Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 26

Waxing Crescent 41%

11:34

23:47

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
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
04 OK

Sun - Rise: 07:55, Set: 16:43, Transit: 12:19. Moon - Rise: 11:34, Set: 23:47. Civil Dark: 17:16 - 07:21. Nautical Dark: 17:53 - 06:44. Astro Dark: 18:29 - 06:08

Total Clouds (% Sky Obscured)

85
88
91
100
100
100
100
100
100
100
100
100
100
100
97
99
95
88
82
67
64
40
35
22

Low Clouds (% Sky Obscured)

0
4
44
41
100
78
100
100
100
96
100
99
100
90
93
77
89
82
73
67
64
40
35
22

Medium Clouds (% Sky Obscured)

85
88
91
100
100
100
100
100
100
100
98
100
100
90
47
91
40
46
34
19
7
4
0
4

High Clouds (% Sky Obscured)

85
88
91
100
100
100
100
100
100
100
100
100
100
99
4
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
7
1
1
1
0
0
2
0
1
0
0
0
0
0
0
1
6
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
7
38
58
56
95
95
95
95
95
95
95
95
83
58
47
29
14
8
6
3
0
0
0

Precipitation Amount (mm)

0
0
0
0.3
0.1
1
1.3
0.8
0.7
0.8
0.6
0.7
0.8
0.5
0.2
0.1
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
8
8
8
12
12
12
11
11
11
11
11
10
9
8
6
7
7
8
7
5
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
74
76
81
81
81
85
86
85
85
86
86
88
90
88
90
88
88
86
85
85
86
84
84

Pressure (mb)

1026
1026
1025
1025
1023
1021
1019
1018
1016
1015
1013
1013
1013
1013
1013
1014
1015
1015
1016
1016
1017
1018
1019
1020

Ozone (du)

291
293
293
293
294
295
302
307
309
310
309
313
312
313
317
328
336
336
338
338
344
343
343
341

Saturday 27

First Quarter 52%

11:52

01:00

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

Sun - Rise: 07:55, Set: 16:43, Transit: 12:19. Moon - Rise: 11:52, Set: 01:00. Civil Dark: 17:17 - 07:21. Nautical Dark: 17:54 - 06:44. Astro Dark: 18:30 - 06:09

Total Clouds (% Sky Obscured)

14
13
8
6
3
3
3
25
30
33
29
29
30
50
64
57
64
71
72
61
63
88
100
100

Low Clouds (% Sky Obscured)

14
13
7
4
0
0
0
0
0
5
8
5
2
6
8
7
15
18
17
15
4
49
65
64

Medium Clouds (% Sky Obscured)

3
2
2
0
0
0
0
0
0
0
2
7
20
21
20
2
3
20
58
40
44
45
49
64

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
4
4
6
9
5
64
57
64
71
72
61
63
69
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
3
3
3
3
3
3
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-16
-16
-16
-16
-13
-11
-10
-9
-9
-9
-8
-10
-11
-13
-14
-15
-15
-15
-15
-15
-15
-15
-15

Dew Point (°C)

-16
-16
-16
-17
-16
-14
-12
-11
-9
-9
-8
-7
-9
-10
-11
-12
-12
-12
-12
-12
-12
-12
-12
-12

Relative Humidity (%)

84
84
83
82
83
83
81
82
82
80
84
92
90
90
90
90
90
90
90
90
92
90
90
90

Pressure (mb)

1021
1022
1023
1024
1025
1025
1025
1024
1024
1024
1024
1025
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1024

Ozone (du)

340
338
337
336
336
335
336
338
335
332
331
329
325
323
321
321
324
325
325
325
325
323
325
323

Sunday 28

Waxing Gibbous 63%

12:12

02:17

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
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:55, Set: 16:44, Transit: 12:20. Moon - Rise: 12:12, Set: 02:17. Civil Dark: 17:18 - 07:22. Nautical Dark: 17:55 - 06:44. Astro Dark: 18:30 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

57
48
26
46
46
37
18
34
34
58
59
64
66
69
100
100
100
100
100
98
99
99
100
100

Medium Clouds (% Sky Obscured)

74
81
92
81
100
100
100
100
100
100
100
100
97
100
100
100
98
100
100
90
100
100
100
97

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
56
100
100
100
100
100
100
100
100
100
100
83

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
1
2
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
Snow
None
None
Snow
None
Frozen rai
None
None
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
5
14
48
45
36
48
54
57
66
70
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0.1
0
0.2
0
0
0.7
0.7
1.4
1.3
0.8

Wind Speed/Direction (mph)

6
6
7
7
8
8
8
8
8
8
8
8
11
9
9
8
9
9
9
10
9
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-15
-15
-15
-15
-15
-14
-13
-11
-10
-10
-9
-9
-10
-9
-9
-8
-8
-7
-7
-7
-7
-6
-6
-6

Dew Point (°C)

-12
-12
-12
-13
-12
-11
-10
-9
-8
-7
-6
-6
-6
-6
-6
-5
-5
-4
-4
-4
-3
-3
-2
-2

Relative Humidity (%)

90
86
85
83
81
83
83
87
87
89
89
89
89
89
89
89
91
89
89
91
92
94
94
94

Pressure (mb)

1024
1023
1023
1022
1021
1020
1019
1017
1015
1014
1013
1012
1010
1009
1008
1006
1004
1003
1001
999
997
995
993
991

Ozone (du)

325
327
328
327
328
330
328
326
329
328
327
324
324
326
329
332
333
332
332
333
334
334
335
338

Monday 29

Waxing Gibbous 74%

12:35

03:39

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
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:55, Set: 16:45, Transit: 12:20. Moon - Rise: 12:35, 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)

100
100
100
100
100
98
96
94
94
94
94
94
94
95
94
94
93
93
92
94
94
94
94
92

Low Clouds (% Sky Obscured)

100
100
100
100
100
97
95
91
90
89
87
86
86
86
85
85
86
86
86
85
84
85
85
82

Medium Clouds (% Sky Obscured)

93
89
93
96
100
93
42
38
37
40
60
72
79
86
86
85
85
84
84
82
81
78
77
61

High Clouds (% Sky Obscured)

57
25
25
10
7
0
0
0
0
0
0
0
0
0
0
0
0
0
13
30
18
25
25
25

ISS Passover

Visibility (miles)

2
0
0
0
0
0
8
9
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

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

Frozen rai
Frozen rai
Frozen rai
Frozen rai
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None

Precipitation Probability (%)

95
93
95
95
95
75
56
46
60
75
79
69
64
61
62
57
56
50
47
41
37
34
30
34

Precipitation Amount (mm)

0.9
0.5
0.7
0.9
0.9
0.3
0.2
0.1
0.3
0.6
0.6
0.3
0.3
0.2
0.2
0.2
0.2
0.1
0.1
0
0
0
0
0

Wind Speed/Direction (mph)

10
10
10
9
11
14
14
14
15
15
14
13
14
17
18
18
19
19
19
18
18
17
17
17

Chance of Frost

Temperature (°C)

-1
-1
0
-1
-1
-2
-3
-3
-4
-5
-6
-7
-8
-9
-10
-10
-11
-11
-12
-12
-12
-13
-13
-13

Feels Like (°C)

-6
-6
-5
-5
-6
-6
-8
-9
-10
-10
-11
-12
-13
-16
-17
-18
-19
-19
-19
-20
-20
-20
-20
-20

Dew Point (°C)

-1
-1
0
-1
-1
-2
-4
-5
-5
-5
-6
-7
-9
-10
-11
-12
-12
-13
-14
-14
-15
-15
-15
-16

Relative Humidity (%)

98
98
100
100
100
98
91
89
92
96
96
96
94
92
88
88
88
85
85
85
81
81
83
79

Pressure (mb)

989
987
986
985
985
986
986
986
986
987
987
988
989
990
992
993
994
995
996
997
998
999
1000
1001

Ozone (du)

339
340
345
349
360
365
370
377
383
392
394
405
415
418
413
407
402
398
378
368
371
386
399
409

Tuesday 30

Waxing Gibbous 84%

13:05

05:03

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
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:55, Set: 16:46, Transit: 12:21. Moon - Rise: 13:05, 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)

89
85
82
81
80
74
69
63
56
56
52
47
49
56
59
65
65
73
84
95
94
93
93
93

Low Clouds (% Sky Obscured)

81
78
74
72
73
67
60
53
47
45
44
47
40
38
42
46
48
56
65
76
76
78
81
82

Medium Clouds (% Sky Obscured)

40
24
28
20
19
31
34
10
1
2
5
7
10
14
20
25
29
40
55
64
57
51
47
47

High Clouds (% Sky Obscured)

0
0
0
0
0
4
1
0
0
0
0
0
1
1
2
3
3
1
1
2
1
1
0
0

ISS Passover

Visibility (miles)

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

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 (%)

36
35
37
30
21
20
20
8
11
10
2
2
3
3
16
19
21
27
31
34
35
34
32
31

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)

16
16
16
16
16
15
15
15
14
14
14
14
13
11
10
9
8
7
6
5
5
5
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
83
83
84
81
79
78
78
80
80
78
77
75
75
76
76
76
76
78
76
75
75
75
73

Pressure (mb)

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

Ozone (du)

412
413
433
438
439
435
435
435
437
447
443
416
400
392
392
383
375
366
363
360
357
354
350
347

Wednesday 31

Waxing Gibbous 92%

13:43

05:03

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
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:55, Set: 16:47, Transit: 12:21. Moon - Rise: 13:43, Set: 05:03. Civil Dark: 17:20 - 07:22. Nautical Dark: 17:57 - 06:45. Astro Dark: 18:33 - 06:09

Total Clouds (% Sky Obscured)

91
90
70
51
33
47
60
71
64
53
30
26
17
17
43
69
95
94
93
92
91
91
91
96

Low Clouds (% Sky Obscured)

84
84
68
51
33
47
60
71
64
53
30
26
17
17
43
69
81
81
81
81
84
86
88
91

Medium Clouds (% Sky Obscured)

51
52
37
24
12
7
4
3
3
3
3
2
1
0
24
50
76
74
74
71
65
61
55
70

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
12

ISS Passover

Visibility (miles)

8
9
9
7
6
4
3
2
1
1
1
0
1
1
1
1
1
1
2
3
4
4
4
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

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 (%)

30
25
25
24
18
23
24
22
26
24
23
24
24
23
27
28
26
30
30
26
34
34
34
39

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
6
6
7
8
9
9
9
9
10
10
10
8
7
6
5
5
5
5
4
4
4
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
72
71
72
73
76
77
78
79
81
83
84
83
83
82
81
81
81
81
81
81
79
79
81

Pressure (mb)

1006
1006
1006
1007
1007
1008
1008
1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1007
1007
1007
1007
1007
1007
1007

Ozone (du)

352
357
362
366
370
375
377
378
380
384
388
391
399
406
414
413
413
412
412
412
413
419
425
432

Thursday 1

Waxing Gibbous 98%

14:35

06:24

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
23 Bad
00 Bad

Sun - Rise: 07:55, Set: 16:48, Transit: 12:22. Moon - Rise: 14:35, Set: 06:24. Civil Dark: 17:21 - 07:22. Nautical Dark: 17:58 - 06:45. Astro Dark: 18:34 - 06:10

Total Clouds (% Sky Obscured)

98
100
98
96
94
96
96
97
98
98
99
100
100
100
100
100
100
100
99
99

Low Clouds (% Sky Obscured)

95
100
98
96
94
96
96
97
95
92
88
92
96
100
100
99
99
96
93
91

Medium Clouds (% Sky Obscured)

86
100
97
93
88
71
50
33
33
33
32
26
20
12
7
9
14
19
25
30

High Clouds (% Sky Obscured)

26
35
19
6
4
3
2
1
14
32
48
40
24
1
2
4
7
3
4
8

ISS Passover

Visibility (miles)

4
4
4
3
2
1
2
3
4
3
3
2
1
1
0
0
0
1
1
1

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

Precipitation Probability (%)

41
41
52
57
62
62
62
62
56
51
45
47
49
54
56
62
74
63
50
39

Precipitation Amount (mm)

0
0
0.2
0.3
0.3
0.4
0.4
0.5
0.3
0.2
0.1
0.1
0.1
0.1
0.2
0.3
0.6
0.4
0.2
0

Wind Speed/Direction (mph)

5
6
6
7
7
7
9
11
13
13
13
13
12
11
9
9
10
10
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
79
79
81
81
83
81
78
77
80
80
82
85
87
90
88
87
85
85
85

Pressure (mb)

1007
1008
1008
1008
1008
1009
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009
1009
1009
1009

Ozone (du)

418
405
392
383
374
365
362
359
356
354
353
351
349
347
345
345
345
345
343
342

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

Generated: 26/12/25 04:52:37. Forecast: 26/12/25 to 01/01/26. Timezone: UTC-5.00