%14%
1832
11th to 20thDay
15%45%15%38%23%
1800
21st to endDay
20%37%19%36%14%
1980
November1st to 10thDay
12%410%21%34%20%
1701
11th to 20thDay
14%5%11%27%33%12%
1710
21st to endDay
21%410%19%29%18%
1710
December1st to 10thDay
15%6%18%25%24%12%
1588
11th to 20thDay
21%7%14%17%27%14%
1924
21st to endDay
17%414%18%31%16%
2794
January1st to 10thNight
23%416%19%29%9%
4403
11th to 20thNight
16%6%28%22%22%7%
4110
21st to endNight
20%6%18%21%27%7%
4521
February1st to 10thNight
20%5%17%22%24%12%
2400
11th to 20thNight
21%5%14%24%23%12%
2218
21st to endNight
15%5%14%18%30%18%
1884
March1st to 10thNight
18%5%13%22%28%14%
2266
11th to 20thNight
22%5%14%22%28%9%
2068
21st to endNight
18%5%14%22%31%9%
2058
April1st to 10thNight
15%6%13%25%26%16%
1800
11th to 20thNight
22%5%11%21%27%14%
1777
21st to endNight
20%6%14%24%26%10%
1800
May1st to 10thNight
21%5%12%22%28%13%
1800
11th to 20thNight
30%7%15%18%20%9%
1590
21st to endNight
20%8%14%17%22%20%
1552
June1st to 10thNight
22%9%15%21%18%15%
1440
11th to 20thNight
14%6%9%19%25%27%
1440
21st to endNight
29%7%14%16%18%15%
1440
July1st to 10thNight
32%12%15%15%15%12%
1400
11th to 20thNight
24%13%22%21%12%8%
1435
21st to endNight
34%15%29%18%4
1674
August1st to 10thNight
31%15%23%13%11%8%
1695
11th to 20thNight
34%13%19%19%11%4
1778
21st to endNight
25%13%20%23%16%3
1980
September1st to 10thNight
26%9%15%25%18%7%
1800
11th to 20thNight
21%7%13%18%27%14%
1820
21st to endNight
18%7%11%22%29%13%
1980
October1st to 10thNight
21%8%10%19%27%14%
2124
11th to 20thNight
12%46%16%39%22%
2160
21st to endNight
18%310%22%32%14%
2376
November1st to 10thNight
11%5%9%24%35%17%
2355
11th to 20thNight
10%5%11%26%35%14%
2470
21st to endNight
18%5%11%20%27%19%
2470
December1st to 10thNight
15%7%15%28%24%11%
2588
11th to 20thNight
19%6%17%19%27%12%
3272
21st to endNight
18%5%17%20%25%14%
4873

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
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
23%28%26%16%6%
270
11th to 20thDay
28%27%26%14%41
270
21st to endDay
12%32%33%14%6%2
297
February1st to 10thDay
20%35%28%14%3
270
11th to 20thDay
24%37%25%11%3
270
21st to endDay
37%32%24%6%2
225
March1st to 10thDay
22%35%28%12%3
279
11th to 20thDay
25%29%31%12%21
449
21st to endDay
29%37%27%6%1
462
April1st to 10thDay
18%39%31%9%3
420
11th to 20thDay
24%41%28%6%1
412
21st to endDay
25%33%31%9%1
420
May1st to 10thDay
17%36%32%11%3
423
11th to 20thDay
14%20%35%20%9%2
602
21st to endDay
13%21%36%23%7%1
679
June1st to 10thDay
6%14%32%31%15%2
630
11th to 20thDay
6%16%37%25%14%2
630
21st to endDay
8%12%31%28%17%4
630
July1st to 10thDay
6%328%32%26%5%
621
11th to 20thDay
7%415%41%26%7%
570
21st to endDay
11%215%39%28%5%
487
August1st to 10thDay
11%5%28%37%16%3
447
11th to 20thDay
8%5%34%34%17%1
437
21st to endDay
10%6%26%38%17%2
495
September1st to 10thDay
9%8%30%36%15%3
450
11th to 20thDay
6%10%41%30%11%2
428
21st to endDay
8%20%29%27%13%3
270
October1st to 10thDay
11%26%24%23%12%3
270
11th to 20thDay
12%26%31%17%9%4
270
21st to endDay
17%25%29%22%7%1
297
November1st to 10thDay
17%26%32%21%4
270
11th to 20thDay
14%26%30%20%9%1
270
21st to endDay
13%35%27%16%7%2
270
December1st to 10thDay
20%31%27%16%5%1
270
11th to 20thDay
17%34%28%15%4
270
21st to endDay
29%32%24%12%3
297
January1st to 10thNight
14%24%29%23%8%2
936
11th to 20thNight
15%23%32%21%6%3
760
21st to endNight
7%30%34%21%8%1
836
February1st to 10thNight
11%28%39%17%4
760
11th to 20thNight
14%28%39%16%3
744
21st to endNight
16%32%39%11%1
628
March1st to 10thNight
13%30%34%17%6%1
760
11th to 20thNight
12%22%32%26%8%
752
21st to endNight
15%28%39%15%3
672
April1st to 10thNight
12%30%40%15%3
540
11th to 20thNight
13%25%35%22%5%
533
21st to endNight
12%26%36%20%5%
540
May1st to 10thNight
8%21%38%27%7%
540
11th to 20thNight
10%17%30%26%16%1
531
21st to endNight
9%18%35%32%7%
584
June1st to 10thNight
49%29%41%17%1
540
11th to 20thNight
28%41%36%11%1
540
21st to endNight
7%5%26%36%25%1
540
July1st to 10thNight
6%117%43%29%3
525
11th to 20thNight
327%42%42%4
522
21st to endNight
7%28%34%40%9%
591
August1st to 10thNight
7%110%36%39%7%
537
11th to 20thNight
6%314%40%34%4
534
21st to endNight
5%116%41%33%5%
594
September1st to 10thNight
8%319%40%28%2
540
11th to 20thNight
6%424%41%21%3
540
21st to endNight
8%9%24%40%17%2
540
October1st to 10thNight
5%15%31%32%15%1
684
11th to 20thNight
6%19%34%28%11%3
720
21st to endNight
13%18%29%24%13%4
792
November1st to 10thNight
8%19%32%29%10%2
875
11th to 20thNight
10%22%35%23%10%1
950
21st to endNight
12%21%33%23%11%1
950
December1st to 10thNight
13%27%35%16%7%1
950
11th to 20thNight
12%29%31%21%6%1
950
21st to endNight
16%28%35%17%41
1045
Page generated at 2024-03-15 12:01:44. Version ac07

Copyright © 2024 Attilla Danko.


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