Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 25

Waxing Crescent 30%

10:50

22:08

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 OK
19 Good
20 Good
21 Good
22 Good
23 Good
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:30, Set: 16:16, Transit: 11:53. Moon - Rise: 10:50, Set: 22:08. Civil Dark: 16:50 - 06:56. Nautical Dark: 17:27 - 06:19. Astro Dark: 18:03 - 05:43

Total Clouds (% Sky Obscured)

99
86
93
91
78
64
62
36
14
3
1
1
3
4
4
3
3
3
3
12
29
40
59
95

Low Clouds (% Sky Obscured)

79
86
93
91
78
64
62
31
13
0
0
0
1
2
1
1
1
1
1
1
1
0
0
0

Medium Clouds (% Sky Obscured)

28
32
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
37

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
22
26
59
95

ISS Passover

Visibility (miles)

9
9
8
2
6
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
0
0
26
22
9
4
4
2
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
9
10
12
16
16
15
14
13
12
12
11
11
10
9
8
7
7
6
5
5
3
2
2

Chance of Frost

Temperature (°C)

-4
-4
-5
-6
-5
-7
-8
-10
-11
-12
-13
-14
-14
-15
-15
-16
-16
-17
-18
-18
-18
-18
-18
-17

Feels Like (°C)

-11
-10
-11
-13
-12
-14
-15
-16
-17
-17
-18
-19
-19
-19
-20
-20
-20
-20
-21
-21
-22
-21
-21
-21

Dew Point (°C)

-6
-6
-8
-9
-8
-11
-12
-14
-15
-16
-16
-17
-17
-18
-18
-19
-19
-20
-21
-21
-21
-21
-21
-21

Relative Humidity (%)

85
84
77
79
80
73
72
72
72
73
73
73
75
76
77
79
80
79
78
78
77
77
77
72

Pressure (mb)

1014
1014
1014
1015
1016
1018
1019
1021
1023
1024
1025
1026
1026
1027
1027
1027
1028
1028
1028
1028
1029
1029
1029
1029

Ozone (du)

401
388
372
366
367
366
359
357
354
350
348
346
343
349
349
350
345
336
332
328
324
323
325
326

Friday 26

Waxing Crescent 41%

11:08

23:20

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:30, Set: 16:17, Transit: 11:53. Moon - Rise: 11:08, Set: 23:20. Civil Dark: 16:50 - 06:56. Nautical Dark: 17:28 - 06:19. Astro Dark: 18:03 - 05:43

Total Clouds (% Sky Obscured)

97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
96
96
88

Low Clouds (% Sky Obscured)

0
0
0
0
1
5
2
8
14
23
25
19
15
15
26
43
34
78
72
67
70
48
29
64

Medium Clouds (% Sky Obscured)

66
71
98
100
100
99
100
96
96
100
100
100
100
100
100
100
99
100
100
94
91
85
90
64

High Clouds (% Sky Obscured)

97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
91
100
100
6
20
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
6
5
8
8
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
1
4
7
15
26
28
19
23
19
12
10
2
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
3
2
5
5
5
5
5
6
6
5
6
6
5
4
4
4
5
5
5
5
5
5
6

Chance of Frost

Temperature (°C)

-16
-15
-15
-14
-14
-14
-14
-14
-14
-14
-14
-14
-13
-13
-13
-13
-13
-13
-12
-12
-12
-12
-13
-12

Feels Like (°C)

-20
-19
-19
-18
-19
-19
-19
-19
-19
-19
-18
-18
-17
-17
-17
-17
-17
-17
-17
-16
-16
-17
-17
-16

Dew Point (°C)

-20
-20
-19
-19
-19
-18
-17
-17
-17
-17
-17
-16
-16
-16
-16
-15
-15
-15
-14
-14
-14
-14
-15
-14

Relative Humidity (%)

68
69
68
67
68
70
75
79
79
79
79
79
78
79
79
81
83
84
84
84
84
86
84
81

Pressure (mb)

1029
1027
1026
1025
1024
1023
1022
1021
1021
1021
1021
1021
1021
1021
1020
1020
1021
1021
1021
1021
1022
1022
1023
1024

Ozone (du)

328
329
327
326
327
328
328
328
329
332
333
337
337
338
341
341
341
346
354
360
362
356
355
353

Saturday 27

First Quarter 52%

11:26

00:34

10 Bad
11 OK
12 OK
13 Good
14 Good
15 Good
16 Good
17 Good
18 Good
19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good

Sun - Rise: 07:30, Set: 16:17, Transit: 11:54. Moon - Rise: 11:26, Set: 00:34. Civil Dark: 16:51 - 06:57. Nautical Dark: 17:28 - 06:19. Astro Dark: 18:04 - 05:44

Total Clouds (% Sky Obscured)

67
39
39
17
11
9
7
4
4
2
2
2
2
3
4
4
4
4
4
3
3
3
6
5

Low Clouds (% Sky Obscured)

29
21
18
2
2
1
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

27
25
22
12
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
4
2
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
8
8
8
8
8
8
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
16
53
66
66
66
66
66
66
66
66
66

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
5
5
6
6
6
5
4
4
2
3
2
2
2
2
2
1
1
0
0
1
1
2
2

Chance of Frost

Temperature (°C)

-11
-11
-10
-10
-9
-10
-10
-12
-12
-13
-14
-14
-14
-14
-14
-15
-15
-15
-14
-14
-14
-14
-13
-12

Feels Like (°C)

-16
-15
-13
-13
-12
-13
-13
-14
-15
-15
-15
-15
-16
-16
-15
-15
-16
-16
-16
-15
-16
-16
-15
-13

Dew Point (°C)

-15
-14
-14
-13
-13
-13
-13
-14
-15
-15
-16
-16
-16
-16
-16
-17
-17
-17
-17
-16
-17
-17
-16
-15

Relative Humidity (%)

76
76
75
75
75
78
83
83
83
81
84
83
83
83
84
82
82
82
82
84
82
81
81
75

Pressure (mb)

1025
1025
1024
1025
1025
1025
1025
1026
1026
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025

Ozone (du)

355
354
353
358
360
359
358
362
361
359
359
358
358
359
359
362
361
357
354
352
351
351
351
349

Sunday 28

Waxing Gibbous 63%

11:46

01:51

10 Bad
11 OK
12 OK
13 OK
14 Bad
15 OK
16 OK
17 OK
18 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:30, Set: 16:18, Transit: 11:54. Moon - Rise: 11:46, Set: 01:51. Civil Dark: 16:52 - 06:57. Nautical Dark: 17:29 - 06:19. Astro Dark: 18:05 - 05:44

Total Clouds (% Sky Obscured)

50
45
45
45
50
45
45
40
40
53
65
73
84
92
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
1
1
1
2
2
2
2
2
6
7
8
97
92
92
95
97
91
84
77

Medium Clouds (% Sky Obscured)

0
0
0
1
17
6
40
35
33
36
14
50
65
78
92
95
98
100
100
100
96
100
100
100

High Clouds (% Sky Obscured)

40
25
15
10
5
5
5
0
0
18
28
42
61
81
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
4
1
2
9
9
6

Fog (%)

66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
39
72
74
95
88
88
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.3
0.8
0.6
0.4
1
0.7

Wind Speed/Direction (mph)

2
2
3
3
3
3
3
3
3
3
3
3
4
4
4
4
5
7
9
10
11
13
15
17

Chance of Frost

Temperature (°C)

-10
-9
-7
-6
-6
-5
-6
-6
-7
-7
-7
-7
-6
-5
-4
-4
-4
-3
-2
-2
-1
1
2
3

Feels Like (°C)

-11
-12
-11
-10
-9
-9
-10
-10
-10
-11
-11
-10
-10
-9
-10
-9
-8
-7
-6
-6
-6
-5
-5
-5

Dew Point (°C)

-14
-13
-12
-11
-10
-9
-9
-9
-10
-10
-10
-10
-9
-8
-8
-8
-7
-6
-4
-3
-2
-1
0
1

Relative Humidity (%)

73
72
70
69
70
74
76
77
77
77
77
79
77
75
75
75
76
81
86
87
92
89
86
89

Pressure (mb)

1024
1023
1022
1021
1020
1019
1018
1017
1016
1015
1014
1012
1011
1009
1007
1005
1004
1001
999
997
995
993
991
990

Ozone (du)

347
346
344
345
345
341
340
339
341
342
345
341
341
341
339
337
334
332
334
331
332
331
332
336

Monday 29

Waxing Gibbous 74%

12:09

03:12

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:30, Set: 16:19, Transit: 11:55. Moon - Rise: 12:09, Set: 03:12. Civil Dark: 16:53 - 06:57. Nautical Dark: 17:30 - 06:20. Astro Dark: 18:06 - 05:44

Total Clouds (% Sky Obscured)

100
100
100
99
97
96
96
97
99
99
96
100
100
100
99
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

84
89
98
88
77
65
67
68
69
72
75
78
85
92
97
95
97
96
96
96
94
90
87
85

Medium Clouds (% Sky Obscured)

100
100
100
95
91
87
39
36
41
44
47
52
60
61
57
67
80
96
96
97
97
98
99
100

High Clouds (% Sky Obscured)

67
33
0
5
5
10
0
0
0
0
0
0
0
0
0
3
1
0
13
34
64
61
53
49

ISS Passover

Visibility (miles)

8
5
5
9
9
9
9
9
8
1
6
9
7
6
5
7
5
3
2
1
1
1
3
5

Fog (%)

66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66

Precipitation Type

Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
Snow
None
None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

95
95
90
69
67
45
29
27
33
34
22
22
34
33
27
43
42
43
53
56
56
54
52
49

Precipitation Amount (mm)

0.5
0.8
0.5
0.2
0.2
0
0
0
0
0.1
0
0
0
0
0
0
0
0
0.2
0.2
0.2
0.2
0.2
0.1

Wind Speed/Direction (mph)

19
15
12
9
10
10
11
11
11
12
12
14
16
16
17
18
19
20
21
22
22
22
22
23

Chance of Frost

Temperature (°C)

3
4
4
4
3
4
3
2
2
0
-2
-3
-4
-5
-7
-8
-8
-9
-9
-10
-10
-10
-11
-11

Feels Like (°C)

-5
-5
-5
-4
-5
-3
-4
-5
-5
-8
-11
-12
-12
-14
-15
-16
-16
-16
-16
-16
-17
-17
-20
-20

Dew Point (°C)

2
2
3
3
2
2
-1
-3
-3
-3
-6
-8
-9
-10
-10
-12
-12
-12
-12
-13
-13
-13
-14
-15

Relative Humidity (%)

89
88
93
93
94
88
74
70
74
77
74
71
70
72
74
74
74
75
77
77
77
78
76
73

Pressure (mb)

989
987
986
985
985
985
986
986
986
986
987
987
987
988
988
989
989
989
990
991
992
993
994
995

Ozone (du)

335
337
337
340
347
358
374
382
377
382
385
386
383
380
383
393
400
407
414
417
420
424
422
420

Tuesday 30

Waxing Gibbous 84%

12:38

04:36

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 OK
01 OK
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:30, Set: 16:20, Transit: 11:55. Moon - Rise: 12:38, Set: 04:36. Civil Dark: 16:53 - 06:57. Nautical Dark: 17:31 - 06:20. Astro Dark: 18:06 - 05:44

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
88
78
78
60
36
17
38
60
82
88
94
100
99
98
96

Low Clouds (% Sky Obscured)

85
85
85
85
86
92
95
96
96
85
75
73
60
36
17
38
54
66
70
75
81
82
83
83

Medium Clouds (% Sky Obscured)

100
100
100
99
97
96
93
90
86
71
57
43
29
14
2
21
41
60
73
86
99
97
95
93

High Clouds (% Sky Obscured)

84
100
100
100
100
100
100
100
100
84
68
52
35
17
0
4
6
2
2
2
2
2
1
2

ISS Passover

Visibility (miles)

8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66

Precipitation Type

Snow
Snow
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

49
48
42
47
49
49
50
51
52
49
44
37
31
22
10
7
2
0
1
2
2
11
14
10

Precipitation Amount (mm)

0.1
0.1
0
0.1
0.1
0.2
0.2
0.2
0.2
0.2
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

23
22
22
22
21
20
19
19
19
18
18
17
17
15
14
12
9
6
5
6
7
8
9
10

Chance of Frost

Temperature (°C)

-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-10
-11
-11
-10
-10
-10
-10
-10
-9
-9
-9
-8

Feels Like (°C)

-21
-21
-21
-21
-21
-21
-21
-21
-21
-21
-19
-19
-19
-19
-18
-18
-17
-17
-16
-16
-16
-17
-15
-15

Dew Point (°C)

-15
-15
-16
-16
-16
-16
-16
-16
-16
-16
-15
-15
-15
-16
-16
-16
-16
-16
-16
-16
-15
-15
-14
-13

Relative Humidity (%)

72
72
70
69
69
69
69
67
69
67
68
68
66
66
66
65
62
61
59
61
62
65
65
67

Pressure (mb)

996
997
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1007
1008
1008
1008
1009
1009
1009
1008
1008
1008
1008

Ozone (du)

418
423
428
434
430
426
423
419
414
410
408
405
402
396
389
383
377
370
364
360
356
352
352
351

Wednesday 31

Waxing Gibbous 92%

13:16

05:58

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:31, Set: 16:21, Transit: 11:56. Moon - Rise: 13:16, Set: 05:58. Civil Dark: 16:54 - 06:57. Nautical Dark: 17:31 - 06:20. Astro Dark: 18:07 - 05:44

Total Clouds (% Sky Obscured)

98
99
100
100
100
100
96
90
80
80
70
65
72
82
95
92
89
87
91
94
97

Low Clouds (% Sky Obscured)

89
94
100
97
96
92
85
77
75
70
70
65
72
82
94
76
58
40
41
50
55

Medium Clouds (% Sky Obscured)

86
77
65
63
65
67
78
89
80
80
70
65
72
82
85
92
89
87
91
94
97

High Clouds (% Sky Obscured)

9
13
15
25
33
41
58
70
60
51
14
8
6
3
2
2
1
0
0
0
0

ISS Passover

Visibility (miles)

9
7
4
2
1
1
0
0
0
1
0
0
0
0
0
0
0
0
0
3
6

Fog (%)

66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66
66

Precipitation Type

None
None
None
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

27
33
37
52
62
69
59
47
30
36
40
42
43
41
37
39
38
35
34
31
27

Precipitation Amount (mm)

0
0
0
0.2
0.3
0.4
0.3
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
10
10
8
10
13
11
10
9
8
6
5
5
6
7
6
7
7
7
8

Chance of Frost

Temperature (°C)

-8
-7
-6
-5
-5
-5
-5
-6
-6
-7
-7
-8
-9
-9
-10
-10
-11
-12
-12
-13
-14

Feels Like (°C)

-14
-13
-13
-13
-9
-10
-10
-10
-10
-10
-11
-12
-12
-12
-12
-12
-15
-16
-17
-17
-17

Dew Point (°C)

-12
-11
-9
-8
-7
-6
-5
-7
-7
-9
-9
-10
-10
-10
-11
-12
-13
-14
-15
-16
-17

Relative Humidity (%)

68
73
76
79
84
89
96
92
90
87
88
88
90
88
87
86
86
85
83
78
74

Pressure (mb)

1008
1006
1005
1004
1005
1005
1006
1007
1008
1009
1010
1010
1011
1011
1011
1012
1012
1013
1014
1014
1015

Ozone (du)

350
347
344
341
341
341
340
340
340
339
339
339
339
337
335
334
335
337
339
350
361

Forecast for Venise-en-Québec, Montérégie, Canada (45.08,-73.14)

Generated: 25/12/25 10:46:41. Forecast: 25/12/25 to 31/12/25. Timezone: UTC-5.00