Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 92%

14:30

06:15

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:51, Set: 16:45, Transit: 12:18. Moon - Rise: 14:30, Set: 06:15. Civil Dark: 17:17 - 07:17. Nautical Dark: 17:54 - 06:41. Astro Dark: 18:29 - 06:05

Total Clouds (% Sky Obscured)

84
88
90
99
93
99
99
95
94
87
74
71
91
96
99
98
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

23
14
10
67
83
90
91
85
82
76
64
67
87
93
98
91
91
91
94
95
96
100
100
100

Medium Clouds (% Sky Obscured)

84
88
90
98
83
94
93
85
85
58
22
2
21
26
29
75
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

39
45
35
18
17
2
14
44
50
45
4
0
0
2
6
36
100
100
63
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
5
9
7
1
2
7
8
9
9
9
9
9
6
0
0
0
5
1
3

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

Precipitation Probability (%)

0
0
0
2
6
20
16
24
18
14
0
3
4
16
29
34
37
39
38
43
62
85
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.1
0
0.1
0.2
0.2
0.3
0.5
1.5
2.4

Wind Speed/Direction (mph)

9
7
6
4
5
4
3
3
3
4
2
2
2
3
6
8
9
11
11
12
13
18
19
20

Chance of Frost

Temperature (°C)

-3
-3
-3
-3
-3
-3
-3
-3
-2
-2
-2
-3
-2
-2
-1
-1
1
2
2
2
2
3
3
3

Feels Like (°C)

-8
-7
-7
-6
-7
-6
-6
-5
-5
-5
-5
-5
-4
-4
-5
-5
-5
-3
-3
-3
-3
-4
-4
-4

Dew Point (°C)

-9
-8
-8
-7
-7
-5
-4
-3
-3
-3
-2
-3
-3
-3
-4
-4
-3
-2
1
2
1
2
2
2

Relative Humidity (%)

64
67
68
69
72
86
91
96
96
96
98
98
94
91
83
80
75
80
93
96
94
94
94
94

Pressure (mb)

1007
1008
1008
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1008
1007
1007
1006
1006
1005
1003
1001
999
997
996

Ozone (du)

397
401
419
406
393
401
404
409
409
401
395
389
386
383
382
379
381
381
376
371
375
374
385
382

Thursday 1

Waxing Gibbous 97%

15:37

07:27

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK

Sun - Rise: 07:51, Set: 16:46, Transit: 12:18. Moon - Rise: 15:37, Set: 07:27. Civil Dark: 17:18 - 07:18. Nautical Dark: 17:55 - 06:41. Astro Dark: 18:30 - 06:05

Total Clouds (% Sky Obscured)

100
100
61
67
100
75
50
84
85
95
93
89
94
94
75
75
71
57
91
67
59
45
48
42

Low Clouds (% Sky Obscured)

100
100
37
46
100
75
44
79
81
95
93
89
94
94
70
75
67
20
55
65
59
45
48
42

Medium Clouds (% Sky Obscured)

100
100
43
48
60
0
0
18
0
0
0
0
0
0
0
0
0
0
32
3
30
5
0
0

High Clouds (% Sky Obscured)

100
5
4
4
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

1
9
9
9
0
6
9
9
9
1
9
9
8
7
9
9
8
9
9
9
9
9
9
9

Fog (%)

73
34
0
11
0
0
0
0
2
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

95
95
63
25
48
52
11
18
27
10
13
16
7
5
7
4
6
2
1
1
2
4
5
1

Precipitation Amount (mm)

1.8
1.2
0
0
0.2
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

19
10
7
7
9
14
14
12
13
16
16
14
13
13
13
13
14
14
14
14
14
13
12
11

Chance of Frost

Temperature (°C)

4
3
3
1
1
0
-1
-2
-2
-3
-3
-4
-5
-6
-6
-7
-7
-7
-7
-7
-7
-7
-7
-7

Feels Like (°C)

-3
-2
-1
-1
-2
-6
-7
-6
-7
-9
-10
-10
-11
-11
-12
-13
-13
-13
-12
-13
-13
-13
-13
-13

Dew Point (°C)

3
2
1
-0
0
-3
-7
-7
-6
-5
-7
-8
-9
-10
-11
-12
-12
-14
-14
-15
-15
-14
-13
-14

Relative Humidity (%)

94
91
88
91
96
80
63
66
75
84
76
75
74
73
70
66
67
56
54
51
49
54
59
58

Pressure (mb)

994
994
993
993
992
992
992
992
992
992
994
995
996
997
998
998
1000
1000
1000
1000
999
999
1000
1000

Ozone (du)

393
399
398
396
404
407
409
415
417
400
383
387
384
373
364
370
363
367
364
370
362
367
369
368

Friday 2

Waxing Gibbous 100%

16:54

08:25

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

Sun - Rise: 07:51, Set: 16:47, Transit: 12:19. Moon - Rise: 16:54, Set: 08:25. Civil Dark: 17:19 - 07:18. Nautical Dark: 17:56 - 06:41. Astro Dark: 18:31 - 06:05

Total Clouds (% Sky Obscured)

44
27
39
27
55
24
18
16
7
8
9
13
16
13
6
0
12
44
89
85
83
82
81
59

Low Clouds (% Sky Obscured)

44
26
32
18
20
17
14
13
7
8
8
10
13
11
4
0
7
41
86
85
83
82
81
48

Medium Clouds (% Sky Obscured)

0
0
0
6
44
4
0
0
0
0
0
0
0
0
0
0
2
2
11
2
0
1
0
0

High Clouds (% Sky Obscured)

0
0
0
0
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
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 (%)

1
1
1
1
3
3
4
3
4
6
7
7
7
5
6
4
3
4
4
6
8
9
10
5

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)

11
11
10
10
9
9
9
9
8
8
9
9
9
9
9
8
8
10
11
12
12
12
11
10

Chance of Frost

Temperature (°C)

-8
-8
-9
-9
-9
-9
-9
-9
-10
-9
-9
-9
-10
-10
-10
-10
-9
-8
-7
-7
-6
-7
-7
-8

Feels Like (°C)

-13
-13
-13
-13
-13
-14
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-12
-12
-12
-13
-12
-13
-12
-14

Dew Point (°C)

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

Relative Humidity (%)

58
58
60
60
61
62
61
60
61
62
64
65
64
62
61
60
59
55
53
51
51
52
55
57

Pressure (mb)

1000
1001
1001
1002
1003
1003
1003
1003
1003
1003
1004
1004
1004
1005
1005
1005
1006
1007
1007
1006
1006
1007
1007
1008

Ozone (du)

367
362
368
371
368
372
378
375
374
374
368
370
375
383
408
395
374
358
351
351
360
360
361
369

Saturday 3

Full Moon 99%

16:54

09:08

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:51, Set: 16:48, Transit: 12:19. Moon - Rise: 16:54, Set: 09:08. Civil Dark: 17:20 - 07:17. Nautical Dark: 17:57 - 06:41. Astro Dark: 18:32 - 06:05

Total Clouds (% Sky Obscured)

60
65
81
82
62
54
58
67
58
76
100
100
100
100
100
100
100
100
86
98
99
99
99
99

Low Clouds (% Sky Obscured)

51
59
81
82
61
54
49
46
31
18
11
6
57
66
55
58
68
83
72
87
92
94
94
93

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
21
46
58
76
100
100
100
100
100
100
100
100
70
90
91
94
95
97

High Clouds (% Sky Obscured)

0
0
0
0
0
0
33
67
58
76
100
100
100
100
100
100
100
100
67
33
0
0
0
5

ISS Passover

Visibility (miles)

9
9
9
6
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
2
3
2

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
Snow
None
None
None

Precipitation Probability (%)

11
12
12
14
14
12
12
9
4
5
4
1
1
1
0
2
5
8
22
31
41
39
30
27

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0

Wind Speed/Direction (mph)

10
9
8
8
8
8
8
7
7
6
5
5
5
4
3
3
3
2
2
3
4
4
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-15
-14
-14
-14
-15
-16
-17
-16
-17
-16
-16
-16
-16
-16
-16
-16
-16
-16
-16
-15
-14
-12
-12
-12

Relative Humidity (%)

60
65
69
71
68
63
62
63
65
66
67
67
66
65
63
62
61
57
56
57
60
71
77
77

Pressure (mb)

1009
1010
1011
1012
1013
1013
1014
1014
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1015
1014
1013
1012
1012
1011

Ozone (du)

375
374
372
366
362
361
357
357
355
354
356
356
355
354
349
345
344
343
338
335
330
327
327
332

Sunday 4

Waning Gibbous 95%

18:17

09:40

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:50, Set: 16:49, Transit: 12:20. Moon - Rise: 18:17, Set: 09:40. Civil Dark: 17:21 - 07:17. Nautical Dark: 17:57 - 06:41. Astro Dark: 18:33 - 06:05

Total Clouds (% Sky Obscured)

98
97
97
95
92
88
90
89
89
85
89
84
71
67
74
74
74
71
71
71
74
82
84
74

Low Clouds (% Sky Obscured)

94
90
93
92
88
84
81
79
80
81
87
84
71
67
74
74
74
71
71
71
74
77
72
67

Medium Clouds (% Sky Obscured)

63
84
31
14
8
3
2
1
0
0
0
0
0
0
0
1
2
3
2
2
2
1
1
0

High Clouds (% Sky Obscured)

5
0
5
5
5
5
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
1
1
8
8
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 (%)

31
31
31
31
32
14
32
27
22
6
6
5
5
4
3
5
4
2
3
3
3
6
6
3

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)

7
7
8
8
9
9
10
10
10
10
10
10
10
10
10
10
10
10
11
10
10
10
10
9

Chance of Frost

Temperature (°C)

-8
-9
-9
-10
-10
-11
-11
-12
-12
-12
-12
-13
-13
-13
-13
-14
-13
-13
-12
-12
-11
-11
-11
-12

Feels Like (°C)

-13
-13
-14
-15
-15
-16
-16
-17
-18
-18
-18
-18
-19
-18
-18
-19
-19
-19
-19
-18
-18
-17
-17
-17

Dew Point (°C)

-11
-11
-11
-12
-12
-13
-13
-14
-15
-15
-16
-16
-16
-17
-18
-18
-18
-19
-19
-19
-19
-19
-18
-18

Relative Humidity (%)

83
83
85
85
85
83
81
81
79
78
76
76
78
73
70
68
63
60
57
55
53
52
55
59

Pressure (mb)

1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1011
1011
1012
1013
1014
1015
1014
1014
1014
1015
1016

Ozone (du)

334
335
337
339
340
342
341
340
340
341
348
349
349
347
350
352
358
363
368
368
367
367
368
369

Monday 5

Waning Gibbous 89%

19:37

10:05

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:50, Set: 16:50, Transit: 12:20. Moon - Rise: 19:37, Set: 10:05. Civil Dark: 17:22 - 07:17. Nautical Dark: 17:58 - 06:41. Astro Dark: 18:34 - 06:05

Total Clouds (% Sky Obscured)

63
61
64
71
79
87
91
95
99
97
93
90
98
80
75
89
90
91
91
94
100
100
99
98

Low Clouds (% Sky Obscured)

60
61
64
58
52
48
37
26
18
39
51
36
39
49
49
67
78
90
91
94
100
96
91
87

Medium Clouds (% Sky Obscured)

0
0
0
8
17
23
35
47
50
39
52
56
59
62
60
63
75
74
79
80
80
80
85
80

High Clouds (% Sky Obscured)

0
0
0
19
38
60
70
82
95
63
30
0
0
0
0
0
0
0
0
0
0
10
20
28

ISS Passover

Visibility (miles)

9
7
5
3
4
5
6
7
8
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
Snow
Snow
Snow
Snow
Snow
Snow
Frozen rai

Precipitation Probability (%)

8
11
10
11
11
10
11
11
9
15
23
33
36
37
36
36
37
38
52
65
79
79
77
74

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.3
0.5
0.5
0.4
0.5

Wind Speed/Direction (mph)

8
7
7
7
6
6
5
5
6
6
6
6
6
6
6
5
6
7
7
8
8
9
8
7

Chance of Frost

Temperature (°C)

-13
-13
-13
-14
-14
-14
-14
-14
-13
-13
-13
-13
-12
-12
-12
-12
-10
-8
-6
-6
-5
-4
-3
-3

Feels Like (°C)

-18
-18
-18
-19
-19
-18
-18
-18
-18
-18
-17
-17
-16
-16
-16
-16
-14
-13
-12
-11
-10
-10
-8
-8

Dew Point (°C)

-18
-18
-18
-18
-18
-18
-18
-18
-17
-17
-17
-17
-16
-16
-16
-15
-14
-13
-13
-12
-12
-11
-10
-9

Relative Humidity (%)

62
66
68
71
70
69
68
69
69
70
70
70
72
73
73
76
69
65
61
58
56
54
59
63

Pressure (mb)

1016
1017
1018
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1018
1017
1016
1016
1016

Ozone (du)

370
371
372
373
371
370
368
366
363
360
361
361
361
364
367
371
374
376
379
381
382
384
387
390

Tuesday 6

Waning Gibbous 81%

20:53

10:25

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

Sun - Rise: 07:50, Set: 16:51, Transit: 12:20. Moon - Rise: 20:53, Set: 10:25. Civil Dark: 17:23 - 07:17. Nautical Dark: 17:59 - 06:41. Astro Dark: 18:35 - 06:05

Total Clouds (% Sky Obscured)

91
89
88
92
91
91
100
100
74
70
61
47
34
43
51
53
54
59
75
78
75

Low Clouds (% Sky Obscured)

87
87
84
81
66
61
61
60
74
70
61
47
34
43
51
53
54
59
75
78
75

Medium Clouds (% Sky Obscured)

79
74
73
63
49
37
32
10
10
8
9
10
9
8
7
9
19
31
41
45
45

High Clouds (% Sky Obscured)

30
31
31
47
56
5
0
0
0
0
0
0
0
0
0
3
6
11
35
49
70

ISS Passover

Visibility (miles)

9
9
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

Precipitation Type

Frozen rai
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

59
42
27
21
15
4
7
7
1
3
2
1
5
5
3
10
10
8
10
10
9

Precipitation Amount (mm)

0.3
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
4
4
4
4
5
4
4
4
4
5
5
7
7
8
8
9
9
10
11

Chance of Frost

Temperature (°C)

-3
-3
-3
-3
-4
-4
-4
-5
-6
-6
-8
-8
-8
-8
-7
-7
-6
-5
-4
-3
-3

Feels Like (°C)

-8
-7
-7
-6
-7
-7
-6
-6
-7
-7
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9

Dew Point (°C)

-8
-7
-6
-6
-6
-7
-7
-7
-8
-8
-10
-10
-10
-10
-10
-10
-10
-9
-9
-9
-8

Relative Humidity (%)

68
73
76
79
81
82
84
84
85
87
85
85
83
83
83
83
77
70
64
64
64

Pressure (mb)

1015
1016
1016
1016
1017
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017

Ozone (du)

394
398
402
406
394
382
370
375
381
386
382
377
372
370
368
365
362
359
356
357
358

Forecast for Halifax, Halifax Regional Municipality, Canada (44.65,-63.57)

Generated: 31/12/25 17:24:29. Forecast: 31/12/25 to 06/01/26. Timezone: UTC-4.00