Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 23

Waxing Crescent 21%

10:50

21:18

23 OK
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
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:49, Set: 16:38, Transit: 12:14. Moon - Rise: 10:50, Set: 21:18. Civil Dark: 17:12 - 07:16. Nautical Dark: 17:49 - 06:39. Astro Dark: 18:24 - 06:03

Total Clouds (% Sky Obscured)

34
59
65
100
100
100
94
93
100
100
100
100
100
100
100
92
89
98
100
92
99
91
83
52

Low Clouds (% Sky Obscured)

0
0
0
0
20
60
53
48
40
47
77
69
44
29
11
26
48
52
3
16
27
26
15
13

Medium Clouds (% Sky Obscured)

34
59
65
100
100
100
93
93
100
100
100
100
100
100
100
61
58
97
100
83
94
73
57
20

High Clouds (% Sky Obscured)

34
59
65
83
66
50
50
50
45
45
50
25
0
0
1
0
0
0
0
0
0
0
0
1

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 (%)

0
0
0
0
0
0
0
0
0
0
1
2
1
1
3
0
0
1
1
0
0
3
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)

3
3
2
5
4
4
5
6
7
8
9
10
11
11
10
10
9
8
8
8
8
8
8
8

Chance of Frost

Temperature (°C)

-12
-12
-12
-11
-10
-10
-10
-10
-10
-9
-8
-7
-6
-5
-4
-4
-4
-5
-5
-6
-6
-6
-6
-6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

42
43
46
50
52
53
54
56
57
60
61
59
56
51
49
47
47
50
53
55
58
65
69
63

Pressure (mb)

1022
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1018
1017
1016
1016
1016
1017
1018
1019
1019
1020
1020
1020
1020

Ozone (du)

350
354
357
370
377
382
380
382
384
379
381
377
372
368
369
370
372
370
375
370
379
383
398
407

Wednesday 24

Waxing Crescent 30%

11:11

22:28

23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Bad
06 OK
07 Bad
08 Bad
09 Bad
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

Sun - Rise: 07:50, Set: 16:39, Transit: 12:14. Moon - Rise: 11:11, Set: 22:28. Civil Dark: 17:13 - 07:16. Nautical Dark: 17:50 - 06:39. Astro Dark: 18:25 - 06:04

Total Clouds (% Sky Obscured)

18
5
3
0
0
1
51
26
94
100
100
100
100
100
100
100
100
100
100
100
100
99
99
98

Low Clouds (% Sky Obscured)

8
4
3
0
0
1
13
16
21
19
58
81
78
97
98
96
94
94
95
97
97
93
89
84

Medium Clouds (% Sky Obscured)

2
0
1
0
0
0
0
2
74
91
100
100
100
100
100
100
100
100
100
100
100
99
97
94

High Clouds (% Sky Obscured)

0
0
0
0
0
0
44
6
81
100
100
100
100
100
100
55
60
40
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
0
0
0
0
0
0
0
0
0

Fog (%)

0
0
0
1
1
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
4
14
60
68
73
95
93
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.4
0.9
0.5
0.6
1.4
2.4
2.9
1.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-12
-12
-12
-12
-12
-12
-12
-12
-11
-11
-11
-11
-11
-12
-9
-7
-6
-6
-5
-5
-4
-4
-5
-6

Relative Humidity (%)

62
63
64
66
68
70
72
74
75
74
70
65
61
58
70
85
87
92
94
94
94
96
96
94

Pressure (mb)

1020
1019
1019
1019
1018
1018
1017
1017
1017
1016
1015
1014
1012
1010
1009
1008
1006
1005
1003
1002
1001
1001
1000
999

Ozone (du)

407
408
411
409
407
409
408
408
411
412
414
423
424
423
425
430
429
428
433
438
435
433
431
430

Thursday 25

Waxing Crescent 40%

11:29

No Set

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
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:50, Set: 16:40, Transit: 12:15. Moon - Rise: 11:29, Set: No Set. Civil Dark: 17:13 - 07:16. Nautical Dark: 17:50 - 06:40. Astro Dark: 18:26 - 06:04

Total Clouds (% Sky Obscured)

98
96
93
95
89
89
90
94
91
80
79
74
74
73
72
83
86
71
62
60
60
60
61
57

Low Clouds (% Sky Obscured)

88
80
81
86
84
84
87
93
86
80
79
74
61
72
62
82
86
71
62
60
60
60
61
57

Medium Clouds (% Sky Obscured)

91
89
85
84
61
57
57
40
34
23
6
19
35
35
40
45
45
4
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
15
2
19
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
0
0
1
6
9
9
9
9
8
5
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

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

Precipitation Probability (%)

95
95
95
92
65
42
16
24
13
9
10
9
23
11
6
3
2
4
6
3
3
2
2
2

Precipitation Amount (mm)

1.3
1.1
0.8
0.7
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-5
-5
-6
-6
-7
-7
-6
-6
-6
-6
-6
-5
-5
-5
-5
-5
-5
-6
-6
-7
-7
-7
-7
-7

Feels Like (°C)

-11
-11
-12
-12
-13
-13
-13
-13
-13
-14
-13
-13
-12
-12
-12
-12
-12
-13
-13
-13
-13
-14
-13
-13

Dew Point (°C)

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

Relative Humidity (%)

92
92
90
92
89
87
85
82
79
77
79
76
74
76
76
75
76
77
79
80
82
80
82
83

Pressure (mb)

1000
1000
1000
1001
1002
1003
1004
1005
1006
1007
1009
1010
1010
1010
1010
1011
1013
1014
1015
1016
1017
1017
1017
1017

Ozone (du)

416
399
392
392
395
399
402
401
404
400
398
394
398
412
412
412
408
394
390
382
372
369
370
369

Friday 26

Waxing Crescent 52%

11:48

23:40

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
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:50, Set: 16:41, Transit: 12:15. Moon - Rise: 11:48, Set: 23:40. Civil Dark: 17:14 - 07:17. Nautical Dark: 17:51 - 06:40. Astro Dark: 18:26 - 06:04

Total Clouds (% Sky Obscured)

62
66
70
72
77
81
80
74
65
86
95
84
84
74
89
88
51
46
83
90
92
94
93
90

Low Clouds (% Sky Obscured)

62
66
70
59
54
46
50
51
53
69
88
71
75
69
85
85
51
46
81
84
80
92
90
69

Medium Clouds (% Sky Obscured)

0
0
0
20
43
60
42
27
9
13
16
19
25
34
40
25
11
0
5
13
40
64
62
64

High Clouds (% Sky Obscured)

6
11
16
39
63
81
65
39
13
42
71
84
84
74
89
67
33
0
0
0
0
0
0
5

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
0
0
0
0
0
1
0
0
1
1
2
2
10
0
1
1
1
2
1
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-12
-10
-10
-9
-9
-10
-10
-10
-11
-12
-12
-12
-13

Dew Point (°C)

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

Relative Humidity (%)

82
83
82
82
82
80
80
77
79
79
80
77
75
75
73
73
75
75
79
79
79
79
79
77

Pressure (mb)

1018
1018
1018
1018
1019
1019
1019
1019
1019
1020
1020
1020
1019
1019
1019
1018
1019
1019
1019
1019
1019
1019
1019
1018

Ozone (du)

368
368
366
364
361
359
358
359
359
355
353
358
361
362
363
368
368
366
368
379
375
370
367
368

Saturday 27

First Quarter 63%

12:08

00:53

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

Sun - Rise: 07:50, Set: 16:41, Transit: 12:16. Moon - Rise: 12:08, Set: 00:53. Civil Dark: 17:15 - 07:17. Nautical Dark: 17:52 - 06:40. Astro Dark: 18:27 - 06:05

Total Clouds (% Sky Obscured)

85
81
80
77
73
65
70
70
18
48
74
72
22
10
6
0
0
0
2
10
19
38
40
35

Low Clouds (% Sky Obscured)

31
13
48
61
48
5
3
3
2
3
5
7
6
5
5
0
0
0
1
1
0
0
0
0

Medium Clouds (% Sky Obscured)

63
66
65
70
70
65
70
65
6
6
6
6
6
0
0
0
0
0
2
7
13
21
19
21

High Clouds (% Sky Obscured)

5
0
5
5
5
5
5
5
0
3
40
25
5
2
0
0
0
0
2
7
8
9
9
9

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 (%)

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 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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-13
-13
-13
-14
-13
-14
-14
-14
-14
-13
-13
-12
-11
-9
-8
-7
-7
-7
-7
-8
-8
-8
-11
-11

Dew Point (°C)

-10
-10
-10
-10
-10
-10
-11
-11
-12
-12
-13
-12
-11
-11
-11
-10
-10
-10
-10
-10
-11
-11
-11
-11

Relative Humidity (%)

77
79
80
82
83
83
78
78
77
75
68
64
62
60
57
59
66
73
82
82
83
87
87
87

Pressure (mb)

1018
1018
1017
1017
1017
1017
1016
1016
1016
1016
1016
1015
1015
1014
1013
1012
1013
1013
1013
1013
1013
1013
1012
1012

Ozone (du)

370
373
372
372
379
380
376
377
375
371
370
371
375
377
380
373
375
376
377
376
375
373
371
368

Sunday 28

Waxing Gibbous 74%

12:31

02:10

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
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:50, Set: 16:42, Transit: 12:16. Moon - Rise: 12:31, Set: 02:10. Civil Dark: 17:15 - 07:17. Nautical Dark: 17:52 - 06:40. Astro Dark: 18:28 - 06:05

Total Clouds (% Sky Obscured)

55
73
91
94
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
85
73
60

Low Clouds (% Sky Obscured)

0
0
0
1
1
4
37
70
98
98
97
97
98
99
100
100
100
100
95
90
87
76
59
42

Medium Clouds (% Sky Obscured)

52
69
86
81
77
73
83
92
100
99
99
97
98
98
98
87
76
68
52
31
16
19
22
28

High Clouds (% Sky Obscured)

12
16
35
60
83
100
91
89
84
92
96
95
85
76
85
56
44
40
70
90
100
67
33
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
6
3
0
0
0
0
0
0
0
3
6
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
Snow
Snow
Snow
Snow
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Sleet
None

Precipitation Probability (%)

0
0
0
5
8
10
14
18
25
32
41
54
92
95
95
95
95
95
95
95
95
95
77
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.6
1
1.5
1.7
2.1
2.7
2.3
2
2
1.2
0.5
0

Wind Speed/Direction (mph)

2
2
3
3
2
2
2
4
5
7
8
10
11
13
13
14
12
15
18
15
13
13
12
11

Chance of Frost

Temperature (°C)

-10
-9
-8
-7
-7
-6
-6
-5
-4
-3
-2
-1
1
2
2
3
3
4
4
4
3
3
2
0

Feels Like (°C)

-11
-11
-12
-13
-11
-11
-10
-11
-11
-12
-6
-5
-5
-5
-4
-4
-1
-0
0
2
3
4
-3
-4

Dew Point (°C)

-12
-11
-10
-9
-8
-8
-7
-6
-4
-4
-3
-1
0
1
2
3
2
2
2
1
0
-1
-3
-5

Relative Humidity (%)

87
87
85
85
87
89
92
92
96
96
96
98
98
98
98
98
93
89
86
83
80
77
74
71

Pressure (mb)

1011
1010
1010
1009
1008
1007
1007
1006
1005
1003
1002
1000
998
996
993
990
989
987
985
985
985
985
986
987

Ozone (du)

366
366
366
367
369
371
373
373
373
372
370
368
366
366
366
366
368
370
372
373
373
374
375
376

Monday 29

Waxing Gibbous 84%

13:00

03:30

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
17 Bad
18 Bad
19 Bad

Sun - Rise: 07:51, Set: 16:43, Transit: 12:17. Moon - Rise: 13:00, Set: 03:30. Civil Dark: 17:16 - 07:17. Nautical Dark: 17:53 - 06:40. Astro Dark: 18:29 - 06:05

Total Clouds (% Sky Obscured)

61
71
64
78
82
88
87
85
86
82
69
63
75
87
100
100
99
99
90
80
71

Low Clouds (% Sky Obscured)

45
52
64
78
82
85
87
85
86
82
69
63
75
87
100
97
95
92
84
75
65

Medium Clouds (% Sky Obscured)

19
8
0
3
7
12
34
52
68
50
32
19
33
50
67
63
59
50
36
22
10

High Clouds (% Sky Obscured)

0
0
0
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
6
3
0
3
6
9
9
9
9
9
9
9
8
7
6
7
8

Fog (%)

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

Precipitation Probability (%)

6
6
2
9
17
22
35
44
50
45
41
40
41
41
37
37
34
29
28
23
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
10
9
9
9
9
9
10
11
12
13
13
14
14
14
14
13
12
12
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-5
-5
-5
-7
-7
-7
-7
-7
-7
-6
-7
-8
-8
-8
-7
-7
-8
-8
-8
-8

Dew Point (°C)

-6
-6
-6
-6
-5
-5
-4
-5
-6
-7
-6
-6
-6
-6
-7
-7
-6
-6
-6
-6
-7

Relative Humidity (%)

68
74
79
82
86
89
91
86
78
72
72
71
71
70
67
67
71
74
78
76
75

Pressure (mb)

988
989
989
990
990
990
990
991
991
992
992
993
993
993
993
993
994
994
995
996
997

Ozone (du)

376
380
384
387
394
400
407
410
412
415
418
421
424
431
439
447
453
458
463
460
457

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

Generated: 23/12/25 22:57:37. Forecast: 23/12/25 to 29/12/25. Timezone: UTC-4.00