Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 27

Waxing Crescent 47%

13:11

23:34

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
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 07:33, Set: 16:39, Transit: 12:06. Moon - Rise: 13:11, Set: 23:34. Civil Dark: 17:12 - 07:00. Nautical Dark: 17:48 - 06:24. Astro Dark: 18:23 - 05:49

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
92
95
99
100
97
98
98
97
97
100
100
99
99
99
95
100
100
100

Low Clouds (% Sky Obscured)

87
100
100
100
100
100
73
68
70
69
70
70
72
73
70
82
73
70
73
84
73
70
70
69

Medium Clouds (% Sky Obscured)

99
100
100
100
100
100
83
86
88
99
90
95
93
90
91
97
100
94
96
93
82
99
95
99

High Clouds (% Sky Obscured)

5
17
18
13
31
3
3
4
3
0
0
4
5
26
1
72
92
89
85
86
91
100
77
24

ISS Passover

Visibility (miles)

1
2
1
1
0
0
0
4
5
4
6
6
7
7
3
1
1
0
0
0
1
1
2
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
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
Snow
Snow
Snow
None
Snow
None
None
None

Precipitation Probability (%)

5
0
56
62
59
60
56
42
39
34
42
36
43
39
45
45
49
47
44
39
45
38
41
32

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-1
-1
-2
-1
-2
-2
-2
-3
-3
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-3
-3
-2

Feels Like (°C)

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

Dew Point (°C)

-4
-4
-4
-3
-3
-3
-3
-4
-5
-6
-5
-6
-6
-6
-6
-5
-6
-6
-6
-6
-6
-5
-5
-5

Relative Humidity (%)

80
81
84
87
91
92
92
89
87
86
87
86
86
86
85
89
85
87
87
85
84
84
81
79

Pressure (mb)

1003
1004
1004
1005
1005
1005
1005
1005
1005
1005
1006
1006
1006
1007
1007
1007
1008
1008
1009
1010
1010
1011
1011
1012

Ozone (du)

361
362
363
366
369
370
372
372
370
369
369
368
368
366
363
359
355
353
348
346
345
342
340
340

Friday 28

First Quarter 58%

13:29

00:46

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

Sun - Rise: 07:34, Set: 16:39, Transit: 12:06. Moon - Rise: 13:29, Set: 00:46. Civil Dark: 17:11 - 07:01. Nautical Dark: 17:48 - 06:25. Astro Dark: 18:23 - 05:50

Total Clouds (% Sky Obscured)

94
97
94
85
88
80
64
63
44
29
26
26
20
9
9
10
9
26
61
69
99
90
99
99

Low Clouds (% Sky Obscured)

75
67
50
42
35
31
39
44
44
29
26
26
20
6
3
2
2
2
4
8
22
25
38
68

Medium Clouds (% Sky Obscured)

81
90
88
78
42
36
13
10
7
0
0
0
0
0
0
0
0
9
13
12
91
47
92
48

High Clouds (% Sky Obscured)

13
15
5
46
0
0
0
0
0
0
0
0
0
0
0
4
4
19
53
63
52
32
28
94

ISS Passover

Visibility (miles)

5
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
7
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 (%)

26
9
8
9
8
6
7
5
5
3
3
2
4
5
5
5
5
3
4
1
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)

15
15
14
13
12
11
11
10
10
9
8
8
7
7
6
5
5
4
3
3
3
3
4
4

Chance of Frost

Temperature (°C)

-2
-2
-2
-3
-3
-3
-3
-4
-4
-4
-5
-5
-6
-6
-6
-6
-7
-7
-7
-6
-5
-4
-3
-3

Feels Like (°C)

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

Dew Point (°C)

-5
-6
-6
-7
-7
-7
-8
-7
-8
-8
-8
-8
-8
-9
-9
-9
-9
-9
-9
-10
-10
-9
-9
-9

Relative Humidity (%)

78
75
75
72
71
71
72
75
75
76
77
79
80
80
80
82
84
85
85
76
69
66
64
62

Pressure (mb)

1012
1013
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1026
1027
1028
1028
1029
1030
1031
1031
1030
1030

Ozone (du)

339
340
347
351
356
358
357
357
357
357
356
352
350
350
350
348
347
348
347
347
347
348
347
343

Saturday 29

Waxing Gibbous 69%

13:49

02:01

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
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 07:35, Set: 16:38, Transit: 12:07. Moon - Rise: 13:49, Set: 02:01. Civil Dark: 17:11 - 07:03. Nautical Dark: 17:48 - 06:26. Astro Dark: 18:23 - 05:51

Total Clouds (% Sky Obscured)

80
92
100
97
100
100
100
100
100
100
100
100
100
100
100
100
99
99
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

64
68
52
25
50
81
92
95
97
98
99
97
99
98
97
96
95
96
98
100
98
96
94
96

Medium Clouds (% Sky Obscured)

51
49
48
95
99
100
100
100
100
100
100
100
100
100
100
100
98
99
99
100
100
100
100
99

High Clouds (% Sky Obscured)

42
82
87
69
64
100
100
100
100
100
100
100
100
100
72
35
2
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
0
0
0
0
0
0
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
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

0
1
1
2
5
11
28
44
57
88
95
95
95
95
95
95
95
95
95
95
95
95
91
82

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0.2
0.5
0.7
1
0.9
1
0.8
0.8
0.8
0.8
0.9
0.9
0.9
0.9
0.5
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-2
-2
-2
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-2
-2
-2
-1
-1
-0
0
1
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
56
71
86
87
84
84
82
86
89
94
94
96
94
96
96
96
96
96
96
96
98
98
98

Pressure (mb)

1029
1029
1029
1029
1029
1029
1028
1027
1026
1026
1025
1023
1022
1020
1018
1016
1014
1013
1012
1010
1009
1008
1007
1006

Ozone (du)

340
338
339
339
343
344
344
344
344
345
345
346
349
355
361
363
369
372
374
381
379
382
385
389

Sunday 30

Waxing Gibbous 79%

No Rise

03:18

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
10 Bad
11 OK
12 Bad
13 Bad

Sun - Rise: 07:37, Set: 16:38, Transit: 12:07. Moon - Rise: No Rise, Set: 03:18. Civil Dark: 17:11 - 07:04. Nautical Dark: 17:47 - 06:27. Astro Dark: 18:23 - 05:52

Total Clouds (% Sky Obscured)

99
99
99
100
100
96
92
88
91
96
100
100
99
99
99
100
98
83
77
72
60
31
60
59

Low Clouds (% Sky Obscured)

97
98
97
96
95
90
85
78
76
76
74
71
68
68
69
69
67
63
64
63
51
29
44
40

Medium Clouds (% Sky Obscured)

99
98
96
98
100
81
29
10
27
46
65
59
57
51
57
59
65
43
23
0
0
0
1
6

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

2
0
4
1
0
0
0
1
4
9
7
4
0
0
0
0
0
7
1
0
5
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
Snow
Snow
Snow
None
None
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

76
72
71
85
92
77
61
47
47
40
33
55
59
53
51
43
27
16
27
21
12
10
10
4

Precipitation Amount (mm)

0.4
0.3
0.4
0.7
0.8
0.6
0.3
0.1
0.1
0
0
0.3
0.3
0.3
0.2
0.1
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
11
14
14
13
15
14
13
13
13
12
10
8
7
7
6
5
4
6
6
6
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
77
93
96
94
92
87
81
68
76
81
94
92
92
90
90
92
90
90
80
74
76
73

Pressure (mb)

1005
1006
1006
1007
1008
1009
1011
1012
1013
1014
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1027
1027

Ozone (du)

398
408
412
415
415
410
404
401
403
409
407
404
398
395
395
401
401
399
394
394
395
394
393
394

Monday 1

Waxing Gibbous 88%

14:11

04:41

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
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 07:38, Set: 16:37, Transit: 12:07. Moon - Rise: 14:11, Set: 04:41. Civil Dark: 17:10 - 07:05. Nautical Dark: 17:47 - 06:28. Astro Dark: 18:22 - 05:52

Total Clouds (% Sky Obscured)

61
56
71
78
85
89
95
100
100
100
100
86
94
100
100
100
100
98
95
92
94
97
99
99

Low Clouds (% Sky Obscured)

41
36
59
54
68
77
70
77
67
51
37
72
72
73
57
42
32
52
70
84
85
87
89
93

Medium Clouds (% Sky Obscured)

9
2
33
36
40
60
82
100
100
100
100
70
85
100
98
96
94
82
71
60
68
80
87
84

High Clouds (% Sky Obscured)

0
4
7
9
7
41
74
100
100
100
100
36
68
99
99
100
100
77
54
34
52
70
89
85

ISS Passover

Visibility (miles)

8
9
9
9
9
9
9
9
6
2
2
9
8
7
6
5
4
2
2
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
None
None
None
Snow
Snow

Precipitation Probability (%)

8
3
5
6
3
8
13
11
13
17
6
9
9
1
6
10
15
18
18
16
29
36
42
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
0.1
0.1

Wind Speed/Direction (mph)

7
6
5
3
2
3
4
5
6
6
7
7
6
6
6
6
6
6
7
7
7
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
73
83
90
90
90
90
88
88
90
90
90
90
90
88
88
88
86
88
88
90
90
92
92

Pressure (mb)

1027
1027
1027
1027
1028
1028
1027
1027
1026
1026
1025
1025
1027
1026
1026
1025
1025
1024
1024
1023
1022
1021
1019
1018

Ozone (du)

394
394
393
390
387
385
383
383
380
381
381
382
379
377
374
373
372
370
370
370
370
369
367
365

Tuesday 2

Waxing Gibbous 95%

14:37

06:07

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
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 07:39, Set: 16:37, Transit: 12:08. Moon - Rise: 14:37, Set: 06:07. Civil Dark: 17:10 - 07:06. Nautical Dark: 17:47 - 06:29. Astro Dark: 18:22 - 05:53

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
99
99
100
100
100
100
99
99
98
94
90
86
90
95
99
96

Low Clouds (% Sky Obscured)

92
94
92
91
91
90
92
94
96
97
99
94
91
88
90
91
93
90
87
84
89
93
97
91

Medium Clouds (% Sky Obscured)

80
73
54
31
12
4
2
0
0
0
0
4
7
10
12
16
19
17
15
13
15
17
14
29

High Clouds (% Sky Obscured)

78
71
62
55
55
52
49
34
12
9
3
22
42
64
67
51
25
20
14
1
20
49
73
49

ISS Passover

Visibility (miles)

0
0
0
0
0
0
1
2
2
2
2
2
2
2
3
2
2
2
2
2
2
4
7
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 (%)

36
34
28
25
26
22
16
10
10
9
8
9
8
0
2
4
3
9
11
4
13
14
16
14

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
7
6
6
7
6
6
5
5
4
4
4
4
3
3
3
3
3
3
3
4
6
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-8
-8
-8
-7
-7
-9
-9
-8
-9
-9
-9
-12
-11
-10
-11
-11
-12
-12
-12
-13
-12
-12
-11

Dew Point (°C)

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

Relative Humidity (%)

92
94
94
96
94
94
94
94
96
94
94
94
92
90
92
92
92
90
92
92
90
87
82
80

Pressure (mb)

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

Ozone (du)

366
367
368
369
370
371
368
364
360
359
359
358
360
362
365
364
364
364
362
361
359
360
360
360

Wednesday 3

Waxing Gibbous 99%

15:12

07:33

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: 07:40, Set: 16:37, Transit: 12:08. Moon - Rise: 15:12, Set: 07:33. Civil Dark: 17:10 - 07:07. Nautical Dark: 17:47 - 06:30. Astro Dark: 18:22 - 05:54

Total Clouds (% Sky Obscured)

93
89
89
90
92
94
95
95
96
97
98
96
93
88
84
79
74

Low Clouds (% Sky Obscured)

85
79
80
83
85
86
88
90
90
91
91
92
91
88
83
73
61

Medium Clouds (% Sky Obscured)

42
43
42
41
37
33
23
18
35
51
70
75
77
65
62
61
55

High Clouds (% Sky Obscured)

24
0
0
0
0
2
7
10
40
70
98
96
93
88
84
79
74

ISS Passover

Visibility (miles)

6
3
0
2
3
4
3
2
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

Precipitation Type

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

Precipitation Probability (%)

15
17
17
26
30
31
33
43
53
58
68
67
61
59
57
58
59

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-2
-2
-2
-2
-3
-3
-3
-4
-4
-4
-3
-2
-2
-2
-2
-3
-3

Feels Like (°C)

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

Dew Point (°C)

-4
-4
-3
-3
-4
-4
-5
-5
-5
-4
-3
-3
-3
-3
-3
-3
-4

Relative Humidity (%)

83
87
92
92
91
91
91
92
94
94
96
96
94
96
96
96
96

Pressure (mb)

1013
1013
1013
1013
1013
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1014

Ozone (du)

359
358
356
356
356
355
355
355
355
357
358
360
363
366
368
369
369

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

Generated: 27/11/25 14:06:38. Forecast: 27/11/25 to 03/12/25. Timezone: UTC-5.00