Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 16

Waning Crescent 11%

05:54

14:01

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
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

Sun - Rise: 07:51, Set: 16:37, Transit: 12:14. Moon - Rise: 05:54, Set: 14:01. Civil Dark: 17:11 - 07:17. Nautical Dark: 17:48 - 06:40. Astro Dark: 18:24 - 06:04

Total Clouds (% Sky Obscured)

100
100
100
99
100
100
100
100
100
100
97
91
100
96
79
90
98
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

46
52
55
53
51
56
57
64
69
60
53
33
38
38
22
36
46
53
60
77
100
100
100
100

Medium Clouds (% Sky Obscured)

74
91
96
94
100
100
100
99
100
100
89
85
86
76
72
56
93
98
100
95
98
100
100
100

High Clouds (% Sky Obscured)

86
84
95
99
100
100
100
100
100
100
95
91
100
69
12
67
87
100
87
100
100
52
99
100

ISS Passover

Visibility (miles)

4
8
9
9
9
9
9
9
4
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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
Very Light Rain

Precipitation Probability (%)

0
0
0
3
0
1
4
7
2
2
0
1
10
4
3
3
3
3
1
0
1
8
21
51

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
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-5
-4
-5
-5
-5
-5
-5
-5
-5
-4
-4
-3
-3
-3
-2
-2
-1
-0
0
0
1
1
1
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
92
89
87
87
89
89
89
92
91
86
84
84
82
84
86
89
89
86
88
88
94
98
100

Pressure (mb)

1019
1018
1018
1016
1015
1014
1013
1013
1011
1010
1010
1009
1007
1006
1005
1005
1004
1003
1003
1002
1002
1002
1002
1003

Ozone (du)

268
270
272
273
275
271
269
266
265
266
264
262
264
264
267
268
272
275
281
286
288
292
296
296

Wednesday 17

Waning Crescent 6%

06:58

14:31

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
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

Sun - Rise: 07:51, Set: 16:38, Transit: 12:14. Moon - Rise: 06:58, Set: 14:31. Civil Dark: 17:11 - 07:18. Nautical Dark: 17:49 - 06:40. Astro Dark: 18:24 - 06:05

Total Clouds (% Sky Obscured)

100
100
89
70
96
85
85
75
68
73
69
70
49
90
100
100
100
100
100
100
100
100
98
100

Low Clouds (% Sky Obscured)

100
100
83
51
94
78
78
67
63
73
58
65
46
59
41
57
61
62
63
57
68
70
70
73

Medium Clouds (% Sky Obscured)

100
11
0
0
45
0
0
0
0
6
23
16
17
4
44
100
86
60
99
92
59
54
55
55

High Clouds (% Sky Obscured)

100
85
0
0
0
0
0
0
3
5
0
4
0
82
100
100
100
100
95
100
100
99
91
100

ISS Passover

Visibility (miles)

0
0
0
9
8
9
9
5
9
9
9
8
8
3
3
3
3
7
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

Very Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

59
67
30
12
11
19
6
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.3
0.4
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
13
13
15
15
14
13
11
7
5
3
3
3
5
5
5
5
6
6
8
8
9
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
100
98
86
80
83
84
89
87
89
90
90
89
89
90
92
92
92
91
92
91
92
92
92

Pressure (mb)

1003
1004
1005
1006
1007
1009
1011
1013
1014
1016
1017
1018
1018
1018
1017
1017
1016
1017
1016
1015
1014
1013
1013
1011

Ozone (du)

298
302
311
318
325
331
336
332
325
323
321
319
321
321
320
321
323
324
324
324
321
319
319
318

Thursday 18

Waning Crescent 2%

07:58

15:08

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
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

Sun - Rise: 07:52, Set: 16:38, Transit: 12:15. Moon - Rise: 07:58, Set: 15:08. 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
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

77
92
100
94
83
91
100
88
90
73
100
89
100
98
96
100
100
100
100
99
98
96
96
95

Medium Clouds (% Sky Obscured)

100
47
42
36
40
38
31
32
38
92
100
100
100
100
100
100
100
100
99
100
100
100
91
55

High Clouds (% Sky Obscured)

99
100
100
100
100
100
100
100
100
100
100
91
100
100
100
100
100
100
100
84
58
27
51
61

ISS Passover

Visibility (miles)

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

None
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

4
5
12
13
14
22
48
50
42
69
95
95
95
95
95
95
95
84
77
70
76
81
71
65

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
1.3
1.9
0.4
0.9
0.8
1.4
0.5
0.4
0.4
0.3
0.4
0.5
0.4
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-1
1
2
3
3
4
4
4
4
4
4
4
5
4
4
4
4
4
4
3
3
2
1
0

Relative Humidity (%)

91
94
100
100
100
100
100
100
100
98
94
96
100
96
98
100
100
100
100
100
98
94
89
89

Pressure (mb)

1011
1010
1009
1007
1006
1005
1004
1003
1002
1001
1000
999
998
997
995
993
992
991
991
991
991
991
991
991

Ozone (du)

318
316
316
316
316
316
318
320
320
323
324
320
321
323
327
330
332
336
343
349
351
355
362
374

Friday 19

New Moon 0%

08:49

15:54

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

Sun - Rise: 07:52, Set: 16:39, Transit: 12:15. 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)

100
98
96
93
94
95
96
94
73
70
63
61
58
40
23
8
66
46
55
86
93
100
97
100

Low Clouds (% Sky Obscured)

95
94
94
93
93
93
92
87
72
68
63
61
57
37
21
6
4
4
3
22
32
45
61
86

Medium Clouds (% Sky Obscured)

55
38
19
0
17
33
55
35
27
19
14
10
6
4
2
1
54
46
55
86
93
83
73
100

High Clouds (% Sky Obscured)

90
63
32
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
4
2
5
5
0
0

ISS Passover

Visibility (miles)

7
8
4
0
0
0
0
1
7
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

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

Precipitation Probability (%)

62
51
51
50
49
51
39
35
30
22
23
24
14
14
17
4
5
7
1
3
5
1
6
16

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
15
15
15
14
14
15
15
15
14
14
13
12
11
10
8
7
6
5
4
3
2
4
4

Chance of Frost

Temperature (°C)

1
-1
-2
-4
-5
-7
-8
-9
-10
-11
-12
-12
-12
-12
-12
-13
-13
-13
-14
-14
-13
-13
-13
-12

Feels Like (°C)

-5
-7
-9
-10
-12
-13
-15
-16
-17
-17
-17
-17
-16
-16
-16
-16
-16
-17
-16
-15
-17
-17
-17
-16

Dew Point (°C)

-1
-3
-5
-5
-7
-9
-10
-12
-14
-15
-16
-16
-15
-15
-15
-16
-16
-16
-16
-16
-16
-16
-15
-14

Relative Humidity (%)

86
83
82
89
89
87
87
83
75
73
72
73
75
76
78
78
79
79
84
84
83
83
83
84

Pressure (mb)

992
993
994
994
995
997
998
1000
1003
1005
1007
1009
1010
1012
1013
1014
1016
1017
1017
1017
1017
1017
1017
1016

Ozone (du)

380
383
389
383
387
382
389
397
395
391
381
378
377
374
371
366
366
372
378
371
362
360
353
354

Saturday 20

Waxing Crescent 1%

No Rise

16:51

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
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

Sun - Rise: 07:53, Set: 16:39, Transit: 12:16. Moon - Rise: No Rise, 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
98
95
93
95
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

95
89
83
76
84
93
100
98
97
95
92
88
86
90
93
96
95
93
91
94
97
100
99
97

Medium Clouds (% Sky Obscured)

100
93
87
80
87
94
99
100
100
96
95
93
91
72
61
45
50
55
60
66
76
82
77
72

High Clouds (% Sky Obscured)

5
5
5
0
37
72
100
76
60
50
56
66
80
66
37
8
37
66
95
100
100
100
100
95

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

42
46
48
69
72
69
77
95
73
67
68
63
56
50
43
36
33
31
31
56
76
92
95
95

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

6
8
9
9
9
10
10
9
10
8
8
7
8
9
9
9
9
10
10
11
9
8
7
7

Chance of Frost

Temperature (°C)

-11
-10
-9
-7
-6
-5
-4
-3
-3
-3
-3
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2

Feels Like (°C)

-16
-15
-14
-12
-11
-11
-9
-9
-8
-7
-7
-7
-7
-8
-7
-7
-7
-6
-6
-5
-5
-4
-3
-8

Dew Point (°C)

-13
-12
-10
-8
-7
-6
-5
-4
-4
-3
-3
-3
-3
-3
-4
-4
-5
-5
-6
-6
-5
-4
-3
-3

Relative Humidity (%)

85
90
88
92
94
94
96
94
96
96
96
98
98
98
91
84
79
76
74
71
78
84
92
91

Pressure (mb)

1016
1016
1014
1012
1010
1009
1008
1008
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006
1007
1007
1007
1008
1008
1008

Ozone (du)

352
351
351
352
347
347
345
339
338
341
339
345
350
355
354
354
353
355
357
359
369
380
390
388

Sunday 21

Waxing Crescent 3%

09:32

17:54

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
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 OK
05 OK
06 OK
07 OK
08 OK

Sun - Rise: 07:53, Set: 16:39, Transit: 12:16. Moon - Rise: 09:32, 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)

100
100
100
100
95
91
90
93
97
100
100
100
99
85
71
59
57
54
49
23
13
3
6
8

Low Clouds (% Sky Obscured)

96
93
91
89
84
79
73
82
91
100
100
100
99
82
65
48
43
40
38
23
13
1
2
3

Medium Clouds (% Sky Obscured)

66
52
47
47
35
28
23
16
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

95
68
42
14
22
25
31
19
9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
3
6
9
9
9
9
8
7
6
6
7
8
8
9
9
9
9
9
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
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
83
71
56
47
37
28
25
21
15
14
13
10
10
8
3
4
4
1
2
2
0
1
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
8
8
9
9
10
10
10
10
10
10
10
10
9
8
8
7
7
6
5
4
4
2

Chance of Frost

Temperature (°C)

-2
-2
-2
-1
-1
-2
-2
-3
-3
-4
-5
-6
-7
-8
-10
-11
-12
-13
-14
-15
-16
-17
-17
-16

Feels Like (°C)

-8
-7
-7
-7
-8
-6
-5
-5
-5
-5
-6
-11
-11
-12
-13
-13
-13
-15
-16
-15
-16
-17
-18
-20

Dew Point (°C)

-3
-4
-4
-3
-4
-4
-5
-5
-6
-6
-7
-8
-9
-10
-12
-13
-14
-15
-17
-18
-19
-20
-20
-19

Relative Humidity (%)

91
87
87
86
84
84
84
82
84
84
84
84
85
83
83
81
83
81
81
80
79
78
77
78

Pressure (mb)

1009
1009
1009
1010
1010
1011
1013
1014
1016
1018
1019
1021
1022
1024
1025
1026
1028
1029
1030
1032
1032
1033
1034
1034

Ozone (du)

386
383
378
373
368
367
367
366
365
365
365
367
368
369
368
366
364
363
362
361
354
347
340
332

Monday 22

Waxing Crescent 7%

10:06

19:03

09 Good
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 07:54, Set: 16:40, Transit: 12:17. Moon - Rise: 10:06, 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)

10
24
43
60
76
87
95
98
99
100
100
99
98
96
95
94

Low Clouds (% Sky Obscured)

3
11
22
36
43
57
74
82
91
100
95
91
88
85
82
79

Medium Clouds (% Sky Obscured)

1
4
8
11
14
17
20
33
46
63
80
83
80
75
70
65

High Clouds (% Sky Obscured)

0
11
20
24
22
18
18
20
16
20
20
20
25
4
4
6

ISS Passover

Visibility (miles)

6
4
3
2
0
2
4
7
7
8
9
7
4
2
2
2

Fog (%)

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
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

1
10
16
22
24
25
24
21
18
18
28
35
41
45
48
50

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-15
-14
-11
-9
-7
-6
-6
-5
-5
-5
-6
-5
-5
-5
-5
-5

Feels Like (°C)

-21
-22
-21
-21
-20
-10
-10
-10
-10
-9
-9
-10
-9
-9
-9
-10

Dew Point (°C)

-18
-16
-14
-11
-8
-8
-8
-7
-7
-7
-7
-7
-6
-6
-6
-6

Relative Humidity (%)

79
81
83
87
90
87
85
84
85
87
87
90
90
92
92
90

Pressure (mb)

1034
1034
1033
1033
1032
1031
1031
1030
1030
1029
1028
1028
1027
1026
1026
1026

Ozone (du)

324
317
323
330
337
337
337
336
335
334
332
330
327
325
321
318

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

Generated: 16/12/25 09:22:07. Forecast: 16/12/25 to 22/12/25. Timezone: UTC-5.00