Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 29

Waxing Gibbous 74%

13:05

03:39

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 OK
15 OK
16 OK

Sun - Rise: 07:55, Set: 16:46, Transit: 12:21. Moon - Rise: 13:05, Set: 03:39. Civil Dark: 17:18 - 07:22. Nautical Dark: 17:56 - 06:45. Astro Dark: 18:31 - 06:09

Total Clouds (% Sky Obscured)

98
98
95
94
93
100
100
100
100
100
100
100
100
100
100
100
100
74
79
48
49
38
35
17

Low Clouds (% Sky Obscured)

86
84
74
85
84
83
84
85
84
85
86
84
86
84
84
85
70
70
70
48
49
38
35
17

Medium Clouds (% Sky Obscured)

80
95
79
83
42
91
100
100
87
79
97
86
57
57
57
65
33
4
41
1
0
0
1
0

High Clouds (% Sky Obscured)

13
37
14
1
70
31
75
65
55
60
70
80
85
95
100
10
14
4
8
8
0
0
0
0

ISS Passover

Visibility (miles)

0
0
2
1
5
7
2
1
0
1
3
1
0
0
0
0
2
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
1
4
3
4
20
31

Precipitation Type

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

Precipitation Probability (%)

7
0
42
33
35
37
43
42
47
43
48
50
47
41
40
31
33
16
17
7
7
0
0
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-18
-19
-19
-20
-20
-21
-21
-22
-21
-22
-22
-22
-22
-22
-22
-22
-21
-20
-19
-18
-17
-17
-17

Dew Point (°C)

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

Relative Humidity (%)

87
81
78
79
76
74
76
78
77
77
76
77
81
82
81
80
77
75
76
74
76
75
72
72

Pressure (mb)

993
994
996
998
999
1000
1001
1001
1002
1004
1004
1005
1005
1006
1006
1007
1007
1007
1007
1007
1006
1006
1006
1006

Ozone (du)

394
394
389
367
365
376
377
376
383
395
397
415
427
425
422
433
441
453
466
462
457
456
444
428

Tuesday 30

Waxing Gibbous 84%

13:43

05:03

17 OK
18 OK
19 OK
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: 07:55, Set: 16:47, Transit: 12:21. Moon - Rise: 13:43, Set: 05:03. Civil Dark: 17:19 - 07:22. Nautical Dark: 17:56 - 06:45. Astro Dark: 18:32 - 06:09

Total Clouds (% Sky Obscured)

28
24
30
47
83
72
79
78
59
58
85
83
83
85
94
100
99
100
97
97
100
100
100
100

Low Clouds (% Sky Obscured)

28
24
30
42
72
72
67
64
37
28
27
10
55
38
68
70
82
82
83
90
85
86
88
90

Medium Clouds (% Sky Obscured)

8
2
2
2
5
21
22
4
45
46
63
78
66
77
86
100
94
100
91
86
100
99
100
100

High Clouds (% Sky Obscured)

4
0
5
4
83
8
70
78
59
49
9
5
4
5
4
5
8
69
53
70
4
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
8
7
8
6
8
9
8
8
7
4
0
0
2
6
4

Fog (%)

26
15
7
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
5
6

Precipitation Type

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

Precipitation Probability (%)

4
6
9
9
9
8
9
7
9
12
11
20
10
8
10
8
11
31
44
51
46
36
44
46

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
12
11
11
10
8
6
5
5
5
4
4
4
2
2
2
3
3
4
5
6
6
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-16
-15
-15
-15
-16
-15
-16
-16
-16
-16
-17
-17
-17
-18
-18
-17
-17
-16
-15
-16
-15
-15
-15

Dew Point (°C)

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

Relative Humidity (%)

70
69
70
73
77
78
80
81
81
81
83
84
83
86
84
84
79
75
78
81
85
80
80
81

Pressure (mb)

1006
1007
1006
1006
1006
1006
1005
1005
1005
1005
1005
1004
1004
1004
1005
1004
1004
1004
1004
1003
1002
1001
1001
1001

Ozone (du)

412
403
400
394
379
377
378
381
379
381
389
400
398
395
401
409
407
410
414
414
414
417
425
435

Wednesday 31

Waxing Gibbous 92%

14:35

06:24

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
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: 07:55, Set: 16:48, Transit: 12:22. Moon - Rise: 14:35, Set: 06:24. Civil Dark: 17:20 - 07:22. Nautical Dark: 17:57 - 06:45. Astro Dark: 18:33 - 06:10

Total Clouds (% Sky Obscured)

97
100
100
73
56
33
68
67
57
40
50
57
62
65
55
46
36
64
88
100
100
100
100
100

Low Clouds (% Sky Obscured)

67
68
75
61
55
33
42
3
5
19
26
31
27
2
4
5
1
50
81
100
100
100
100
100

Medium Clouds (% Sky Obscured)

96
100
98
54
36
3
41
56
51
3
50
45
19
20
16
38
30
40
40
37
38
39
45
45

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
4
2
1
15
10
6
0
32
64
65
65
40
20
0
0

ISS Passover

Visibility (miles)

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

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
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

42
30
17
11
13
8
11
10
10
8
15
3
1
2
2
3
8
15
31
53
58
66
67
66

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.3
0.3
0.3

Wind Speed/Direction (mph)

6
6
6
6
7
8
7
6
4
3
2
3
2
2
2
3
6
5
4
4
3
2
1
1

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-16
-17
-18
-18
-18
-18
-20
-21
-21
-22
-23
-23
-24
-24
-24
-23
-21
-19
-18
-16
-16
-15
-14

Dew Point (°C)

-13
-14
-15
-15
-16
-17
-18
-19
-20
-21
-21
-21
-22
-23
-23
-23
-24
-22
-20
-18
-16
-15
-13
-12

Relative Humidity (%)

81
81
78
78
78
77
76
77
79
80
80
81
80
78
77
75
68
68
71
77
81
83
85
86

Pressure (mb)

1002
1002
1003
1003
1004
1004
1005
1005
1006
1007
1008
1008
1008
1009
1010
1010
1009
1009
1009
1009
1008
1007
1007
1007

Ozone (du)

447
454
453
448
444
417
403
393
379
377
372
364
358
353
346
341
345
355
364
377
379
378
372
360

Thursday 1

Waxing Gibbous 98%

15:42

07:36

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: 07:55, Set: 16:49, Transit: 12:22. Moon - Rise: 15:42, Set: 07:36. Civil Dark: 17:21 - 07:22. Nautical Dark: 17:58 - 06:45. Astro Dark: 18:34 - 06:10

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

50
50
50
55
55
55
55
60
65
65
65
65
65
65
60
60
55
60
60
65
48
34
16
28

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
0
0
0

ISS Passover

Visibility (miles)

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

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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

72
70
70
73
82
78
73
72
68
71
70
73
66
65
63
65
69
67
68
75
69
64
61
63

Precipitation Amount (mm)

0.5
0.5
0.5
0.5
0.7
0.6
0.5
0.6
0.4
0.6
0.8
0.7
0.5
0.5
0.4
0.5
0.6
0.5
0.5
0.7
0.5
0.4
0.4
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
88
92
90
90
90
90
80
87
87
90
88
90
87
87
87
87
85
85
87
87
90
85
82

Pressure (mb)

1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006

Ozone (du)

358
357
348
346
358
381
372
362
350
340
342
353
360
365
367
364
359
360
362
365
364
361
361
357

Friday 2

Waxing Gibbous 100%

17:00

08:32

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

Sun - Rise: 07:55, Set: 16:50, Transit: 12:22. Moon - Rise: 17:00, Set: 08:32. Civil Dark: 17:22 - 07:22. Nautical Dark: 17:59 - 06:45. Astro Dark: 18:34 - 06:10

Total Clouds (% Sky Obscured)

100
100
100
98
100
95
97
96
93
75
53
62
61
49
34
19
7
12
16
20
27
33
33
20

Low Clouds (% Sky Obscured)

100
100
100
98
100
91
88
82
82
69
52
54
57
43
30
17
4
7
10
14
27
33
33
20

Medium Clouds (% Sky Obscured)

41
54
56
54
52
48
44
40
39
34
33
22
10
2
2
2
3
7
10
13
23
31
33
20

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
0
0
0

ISS Passover

Visibility (miles)

4
0
0
4
6
8
1
0
0
6
9
8
5
7
9
9
9
9
9
9
9
9
9
8

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

Precipitation Probability (%)

65
55
62
64
63
63
60
57
50
38
11
14
12
4
8
8
3
8
9
4
13
14
5
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-8
-8
-8
-9
-9
-9
-10
-11
-11
-12
-14
-16
-17
-18
-20
-19
-19
-20
-19
-18
-18
-18
-17
-17

Feels Like (°C)

-13
-13
-13
-14
-15
-15
-14
-15
-15
-16
-18
-18
-20
-21
-22
-23
-25
-27
-27
-27
-27
-21
-21
-21

Dew Point (°C)

-10
-9
-9
-11
-13
-12
-12
-12
-12
-14
-16
-18
-20
-21
-22
-22
-23
-23
-22
-22
-21
-21
-20
-19

Relative Humidity (%)

82
88
92
80
74
80
88
92
92
86
84
83
80
80
78
77
76
74
75
75
74
77
80
83

Pressure (mb)

1007
1007
1008
1008
1008
1008
1009
1009
1009
1011
1012
1013
1014
1015
1016
1017
1017
1018
1018
1018
1017
1018
1018
1018

Ozone (du)

353
351
346
348
353
355
357
358
359
359
356
354
351
353
356
357
358
359
360
361
362
364
366
368

Saturday 3

Full Moon 99%

17:00

09:14

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: 07:55, Set: 16:51, Transit: 12:23. Moon - Rise: 17:00, Set: 09:14. Civil Dark: 17:23 - 07:22. Nautical Dark: 18:00 - 06:45. Astro Dark: 18:35 - 06:10

Total Clouds (% Sky Obscured)

20
19
34
49
66
69
72
73
69
63
58
67
79
87
86
86
86
87
87
90
90
88
87
69

Low Clouds (% Sky Obscured)

20
13
27
43
54
56
57
59
53
46
43
41
40
42
45
47
49
46
47
45
52
61
70
69

Medium Clouds (% Sky Obscured)

19
14
26
34
38
30
27
28
22
20
20
28
45
75
77
79
76
75
78
76
76
72
73
69

High Clouds (% Sky Obscured)

0
0
3
5
8
5
3
0
6
9
12
24
37
50
41
23
11
8
8
11
5
4
1
3

ISS Passover

Visibility (miles)

8
7
6
4
3
1
3
5
8
8
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 (%)

16
8
23
24
16
23
22
13
14
12
3
5
5
0
2
5
8
19
24
28
28
27
24
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
0
0
0

Wind Speed/Direction (mph)

4
3
2
2
2
3
2
2
2
3
3
4
4
3
3
3
3
3
3
4
4
4
4
3

Chance of Frost

Temperature (°C)

-18
-18
-19
-19
-19
-20
-20
-21
-21
-22
-22
-22
-22
-23
-23
-21
-20
-18
-16
-15
-13
-13
-12
-11

Feels Like (°C)

-19
-17
-15
-23
-23
-23
-22
-22
-22
-25
-24
-25
-24
-25
-25
-26
-26
-26
-25
-25
-24
-14
-14
-13

Dew Point (°C)

-20
-20
-21
-21
-22
-22
-22
-23
-23
-24
-24
-25
-25
-25
-26
-24
-23
-21
-20
-18
-17
-16
-15
-13

Relative Humidity (%)

82
83
83
82
83
83
80
80
79
78
78
76
77
77
76
75
77
77
75
75
74
78
81
86

Pressure (mb)

1019
1019
1020
1020
1020
1021
1021
1021
1021
1022
1022
1023
1023
1023
1024
1024
1024
1024
1023
1022
1022
1021
1021
1020

Ozone (du)

367
365
364
361
358
355
352
348
345
342
339
336
333
331
329
330
330
331
333
336
338
336
334
333

Sunday 4

Waning Gibbous 95%

18:23

09:46

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

Sun - Rise: 07:55, Set: 16:52, Transit: 12:23. Moon - Rise: 18:23, Set: 09:46. Civil Dark: 17:24 - 07:22. Nautical Dark: 18:01 - 06:45. Astro Dark: 18:36 - 06:10

Total Clouds (% Sky Obscured)

65
58
63
79
94
96
97
99
99
99
100
100
100
100
100
100
99
98
98
97

Low Clouds (% Sky Obscured)

65
58
63
58
60
57
53
49
65
74
81
84
87
90
86
85
83
78
73
68

Medium Clouds (% Sky Obscured)

64
58
63
73
85
86
88
89
90
91
92
93
93
94
98
98
97
94
90
86

High Clouds (% Sky Obscured)

5
7
24
52
73
79
81
80
78
74
75
57
34
21
18
15
16
3
2
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
5
3
0
0
0
0
0
0
0
0
0

Fog (%)

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

Precipitation Probability (%)

29
31
29
25
19
16
11
5
12
18
20
31
35
36
37
35
30
30
29
26

Precipitation Amount (mm)

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
4
4
4
4
4
4
4
5
5
5
6
6
6
6
6
6
6
6
6

Chance of Frost

Temperature (°C)

-12
-13
-15
-15
-15
-15
-15
-14
-14
-14
-13
-13
-12
-12
-12
-11
-10
-10
-9
-7

Feels Like (°C)

-12
-11
-9
-17
-18
-19
-20
-20
-20
-18
-19
-19
-18
-18
-18
-16
-16
-15
-15
-15

Dew Point (°C)

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

Relative Humidity (%)

84
83
82
82
84
82
84
84
84
84
88
88
88
88
88
88
88
88
90
88

Pressure (mb)

1020
1020
1021
1020
1020
1019
1019
1018
1018
1018
1017
1017
1016
1016
1015
1015
1015
1015
1014
1013

Ozone (du)

332
332
332
334
336
338
338
338
338
339
340
341
343
345
348
353
358
364
365
365

Forecast for Glen Echo, Canada (44.94,-79.51)

Generated: 29/12/25 16:33:27. Forecast: 29/12/25 to 04/01/26. Timezone: UTC-5.00