Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 27

Waxing Crescent 47%

13:11

23:34

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
14 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
99
100
100
100
99
98
98
100
100
99
98
100
100
100
100
99
97
100
100
100
100
95

Low Clouds (% Sky Obscured)

100
100
99
100
100
73
67
67
67
68
71
74
74
80
77
75
74
72
81
72
70
71
67
67

Medium Clouds (% Sky Obscured)

100
100
99
100
100
98
95
94
94
98
100
96
92
100
100
100
93
95
85
100
100
100
100
68

High Clouds (% Sky Obscured)

65
55
55
65
55
3
3
2
0
0
3
17
4
85
94
100
90
96
95
100
100
100
100
91

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

51
46
2
63
58
51
40
39
42
36
44
47
52
53
52
47
46
47
47
47
48
42
34
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
83
89
92
92
91
89
86
87
86
87
86
87
89
89
87
85
87
86
86
86
84
81
79

Pressure (mb)

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

Ozone (du)

362
364
367
369
370
372
371
368
367
366
365
363
363
362
361
359
355
348
345
345
340
337
339
338

Friday 28

First Quarter 58%

13:29

00:46

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

99
88
92
91
90
68
60
38
42
25
8
5
5
6
20
26
24
35
70
93
70
100
100
100

Low Clouds (% Sky Obscured)

70
65
66
39
31
38
49
31
29
16
5
1
1
1
20
25
1
1
2
2
30
75
76
80

Medium Clouds (% Sky Obscured)

57
59
75
46
43
29
5
2
4
0
0
0
0
0
0
0
19
24
56
85
57
100
100
98

High Clouds (% Sky Obscured)

86
11
90
5
0
0
0
0
0
0
0
0
0
0
6
11
8
14
38
65
34
56
100
68

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 (%)

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

14
14
13
12
12
11
11
10
9
8
8
7
6
6
5
5
3
2
3
2
2
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
75
72
72
72
72
73
76
76
79
79
79
80
80
82
80
84
85
73
65
64
65
65
64

Pressure (mb)

1013
1014
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1027
1028
1029
1029
1030
1031
1031
1030
1030
1029

Ozone (du)

337
345
347
353
355
355
355
357
356
353
350
349
349
349
348
347
347
347
346
348
346
344
342
340

Saturday 29

Waxing Gibbous 69%

13:49

02:01

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
14 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)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
98
98

Low Clouds (% Sky Obscured)

80
65
76
78
77
90
91
94
98
98
97
99
99
98
95
96
99
99
98
100
100
96
96
97

Medium Clouds (% Sky Obscured)

96
98
100
98
100
100
100
100
100
100
100
100
100
100
98
100
100
100
100
97
100
95
96
96

High Clouds (% Sky Obscured)

100
78
80
71
83
100
100
100
100
100
100
100
100
100
20
1
0
0
0
0
0
0
1
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
0
0
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

1
3
9
13
17
19
42
68
87
95
95
95
95
95
95
95
95
95
95
95
95
95
71
70

Precipitation Amount (mm)

0
0
0
0
0
0
0.1
0.3
0.5
0.8
0.8
0.8
1
1.1
0.9
0.8
0.8
1
1.2
1.2
0.8
0.8
0.4
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
76
86
87
87
86
84
92
94
94
96
94
94
96
94
94
96
96
96
98
98
96
100
98

Pressure (mb)

1029
1029
1029
1029
1028
1028
1027
1026
1025
1024
1023
1021
1019
1017
1015
1013
1011
1010
1008
1007
1006
1004
1003
1003

Ozone (du)

338
338
341
341
343
344
343
343
344
347
348
351
353
360
365
368
372
378
381
384
383
382
384
391

Sunday 30

Waxing Gibbous 79%

14:11

03:18

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 OK
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 07:37, Set: 16:38, Transit: 12:07. Moon - Rise: 14:11, 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)

97
98
99
100
99
99
99
100
100
100
100
100
99
89
79
70
55
40
25
19
43
61
71
75

Low Clouds (% Sky Obscured)

97
97
96
96
97
98
98
97
95
92
80
67
49
48
52
56
38
24
15
17
40
49
54
62

Medium Clouds (% Sky Obscured)

95
96
97
98
86
73
17
29
42
60
65
64
64
46
28
10
6
3
0
0
0
0
2
2

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
2
9

ISS Passover

Visibility (miles)

0
2
0
0
0
0
1
3
9
5
6
6
1
2
4
4
4
0
0
6
6
7
8
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
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

77
83
94
85
84
70
54
47
48
47
57
56
49
55
46
25
24
34
24
8
6
6
8
12

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-5
-5
-4
-4
-5
-6
-8
-8
-8
-9
-9
-11
-12
-12
-12
-14
-14
-13
-13
-11
-12
-11
-11

Dew Point (°C)

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

Relative Humidity (%)

96
83
94
96
94
96
86
83
70
79
78
81
84
87
83
83
78
81
87
78
77
74
74
73

Pressure (mb)

1004
1004
1005
1006
1008
1009
1010
1012
1013
1014
1016
1017
1019
1020
1022
1023
1024
1025
1026
1027
1027
1027
1027
1027

Ozone (du)

401
408
412
412
409
407
405
409
410
411
405
397
397
400
400
398
397
395
395
395
394
393
394
392

Monday 1

Waxing Gibbous 88%

14:37

04:41

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
14 Bad

Sun - Rise: 07:38, Set: 16:37, Transit: 12:07. Moon - Rise: 14:37, 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)

77
84
88
92
94
97
100
100
100
100
89
79
69
72
86
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

66
57
61
53
64
67
59
37
23
20
30
35
33
35
35
40
53
67
81
83
85
87
90
90

Medium Clouds (% Sky Obscured)

2
12
45
53
71
86
100
100
100
100
80
63
45
45
50
50
53
56
59
52
48
47
51
55

High Clouds (% Sky Obscured)

10
23
10
5
33
67
100
100
100
100
82
68
49
70
80
100
97
93
92
97
96
95
95
95

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
0
0
0
0
0
1
1
1
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

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 (%)

4
11
11
5
13
15
11
14
14
3
4
4
2
9
20
24
27
26
22
22
22
20
21
24

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-10
-10
-12
-11
-12
-12
-12
-12
-12
-12
-12
-12
-12
-13
-13
-13
-13
-12
-12
-12
-12
-11
-7

Dew Point (°C)

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

Relative Humidity (%)

76
77
87
88
88
88
87
85
85
83
83
83
83
85
87
90
90
90
89
89
87
87
86
87

Pressure (mb)

1027
1028
1028
1028
1028
1028
1027
1027
1027
1026
1025
1025
1024
1023
1023
1022
1022
1021
1021
1020
1019
1018
1016
1016

Ozone (du)

391
389
386
384
382
383
382
382
382
381
379
378
379
378
377
378
381
381
380
380
379
378
376
370

Tuesday 2

Waxing Gibbous 95%

No Rise

06:07

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
14 Bad

Sun - Rise: 07:39, Set: 16:37, Transit: 12:08. Moon - Rise: No Rise, 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
99
98
97
95
93
92
92
94
95
91
86
83
88
94
100
96
91
87
83
81

Low Clouds (% Sky Obscured)

90
90
87
86
83
80
75
75
76
76
78
81
85
85
85
83
81
80
80
83
84
87
83
81

Medium Clouds (% Sky Obscured)

60
65
75
80
67
55
44
39
40
45
38
35
37
35
34
22
45
68
93
66
39
11
7
4

High Clouds (% Sky Obscured)

95
100
100
100
99
98
97
95
93
85
54
31
19
23
25
26
36
35
28
17
13
2
3
2

ISS Passover

Visibility (miles)

1
1
0
0
0
1
2
3
2
2
1
1
1
1
1
1
1
3
4
5
5
4
4
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
None
None
None
None

Precipitation Probability (%)

25
20
21
20
17
15
12
10
12
9
20
21
19
19
15
13
14
11
4
11
15
20
25
29

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
5
5
5
5
5
5
5
5
5
5
5
6
6
6
7
7
7

Chance of Frost

Temperature (°C)

-3
-3
-4
-4
-4
-5
-5
-6
-7
-7
-8
-8
-8
-7
-7
-7
-7
-7
-6
-5
-4
-3
-2
-3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
92
96
96
96
96
96
94
94
94
94
94
96
94
96
94
94
92
87
84
85
84
84
87

Pressure (mb)

1015
1014
1014
1014
1014
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1014
1014
1014
1014
1014
1014

Ozone (du)

363
356
356
355
354
356
357
358
358
359
359
358
356
354
356
357
358
358
357
357
355
353
352
351

Wednesday 3

Waxing Gibbous 99%

15:12

07:33

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

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)

79
91
96
100
100
100
100
100
100
100
100
99
99
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

79
88
93
100
100
100
100
96
93
91
88
85
83
83
82
82
81
83
83
85
88
90

Medium Clouds (% Sky Obscured)

0
25
46
65
70
76
85
89
93
99
96
93
90
93
97
100
100
100
100
96
92
89

High Clouds (% Sky Obscured)

1
11
19
31
55
80
96
95
92
83
73
58
50
57
73
100
98
96
92
97
96
90

ISS Passover

Visibility (miles)

1
0
0
0
0
1
2
2
2
1
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

Precipitation Type

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

Precipitation Probability (%)

31
31
37
48
49
50
55
55
57
66
72
72
70
72
74
76
75
75
77
73
68
63

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-4
-3
-4
-4
-4
-4
-5
-5
-5
-4
-4
-4
-3
-3
-2
-2
-2
-2
-1
-1
-2
-2

Relative Humidity (%)

92
94
94
94
94
94
92
91
92
94
94
96
96
96
98
98
96
98
98
98
98
98

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1012
1011
1011
1010
1009
1009
1008
1007
1006
1006
1005

Ozone (du)

351
350
351
352
352
352
352
351
353
355
356
359
362
365
365
365
366
367
369
370
371
372

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

Generated: 27/11/25 15:19:19. Forecast: 27/11/25 to 03/12/25. Timezone: UTC-5.00