Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 7

Waning Gibbous 84%

19:32

11:21

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

Sun - Rise: 07:44, Set: 16:36, Transit: 12:10. Moon - Rise: 19:32, Set: 11:21. Civil Dark: 17:10 - 07:10. Nautical Dark: 17:47 - 06:33. Astro Dark: 18:22 - 05:58

Total Clouds (% Sky Obscured)

78
80
69
18
1
1
1
1
1
2
8
8
9
2
3
14
47
30
30
63
82
81
97
95

Low Clouds (% Sky Obscured)

29
38
61
18
0
0
0
0
0
0
0
0
0
0
0
14
47
30
30
39
65
61
61
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
33
25
85
84

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
7
6
22
62
7
5
21

ISS Passover

Visibility (miles)

3
6
9
9
9
9
9
9
9
9
8
7
7
9
9
9
9
9
9
9
9
9
9
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 (%)

11
2
5
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
1
2
2
3
6

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
7
10
11
10
9
7
4
4
4
4
3
3
3
2
1
1
1
2
2
3
2
3
3

Chance of Frost

Temperature (°C)

-9
-11
-11
-11
-12
-13
-15
-17
-18
-19
-19
-20
-21
-20
-20
-17
-15
-13
-11
-9
-9
-8
-9
-9

Feels Like (°C)

-14
-16
-16
-15
-16
-17
-18
-19
-20
-21
-21
-22
-23
-23
-22
-18
-16
-14
-13
-11
-12
-12
-12
-13

Dew Point (°C)

-11
-13
-14
-14
-15
-16
-17
-20
-21
-21
-22
-23
-23
-23
-23
-20
-18
-15
-13
-12
-12
-11
-10
-11

Relative Humidity (%)

88
83
76
75
75
78
79
80
79
79
78
78
75
77
78
76
77
81
80
80
78
80
90
90

Pressure (mb)

1019
1021
1022
1023
1025
1026
1027
1028
1029
1029
1030
1030
1031
1031
1032
1031
1031
1031
1029
1029
1028
1028
1028
1028

Ozone (du)

384
379
379
385
389
385
382
391
394
390
383
388
395
391
385
383
382
381
385
395
405
413
416
414

Monday 8

Waning Gibbous 75%

20:52

11:48

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
17 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)

100
100
100
98
100
94
94
89
79
98
100
99
100
100
100
95
100
100
100
100
100
100
98
100

Low Clouds (% Sky Obscured)

70
72
65
68
76
32
66
13
4
3
9
5
5
6
8
17
92
100
97
94
94
94
94
99

Medium Clouds (% Sky Obscured)

97
100
100
95
98
90
84
85
79
98
100
96
88
73
100
88
100
100
100
100
100
100
85
43

High Clouds (% Sky Obscured)

14
96
86
18
0
4
11
78
79
80
100
39
96
100
100
79
99
100
95
99
65
70
39
0

ISS Passover

Visibility (miles)

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

Fog (%)

1
2
2
2
2
1
1
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

8
11
20
8
7
5
5
1
0
0
0
0
0
0
0
11
68
95
95
91
82
88
82
70

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
1.4
1.6
0.6
0.5
0.4
0.4
0.3

Wind Speed/Direction (mph)

4
5
6
6
6
6
6
6
6
6
6
6
7
8
9
10
11
12
13
13
13
11
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
90
87
83
81
83
85
85
80
81
85
85
83
82
80
80
92
94
94
92
94
94
96

Pressure (mb)

1027
1027
1026
1025
1025
1024
1023
1023
1022
1021
1020
1018
1017
1016
1014
1012
1011
1009
1006
1004
1002
1001
1000
1000

Ozone (du)

407
402
400
400
404
412
417
413
411
413
415
414
415
416
417
421
425
424
418
416
413
411
407
401

Tuesday 9

Waning Gibbous 65%

22:08

12:09

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
17 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)

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

Low Clouds (% Sky Obscured)

100
100
100
96
96
100
96
98
82
71
97
95
100
97
95
94
93
94
93
90
89
86
90
91

Medium Clouds (% Sky Obscured)

45
41
4
0
6
21
43
43
86
100
100
100
100
100
100
100
100
100
100
100
100
100
95
89

High Clouds (% Sky Obscured)

2
0
0
0
23
30
46
84
100
100
100
100
100
100
100
100
72
100
100
81
63
58
53
38

ISS Passover

Visibility (miles)

0
0
0
0
9
7
0
0
0
0
0
4
7
2
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

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

Precipitation Probability (%)

93
73
62
56
44
40
34
31
38
40
51
68
86
92
95
95
95
95
95
95
78
62
49
37

Precipitation Amount (mm)

0.9
0.5
0.4
0.3
0.1
0.2
0.2
0.2
0.2
0.1
0.2
0.3
0.4
0.5
0.8
0.7
0.7
0.9
1.1
0.7
0.4
0.3
0.1
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
94
91
98
78
81
92
96
94
96
96
96
96
94
96
96
96
96
96
96
96
98
96
94

Pressure (mb)

999
999
1000
1000
1000
1000
1000
1000
1000
999
998
997
997
996
995
994
994
993
992
991
992
992
993
994

Ozone (du)

381
361
352
348
345
341
339
340
343
346
344
345
343
347
350
349
352
352
354
351
350
348
348
347

Wednesday 10

Waning Gibbous 54%

23:19

12:27

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
17 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)

96
97
90
72
98
98
95
96
100
100
99
98
97
98
99
100
100
100
99
98
100
100
75
100

Low Clouds (% Sky Obscured)

94
81
78
52
86
85
80
76
74
82
74
61
54
56
57
68
74
76
84
84
87
88
75
90

Medium Clouds (% Sky Obscured)

84
70
51
57
55
55
61
67
100
100
97
95
92
95
98
100
100
100
67
67
70
70
70
70

High Clouds (% Sky Obscured)

27
41
37
53
55
54
53
39
27
20
20
25
30
1
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

28
21
18
12
12
8
6
5
5
4
6
9
5
9
9
3
3
5
4
25
26
34
35
41

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
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
92
89
89
90
90
88
90
88
88
88
88
86
86
86
86
85
86
85
87
88
88
94
94

Pressure (mb)

996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1007
1008
1008
1008
1009
1009
1009
1008
1008
1008
1008
1009

Ozone (du)

350
355
357
360
360
361
358
353
356
358
358
358
359
360
362
364
368
369
368
367
363
356
353
354

Thursday 11

Third Quarter 44%

00:27

12:44

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
17 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)

97
100
100
100
100
100
100
100
100
100
94
89
83
88
91
94
93
91
89
86
83
79
76
76

Low Clouds (% Sky Obscured)

87
87
89
86
80
78
76
75
75
73
75
76
78
82
86
90
91
91
89
86
83
79
76
72

Medium Clouds (% Sky Obscured)

72
100
100
100
100
100
100
100
100
100
87
76
64
68
71
75
72
59
55
46
38
31
26
20

High Clouds (% Sky Obscured)

0
0
0
5
5
5
0
5
15
20
1
1
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

38
39
40
38
36
37
37
35
38
37
39
49
56
62
69
75
70
64
59
48
35
20
19
17

Precipitation Amount (mm)

0.1
0
0.1
0
0
0
0.1
0.1
0.1
0.1
0.1
0.3
0.3
0.4
0.5
0.7
0.5
0.4
0.3
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-13
-14
-14
-13
-14
-14
-14
-15
-14
-16
-15
-16
-17
-17
-17
-18
-18
-16
-14
-13
-12
-12
-10
-9

Dew Point (°C)

-10
-11
-11
-11
-11
-11
-11
-11
-12
-12
-13
-13
-13
-13
-14
-14
-14
-13
-12
-11
-10
-10
-9
-9

Relative Humidity (%)

94
92
92
94
92
94
94
94
94
94
94
94
96
96
94
94
94
92
90
87
87
87
87
87

Pressure (mb)

1010
1010
1010
1010
1010
1010
1010
1009
1010
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010
1011
1012
1013

Ozone (du)

351
346
343
342
339
338
336
336
339
341
343
349
352
359
364
370
375
376
378
379
382
384
387
386

Friday 12

Waning Crescent 34%

01:32

13:00

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
17 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)

75
64
52
41
57
72
86
90
95
99
99
100
100
99
97
96
98
99
100
100
100
100
79
59

Low Clouds (% Sky Obscured)

65
55
45
36
46
57
67
74
82
88
86
83
79
75
71
67
72
79
84
88
94
98
79
59

Medium Clouds (% Sky Obscured)

19
15
11
7
22
35
48
58
66
77
85
94
100
96
93
90
92
95
96
96
96
95
64
31

High Clouds (% Sky Obscured)

0
0
0
0
4
8
11
16
19
22
14
7
1
1
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

10
16
19
15
22
24
12
17
20
20
31
35
34
33
33
32
40
45
50
58
61
62
57
47

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-8
-8
-9
-10
-11
-12
-12
-13
-14
-14
-15
-14
-13
-12
-12
-11
-10
-9
-8
-7
-7
-7
-6
-8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
85
85
85
83
83
81
81
81
81
81
83
84
83
81
81
83
85
87
85
85
85
83

Pressure (mb)

1013
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1014
1013
1012
1011
1011
1012
1012
1013

Ozone (du)

386
386
384
381
379
382
386
390
392
395
397
399
400
401
401
402
402
400
398
396
395
393
392
387

Saturday 13

Waning Crescent 25%

02:37

13:18

18 Bad
19 Bad
20 OK
21 OK
22 OK
23 OK
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: 07:49, Set: 16:37, Transit: 12:13. Moon - Rise: 02:37, Set: 13:18. Civil Dark: 17:10 - 07:15. Nautical Dark: 17:48 - 06:38. Astro Dark: 18:23 - 06:02

Total Clouds (% Sky Obscured)

37
28
28
27
35
33
35
35
40
47
62
79
97
97
98
96
91
88
85

Low Clouds (% Sky Obscured)

37
28
28
27
35
33
35
35
40
47
52
57
61
56
50
42
35
28
21

Medium Clouds (% Sky Obscured)

0
4
8
11
15
17
21
19
17
15
30
45
61
72
79
80
75
70
65

High Clouds (% Sky Obscured)

0
0
0
0
0
1
1
7
11
16
19
15
19
19
20
25
5
5
10

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
8
8
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

Precipitation Type

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

Precipitation Probability (%)

26
24
20
8
13
14
5
10
10
5
11
12
3
6
11
3
6
7
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-9
-10
-11
-12
-13
-15
-16
-17
-18
-19
-20
-20
-20
-20
-18
-16
-15
-13
-12

Feels Like (°C)

-12
-12
-13
-14
-15
-15
-15
-14
-20
-20
-20
-21
-22
-22
-23
-24
-24
-23
-22

Dew Point (°C)

-11
-12
-13
-15
-16
-17
-18
-19
-20
-21
-23
-22
-22
-22
-20
-18
-17
-16
-15

Relative Humidity (%)

82
80
81
81
83
82
81
81
81
81
79
81
81
81
82
83
84
83
81

Pressure (mb)

1014
1016
1016
1017
1018
1018
1019
1020
1020
1021
1022
1022
1023
1023
1024
1024
1024
1024
1024

Ozone (du)

382
377
375
372
370
367
364
360
359
357
356
357
358
359
360
360
361
362
364

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

Generated: 07/12/25 17:56:12. Forecast: 07/12/25 to 13/12/25. Timezone: UTC-5.00