Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 8

Waning Gibbous 75%

20:52

11:48

17 OK
18 OK
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: 07:45, Set: 16:36, Transit: 12:10. Moon - Rise: 20:52, Set: 11:48. Civil Dark: 17:10 - 07:11. Nautical Dark: 17:47 - 06:34. Astro Dark: 18:22 - 05:59

Total Clouds (% Sky Obscured)

12
28
35
34
100
99
94
94
80
99
100
100
95
100
100
100
100
95
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

12
28
28
34
66
74
71
65
23
0
0
0
0
0
0
0
0
0
0
99
100
94
85
85

Medium Clouds (% Sky Obscured)

12
28
35
34
99
95
87
88
80
94
100
100
95
100
100
100
100
94
87
100
83
97
100
95

High Clouds (% Sky Obscured)

12
28
35
34
3
0
1
3
5
18
100
94
90
95
98
100
100
95
100
100
100
99
85
90

ISS Passover

Visibility (miles)

4
4
2
1
2
1
0
0
0
4
4
8
8
9
9
9
9
9
9
9
3
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
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
6
16
19
22
21
18
4
2
1
0
0
0
0
0
0
2
21
91
95
82
74

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.8
1
0.5
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-12
-13
-14
-14
-11
-11
-10
-10
-10
-10
-11
-11
-11
-11
-10
-10
-9
-7
-6
-5
-5
-5
-5
-5

Feels Like (°C)

-15
-16
-17
-18
-14
-15
-14
-14
-14
-14
-15
-15
-15
-15
-15
-14
-14
-12
-11
-11
-10
-11
-10
-10

Dew Point (°C)

-13
-15
-15
-16
-12
-12
-11
-11
-11
-11
-12
-12
-12
-13
-13
-12
-11
-10
-9
-8
-7
-6
-6
-6

Relative Humidity (%)

90
88
88
88
90
92
92
92
90
90
90
90
88
85
80
83
83
79
77
77
82
92
94
92

Pressure (mb)

1028
1027
1028
1027
1027
1026
1025
1024
1023
1023
1022
1021
1020
1019
1018
1017
1016
1015
1013
1011
1009
1007
1005
1004

Ozone (du)

423
417
416
416
413
410
413
417
413
416
425
429
428
426
425
425
426
428
425
419
419
412
407
402

Tuesday 9

Waning Gibbous 65%

22:08

12:09

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: 07:46, Set: 16:36, Transit: 12:11. Moon - Rise: 22:08, Set: 12:09. Civil Dark: 17:10 - 07:12. Nautical Dark: 17:47 - 06:35. Astro Dark: 18:22 - 05:59

Total Clouds (% Sky Obscured)

97
94
95
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
99

Low Clouds (% Sky Obscured)

87
84
85
82
91
97
100
100
96
80
75
91
90
100
100
99
95
91
90
87
85
85
87
96

Medium Clouds (% Sky Obscured)

89
79
84
74
35
40
53
75
100
100
100
100
100
100
100
100
100
100
98
100
100
96
79
80

High Clouds (% Sky Obscured)

0
0
38
86
25
29
100
90
100
100
100
100
100
100
100
98
100
77
77
100
100
100
70
70

ISS Passover

Visibility (miles)

0
1
1
0
0
0
0
0
0
0
0
0
3
3
0
0
0
0
0
0
0
0
1
0

Fog (%)

0
0
0
0
0
0
0
0
0
13
6
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

70
54
51
56
72
78
64
62
51
45
38
36
49
77
95
95
94
82
74
64
58
44
38
45

Precipitation Amount (mm)

0.3
0
0.1
0.2
0.4
0.7
0.4
0.5
0.3
0.2
0.2
0
0.2
0.3
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

1003
1003
1002
1002
1001
1000
1000
1000
999
999
999
997
996
996
995
995
994
994
993
992
991
991
992
993

Ozone (du)

398
387
380
371
356
346
340
339
340
344
346
347
348
354
355
352
350
350
350
355
356
353
350
343

Wednesday 10

Waning Gibbous 54%

23:19

12:27

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

Sun - Rise: 07:46, Set: 16:36, Transit: 12:11. Moon - Rise: 23:19, Set: 12:27. Civil Dark: 17:10 - 07:13. Nautical Dark: 17:47 - 06:36. Astro Dark: 18:22 - 06:00

Total Clouds (% Sky Obscured)

98
97
97
80
87
52
30
33
42
58
96
91
50
54
55
77
57
14
31
53
69
81
87
72

Low Clouds (% Sky Obscured)

91
94
91
80
87
52
30
33
42
58
86
83
50
54
55
65
52
12
15
52
69
81
82
68

Medium Clouds (% Sky Obscured)

74
47
6
14
9
0
0
8
24
35
35
33
31
33
26
24
12
0
15
8
12
20
31
26

High Clouds (% Sky Obscured)

70
24
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
2
9
9
8
9
9
9
8
8
4
4
4
5
4
4
4
7
8
8
9
9
9
7

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
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 (%)

43
26
16
10
9
6
11
11
16
15
28
29
22
10
5
6
4
5
3
7
11
10
7
13

Precipitation Amount (mm)

0.1
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)

11
12
12
11
11
10
10
9
7
7
8
8
8
8
8
8
9
9
9
9
9
10
9
9

Chance of Frost

Temperature (°C)

-3
-5
-6
-7
-9
-10
-11
-12
-12
-13
-14
-14
-14
-14
-14
-15
-14
-14
-13
-12
-11
-11
-11
-10

Feels Like (°C)

-9
-10
-11
-13
-13
-14
-15
-15
-15
-16
-17
-18
-19
-18
-18
-19
-19
-19
-17
-16
-16
-16
-16
-15

Dew Point (°C)

-4
-6
-8
-9
-10
-12
-13
-14
-15
-15
-16
-16
-16
-16
-16
-17
-17
-17
-16
-15
-14
-14
-13
-13

Relative Humidity (%)

94
89
87
87
87
85
85
83
83
83
83
83
84
84
84
82
82
82
79
79
78
80
81
83

Pressure (mb)

994
996
997
999
1000
1001
1002
1002
1003
1003
1004
1004
1004
1005
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007

Ozone (du)

343
347
351
353
356
357
357
358
362
360
366
366
361
363
366
369
370
369
368
367
367
367
367
368

Thursday 11

Third Quarter 44%

00:27

12:44

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

Sun - Rise: 07:47, Set: 16:36, Transit: 12:12. Moon - Rise: 00:27, Set: 12:44. Civil Dark: 17:10 - 07:14. Nautical Dark: 17:47 - 06:37. Astro Dark: 18:23 - 06:01

Total Clouds (% Sky Obscured)

58
36
35
12
5
22
40
59
58
62
61
60
57
55
50
27
7
15
33
64
80
90
98
72

Low Clouds (% Sky Obscured)

57
35
15
9
5
18
32
49
57
61
61
60
57
55
44
23
4
14
32
52
60
70
78
61

Medium Clouds (% Sky Obscured)

14
2
26
2
1
4
8
13
23
32
41
29
16
3
2
1
0
0
0
0
22
48
73
72

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
23
51
75
72

ISS Passover

Visibility (miles)

4
4
5
8
9
9
9
9
9
9
9
9
9
9
8
7
6
6
6
5
4
8
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 (%)

18
21
15
23
5
12
12
6
14
16
17
16
14
10
7
8
1
3
4
3
5
14
4
10

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-15
-15
-15
-15
-14
-15
-15
-15
-15
-14
-14
-12
-12
-11
-10
-11
-10
-9
-8
-8
-8
-8
-8
-7

Dew Point (°C)

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

Relative Humidity (%)

86
86
83
81
83
83
83
83
81
81
81
81
81
81
82
83
85
89
89
87
84
81
81
87

Pressure (mb)

1008
1009
1010
1010
1011
1011
1011
1011
1011
1012
1012
1012
1013
1013
1014
1014
1014
1015
1014
1013
1013
1012
1012
1012

Ozone (du)

368
369
372
370
372
372
371
373
372
371
363
365
364
362
357
355
356
350
348
349
343
345
348
349

Friday 12

Waning Crescent 34%

01:32

13:00

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: 07:48, Set: 16:37, Transit: 12:12. Moon - Rise: 01:32, Set: 13:00. Civil Dark: 17:10 - 07:14. Nautical Dark: 17:47 - 06:37. Astro Dark: 18:23 - 06:02

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
96
95
94
92
92
90
85
84

Low Clouds (% Sky Obscured)

75
79
83
90
98
95
93
91
90
91
91
90
90
91
74
56
43
50
56
61
74
82
85
84

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
55
50
50
45
40
35
35
45
45
52
55
53
51

High Clouds (% Sky Obscured)

100
100
83
65
50
35
16
0
0
0
0
11
22
32
20
10
0
0
0
0
2
3
5
0

ISS Passover

Visibility (miles)

4
0
0
2
6
0
0
0
0
0
0
0
0
0
2
4
7
9
9
9
9
7
4
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
Snow
Snow
None
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

30
39
35
30
29
41
39
39
45
58
57
52
70
55
56
47
35
30
24
17
17
17
12
25

Precipitation Amount (mm)

0
0.2
0.1
0
0
0.1
0.1
0.1
0.1
0.3
0.3
0.2
0.6
0.3
0.3
0.2
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

1
3
3
5
6
6
7
6
7
7
7
7
7
8
8
9
9
10
9
9
8
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
94
96
91
87
92
94
94
92
92
94
92
90
92
87
84
79
74
74
74
76
77
82
85

Pressure (mb)

1012
1012
1011
1011
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1010
1011
1012
1013
1013
1013
1014
1014
1014
1015

Ozone (du)

352
356
356
354
360
364
366
368
369
372
377
377
376
376
371
367
362
358
356
354
351
350
348
346

Saturday 13

Waning Crescent 25%

02:37

13:18

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: 07:49, Set: 16:37, Transit: 12:13. Moon - Rise: 02:37, Set: 13:18. Civil Dark: 17:10 - 07:15. Nautical Dark: 17:47 - 06:38. Astro Dark: 18:23 - 06:02

Total Clouds (% Sky Obscured)

85
86
87
87
89
91
92
92
81
67
44
57
68
83
84
86
88
90
93
95
94
92
91
86

Low Clouds (% Sky Obscured)

85
86
87
87
89
91
92
92
81
67
44
57
68
83
84
86
88
90
88
87
88
89
90
82

Medium Clouds (% Sky Obscured)

44
38
54
69
82
87
89
89
74
59
39
30
21
21
35
51
66
68
74
76
75
70
69
65

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

1
1
0
1
1
2
1
1
0
1
1
1
1
1
0
1
2
2
1
1
0
3
5
7

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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

33
37
44
45
46
46
43
39
38
33
24
25
24
22
33
38
39
38
35
29
30
28
22
21

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-7
-7
-8
-9
-10
-11
-11
-11
-12
-12
-13
-13
-14
-15
-15
-14
-13
-13
-12
-12
-11
-12
-12
-12

Feels Like (°C)

-9
-9
-9
-13
-14
-15
-15
-15
-15
-16
-16
-16
-16
-16
-16
-19
-19
-19
-18
-17
-16
-17
-17
-17

Dew Point (°C)

-8
-8
-9
-10
-11
-12
-12
-13
-13
-13
-14
-15
-15
-16
-17
-16
-15
-15
-14
-14
-14
-14
-15
-15

Relative Humidity (%)

89
90
90
90
90
90
90
90
90
92
90
90
90
88
86
86
84
84
83
83
81
81
78
76

Pressure (mb)

1015
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1019
1019
1020
1020
1021
1022
1023

Ozone (du)

346
346
346
348
350
352
355
358
361
363
364
365
374
383
391
392
393
394
393
392
391
387
383
379

Sunday 14

Waning Crescent 17%

03:42

13:38

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

Sun - Rise: 07:49, Set: 16:37, Transit: 12:13. Moon - Rise: 03:42, Set: 13:38. Civil Dark: 17:10 - 07:16. Nautical Dark: 17:48 - 06:39. Astro Dark: 18:23 - 06:03

Total Clouds (% Sky Obscured)

77
66
47
30
14
21
23
28
26
27
26
22
17
17
15
13
11
15
20
25

Low Clouds (% Sky Obscured)

76
66
47
30
14
14
8
3
3
3
3
3
3
2
3
3
4
7
9
12

Medium Clouds (% Sky Obscured)

58
51
32
15
0
12
19
28
26
27
26
22
17
17
10
5
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
2
15
27
26
22
17
17
15
13
0
0
0
0

ISS Passover

Visibility (miles)

8
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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

19
15
14
12
4
5
7
2
3
5
1
3
5
3
6
8
2
4
6
2

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)

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

Chance of Frost

Temperature (°C)

-13
-14
-15
-16
-17
-19
-20
-21
-22
-23
-24
-25
-25
-25
-24
-22
-20
-17
-15
-14

Feels Like (°C)

-17
-17
-17
-21
-21
-21
-21
-21
-22
-26
-25
-25
-26
-27
-27
-26
-26
-26
-25
-24

Dew Point (°C)

-16
-17
-18
-20
-21
-22
-23
-24
-25
-26
-27
-28
-27
-27
-27
-25
-22
-20
-18
-16

Relative Humidity (%)

76
75
75
75
74
74
76
73
74
74
75
74
74
75
75
76
78
79
80
79

Pressure (mb)

1024
1025
1026
1027
1027
1028
1028
1029
1029
1030
1030
1031
1031
1032
1032
1032
1032
1032
1032
1031

Ozone (du)

371
363
355
349
343
337
341
344
347
348
349
349
346
343
340
326
313
300
296
293

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

Generated: 08/12/25 17:54:38. Forecast: 08/12/25 to 14/12/25. Timezone: UTC-5.00