Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 2%

06:58

15:08

16 Bad
17 Bad
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

Sun - Rise: 07:51, Set: 16:38, Transit: 12:15. Moon - Rise: 06:58, Set: 15:08. Civil Dark: 17:11 - 07:18. Nautical Dark: 17:49 - 06:40. Astro Dark: 18:24 - 06:05

Total Clouds (% Sky Obscured)

87
74
37
52
65
69
79
90
34
73
98
100
98
91
89
98
93
75
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

35
28
37
52
57
64
73
60
26
22
22
48
45
54
63
72
62
44
74
53
73
26
23
10

Medium Clouds (% Sky Obscured)

0
0
2
0
33
20
8
80
1
2
38
3
26
55
42
43
49
29
56
58
31
44
78
62

High Clouds (% Sky Obscured)

0
0
2
0
3
3
10
76
34
53
98
100
82
91
89
98
93
75
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
7
3
3
3
3
3
6
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
Very Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
53
11
9
14
32

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
89
90
90
88
88
90
92
92
92
92
92
91
94
92
89
89
91
91
93
93
91
89
86

Pressure (mb)

1014
1015
1017
1018
1019
1019
1020
1020
1019
1018
1018
1017
1016
1015
1015
1014
1013
1012
1011
1010
1008
1007
1006
1005

Ozone (du)

331
324
321
323
323
322
321
320
321
321
325
327
321
321
320
318
314
312
310
310
310
309
306
309

Thursday 18

Waning Crescent 0%

07:58

15:54

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
15 Bad

Sun - Rise: 07:52, Set: 16:38, Transit: 12:15. Moon - Rise: 07:58, Set: 15:54. Civil Dark: 17:12 - 07:18. Nautical Dark: 17:49 - 06:41. Astro Dark: 18:25 - 06:05

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

44
75
98
39
96
73
98
95
98
100
100
94
88
100
100
83
100
93
91
100
89
89
92
89

Medium Clouds (% Sky Obscured)

73
85
89
97
100
100
100
100
97
100
100
100
100
100
88
64
0
56
83
87
88
72
77
40

High Clouds (% Sky Obscured)

95
87
32
100
100
100
100
100
100
100
100
100
100
100
0
54
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
6
9
9
5
4
0
0
0
0
4
6
9
0
0
0
0
0
0
0
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
Light Rain
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
Snow
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

25
40
95
66
69
95
95
95
95
95
95
95
81
31
38
41
71
61
60
68
78
86
61
46

Precipitation Amount (mm)

0
0
1.1
0
0
0.7
1.6
1.4
0.9
0.9
1
0.7
0.5
0
0.1
0
0.4
0.2
0.3
0.4
0.5
0.6
0.3
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
86
88
94
91
89
96
98
100
100
100
100
100
98
96
98
98
98
91
94
89
94
89
86

Pressure (mb)

1004
1003
1002
1001
999
998
996
995
993
992
991
991
991
991
991
992
992
993
994
994
994
994
995
997

Ozone (du)

309
313
314
317
318
321
323
327
329
332
332
336
343
345
355
357
367
369
369
370
373
377
385
401

Friday 19

New Moon 1%

08:49

15:54

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

Sun - Rise: 07:52, Set: 16:39, Transit: 12:16. Moon - Rise: 08:49, Set: 15:54. Civil Dark: 17:12 - 07:19. Nautical Dark: 17:49 - 06:42. Astro Dark: 18:25 - 06:06

Total Clouds (% Sky Obscured)

98
96
89
90
89
85
71
34
26
32
39
43
74
73
73
97
100
99
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

85
87
77
74
75
64
41
11
2
2
2
2
2
7
6
49
28
15
61
80
81
68
57
40

Medium Clouds (% Sky Obscured)

38
38
33
5
0
0
0
15
26
30
30
32
74
68
67
55
98
89
86
100
100
90
100
100

High Clouds (% Sky Obscured)

0
4
4
0
0
0
0
0
0
2
4
0
13
3
10
81
100
86
44
100
80
88
94
100

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

57
48
35
25
7
3
1
1
1
1
0
0
0
0
0
0
0
0
0
1
24
19
59
57

Precipitation Amount (mm)

0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-9
-11
-12
-13
-14
-14
-15
-15
-15
-15
-15
-15
-15
-15
-15
-14
-13
-11
-9
-7
-6
-5
-4

Relative Humidity (%)

92
92
88
87
81
80
76
76
78
79
79
84
84
86
84
84
83
83
83
87
85
85
89
89

Pressure (mb)

1000
1003
1005
1008
1010
1012
1014
1016
1017
1018
1020
1021
1020
1020
1020
1020
1019
1018
1017
1016
1013
1011
1009
1007

Ozone (du)

404
410
413
408
407
406
384
375
371
369
368
372
372
365
356
350
347
340
336
335
338
339
335
340

Saturday 20

Waxing Crescent 3%

09:32

16:51

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
15 Bad

Sun - Rise: 07:53, Set: 16:39, Transit: 12:16. Moon - Rise: 09:32, Set: 16:51. Civil Dark: 17:13 - 07:19. Nautical Dark: 17:50 - 06:42. Astro Dark: 18:26 - 06:06

Total Clouds (% Sky Obscured)

100
100
100
98
96
94
88
83
78
84
91
98
74
49
25
45
64
83
89
92
96
82
66
56

Low Clouds (% Sky Obscured)

63
82
100
97
95
92
88
83
78
83
89
95
67
42
15
34
58
82
88
92
95
72
50
33

Medium Clouds (% Sky Obscured)

100
100
100
85
67
50
3
2
0
9
17
26
17
9
0
0
2
1
3
1
2
0
0
0

High Clouds (% Sky Obscured)

100
100
100
50
30
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

95
95
95
95
87
77
61
44
26
30
59
64
63
59
59
53
47
54
63
64
63
48
31
19

Precipitation Amount (mm)

1.4
0.9
1.4
0.7
0.6
0.6
0.3
0.1
0
0
0.3
0.5
0.4
0.2
0.2
0.1
0.1
0.3
0.5
0.5
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
92
92
94
96
96
94
98
83
71
75
91
90
87
76
70
67
76
85
87
85
85
79
82

Pressure (mb)

1005
1005
1004
1004
1003
1002
1002
1002
1002
1002
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1017
1019

Ozone (du)

340
342
343
347
353
361
364
364
366
369
367
368
373
382
385
397
397
396
385
381
375
369
366
362

Sunday 21

Waxing Crescent 7%

10:06

17:54

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

Sun - Rise: 07:53, Set: 16:39, Transit: 12:17. Moon - Rise: 10:06, Set: 17:54. Civil Dark: 17:13 - 07:20. Nautical Dark: 17:50 - 06:42. Astro Dark: 18:26 - 06:07

Total Clouds (% Sky Obscured)

55
41
34
32
40
47
45
44
44
46
42
40
62
70
85
85
88
88
91
95
99
97
96
96

Low Clouds (% Sky Obscured)

25
17
10
19
36
47
45
44
44
46
42
40
53
60
61
56
50
41
42
41
39
33
36
39

Medium Clouds (% Sky Obscured)

7
15
22
21
19
17
11
6
0
0
0
0
1
2
3
17
29
37
51
71
83
86
88
90

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
28
54
85
85
85
88
91
95
99
67
35
2

ISS Passover

Visibility (miles)

4
4
4
6
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

17
16
13
8
9
2
5
8
8
16
16
9
13
14
10
16
13
6
16
23
29
40
49
57

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-15
-15
-15
-15
-15
-15
-15
-15
-15
-14
-14
-14
-14
-14
-15
-15
-15
-15
-14
-14
-14
-8
-7

Dew Point (°C)

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

Relative Humidity (%)

81
81
81
81
80
78
81
80
81
83
81
81
83
81
83
83
83
83
82
82
79
77
81
84

Pressure (mb)

1021
1022
1024
1025
1026
1027
1028
1029
1030
1030
1031
1032
1032
1032
1033
1034
1033
1033
1033
1033
1032
1031
1031
1031

Ozone (du)

360
364
370
377
382
378
370
357
359
361
358
356
357
355
351
349
350
350
350
349
347
346
342
338

Monday 22

Waxing Crescent 13%

10:33

19:03

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
15 Bad

Sun - Rise: 07:54, Set: 16:40, Transit: 12:17. Moon - Rise: 10:33, Set: 19:03. Civil Dark: 17:14 - 07:20. Nautical Dark: 17:51 - 06:43. Astro Dark: 18:27 - 06:07

Total Clouds (% Sky Obscured)

97
97
98
95
91
86
81
77
72
79
85
95
96
98
98
99
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

35
35
31
31
28
32
29
26
23
28
33
34
41
51
57
62
67
71
78
82
89
92
95
98

Medium Clouds (% Sky Obscured)

92
92
91
83
76
67
58
52
45
60
72
85
87
91
96
97
97
96
97
99
100
99
99
98

High Clouds (% Sky Obscured)

0
0
0
0
0
0
11
22
31
27
26
26
45
63
80
85
86
91
78
70
84
55
54
45

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
6
4

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

54
50
42
34
25
10
11
10
6
5
4
0
0
0
0
0
0
0
5
7
6
47
65
80

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-5
-3
-1
-7
-7
-7
-9
-10
-12
-11
-12
-12
-12
-13
-14
-12
-12
-13
-13
-13
-13
-7
-8

Dew Point (°C)

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

Relative Humidity (%)

87
87
87
87
85
85
84
84
84
83
83
83
83
83
83
83
84
85
87
87
89
89
89
87

Pressure (mb)

1031
1031
1031
1031
1031
1030
1030
1030
1030
1029
1029
1029
1029
1029
1028
1028
1027
1027
1026
1025
1024
1022
1021
1021

Ozone (du)

334
332
329
327
326
325
324
321
317
314
315
315
316
318
320
322
325
327
330
330
330
330
329
328

Tuesday 23

Waxing Crescent 21%

10:56

20:14

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: 07:54, Set: 16:41, Transit: 12:18. Moon - Rise: 10:56, Set: 20:14. Civil Dark: 17:14 - 07:20. Nautical Dark: 17:51 - 06:43. Astro Dark: 18:27 - 06:08

Total Clouds (% Sky Obscured)

100
100
100
99
99
98
98
98
98
95
90
85
89
93
97
92
87
83
87
90
94

Low Clouds (% Sky Obscured)

96
92
88
90
91
92
90
89
88
89
90
85
89
83
77
80
81
79
81
83
86

Medium Clouds (% Sky Obscured)

99
99
100
89
75
57
51
40
39
26
13
0
0
0
0
0
0
0
8
20
35

High Clouds (% Sky Obscured)

45
50
45
34
14
13
10
8
6
18
37
51
66
81
81
86
87
83
71
43
15

ISS Passover

Visibility (miles)

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

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

91
95
95
88
74
56
51
46
40
32
23
10
10
9
5
8
7
2
9
10
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
7
7
7
6
5
4
2
5
7
8
7
8
8
8
8
7
6
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
89
92
94
94
96
96
96
96
96
94
92
91
86
83
81
83
86
87
89
92

Pressure (mb)

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

Ozone (du)

327
327
327
327
328
330
331
331
331
330
328
325
322
321
320
319
317
315
313
314
314

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

Generated: 17/12/25 15:55:23. Forecast: 17/12/25 to 23/12/25. Timezone: UTC-5.00