Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 13

Waning Crescent 25%

02:06

12:53

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 OK

Sun - Rise: 07:15, Set: 16:15, Transit: 11:45. Moon - Rise: 02:06, Set: 12:53. Civil Dark: 16:47 - 06:43. Nautical Dark: 17:23 - 06:07. Astro Dark: 17:58 - 05:32

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
97
90
94
98
99
100
86
96
92
96
74
45
51
27

Low Clouds (% Sky Obscured)

17
16
54
65
84
80
65
77
76
74
68
71
79
69
34
68
66
71
77
94
63
22
51
27

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
98
99
99
95
92
82
87
92
98
99
80
54
22
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
50
55
31
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
8
4
3
9
9
9
9
9
9
9
9
9
9
9
9
9
8
4
3
2
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
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
24
7
11
19
20
15
12
12
10
3
2
2
2
5
8
18
11
22
18
8
5
2

Precipitation Amount (mm)

0
0
0.1
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
4
4
2
2
2
4
3
3
3
3
3
3
3
4
7
8
8
8
8
9
8
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
94
92
94
92
79
81
84
87
85
89
90
87
77
70
65
66
66
68
68
70
80

Pressure (mb)

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

Ozone (du)

330
325
323
321
320
318
321
322
322
323
327
331
335
339
343
348
352
354
350
353
365
363
360
359

Sunday 14

Waning Crescent 18%

03:10

13:14

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

Sun - Rise: 07:16, Set: 16:15, Transit: 11:46. Moon - Rise: 03:10, Set: 13:14. Civil Dark: 16:48 - 06:43. Nautical Dark: 17:24 - 06:07. Astro Dark: 17:58 - 05:33

Total Clouds (% Sky Obscured)

4
1
0
0
0
4
4
5
3
3
3
3
3
2
2
4
22
59
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

2
1
0
0
0
3
4
5
3
3
3
3
3
2
2
4
4
25
50
58
52
7
19
36

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
43
100
100
100
100
98
96

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
5
100
100
100
100
100
100

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 (%)

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

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
9
9
9
9
10
9
8
8
8
8
6
5
6
8
9
9
10
10
9
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-11
-12
-13
-15
-16
-16
-16
-17
-18
-17
-17
-17
-17
-16
-16
-14
-13
-13
-13
-13
-13
-13
-13
-13

Dew Point (°C)

-11
-14
-14
-16
-17
-17
-17
-18
-18
-18
-18
-18
-18
-18
-17
-17
-16
-16
-15
-13
-13
-12
-12
-12

Relative Humidity (%)

80
69
69
65
66
69
70
68
68
68
69
70
70
70
70
65
61
58
58
64
67
68
70
70

Pressure (mb)

1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1018
1019
1019
1019
1019
1018
1018
1017
1017
1017
1017
1017

Ozone (du)

361
356
350
341
338
341
346
349
355
364
382
361
346
330
308
308
306
293
291
287
290
294
291
294

Monday 15

Waning Crescent 11%

04:14

13:39

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

Sun - Rise: 07:16, Set: 16:16, Transit: 11:46. Moon - Rise: 04:14, Set: 13:39. Civil Dark: 16:48 - 06:44. Nautical Dark: 17:24 - 06:08. Astro Dark: 17:59 - 05:33

Total Clouds (% Sky Obscured)

91
97
96
93
91
88
89
76
67
67
63
26
21
19
4
4
5
9
20
47
93
100
95
92

Low Clouds (% Sky Obscured)

22
23
43
19
28
35
34
29
32
34
28
25
21
19
3
3
3
3
7
23
6
6
7
5

Medium Clouds (% Sky Obscured)

90
95
93
83
78
79
89
76
65
67
57
3
2
0
0
0
0
0
0
26
43
48
93
88

High Clouds (% Sky Obscured)

0
0
0
0
0
0
85
76
5
0
0
2
0
0
0
0
2
5
12
21
91
100
82
70

ISS Passover

Visibility (miles)

9
9
9
9
9
8
4
4
4
4
4
4
4
4
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
1
1
0
0
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
None
None
None

Precipitation Probability (%)

3
3
4
6
7
6
5
4
3
3
3
0
0
0
0
0
0
0
0
0
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)

9
7
5
3
3
3
2
2
1
2
2
2
2
2
2
2
3
4
4
5
4
4
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-12
-12
-11
-11
-10
-10
-10
-10
-10
-10
-11
-11
-12
-12
-12
-12
-11
-10
-10
-9
-9
-8
-6
-6

Relative Humidity (%)

72
74
77
80
88
88
92
90
90
92
90
90
88
90
86
77
70
66
63
63
62
71
85
90

Pressure (mb)

1017
1017
1017
1017
1017
1017
1018
1018
1019
1019
1019
1019
1020
1021
1021
1022
1022
1021
1020
1019
1019
1019
1019
1019

Ozone (du)

295
294
300
310
321
319
317
331
343
356
358
359
365
358
354
350
342
330
320
306
288
278
271
267

Tuesday 16

Waning Crescent 6%

05:19

14:10

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: 07:17, Set: 16:16, Transit: 11:47. Moon - Rise: 05:19, Set: 14:10. Civil Dark: 16:48 - 06:45. Nautical Dark: 17:25 - 06:09. Astro Dark: 17:59 - 05:34

Total Clouds (% Sky Obscured)

88
90
95
100
100
100
100
93
85
79
86
88
84
73
59
60
57
59
54
69
72
100
92
86

Low Clouds (% Sky Obscured)

4
4
8
8
4
4
5
4
24
6
4
4
4
13
7
25
46
31
10
15
17
69
73
75

Medium Clouds (% Sky Obscured)

82
86
90
88
90
65
100
93
85
79
86
84
55
47
37
30
33
42
38
28
27
26
17
9

High Clouds (% Sky Obscured)

60
73
86
94
100
100
100
72
44
16
11
4
1
9
16
25
24
24
24
49
72
100
67
33

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
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
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
2
0
0
0
0
0
0
0
4
3

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
4
4
4
4
5
5
5
6
5
5
5
6
7
6
6
7
6
6
7
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-9
-9
-9
-10
-11
-11
-10
-10
-10
-10
-10
-9
-8
-8
-4
-4
-2
-1
1
1
1
-2
-3

Dew Point (°C)

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

Relative Humidity (%)

90
89
87
87
90
90
90
87
87
87
89
90
92
90
89
83
78
77
77
79
80
77
79
80

Pressure (mb)

1019
1019
1018
1018
1018
1017
1016
1016
1015
1014
1013
1013
1012
1012
1011
1011
1010
1009
1007
1007
1007
1008
1008
1009

Ozone (du)

268
269
269
269
271
269
269
269
268
267
267
267
268
270
272
273
276
281
285
288
295
297
302
306

Wednesday 17

Waning Crescent 2%

06:22

14:47

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

Sun - Rise: 07:18, Set: 16:16, Transit: 11:47. Moon - Rise: 06:22, Set: 14:47. Civil Dark: 16:49 - 06:45. Nautical Dark: 17:25 - 06:09. Astro Dark: N/A - 05:34

Total Clouds (% Sky Obscured)

73
56
55
65
71
90
82
60
44
25
34
44
47
61
74
91
91
92
95
97
99
100
99
99

Low Clouds (% Sky Obscured)

73
51
53
57
50
49
33
20
10
0
13
24
32
27
23
18
26
32
40
61
82
100
97
94

Medium Clouds (% Sky Obscured)

0
0
0
0
28
47
70
44
21
1
1
0
0
13
25
38
49
56
57
56
68
77
93
96

High Clouds (% Sky Obscured)

0
4
8
12
39
60
82
60
42
24
23
26
22
36
61
85
89
90
95
89
87
77
67
66

ISS Passover

Visibility (miles)

9
9
9
5
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
6
5
5

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
None
None
Snow

Precipitation Probability (%)

5
6
24
15
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
33
54

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)

10
10
10
11
10
10
9
8
8
6
4
3
3
2
2
2
3
5
6
8
8
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
77
76
80
66
66
66
68
66
69
66
74
79
82
76
69
64
60
58
54
57
58
60
68

Pressure (mb)

1010
1012
1012
1014
1016
1017
1019
1020
1022
1023
1023
1023
1025
1025
1026
1026
1026
1025
1023
1022
1021
1020
1019
1018

Ozone (du)

309
310
317
323
332
330
324
316
313
313
317
316
313
313
310
308
306
305
305
304
303
302
300
302

Thursday 18

Waning Crescent 0%

07:20

15:34

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: 07:18, Set: 16:17, Transit: 11:48. Moon - Rise: 07:20, Set: 15:34. Civil Dark: 16:49 - 06:46. Nautical Dark: 17:25 - 06:10. Astro Dark: 18:00 - 05:35

Total Clouds (% Sky Obscured)

98
99
99
100
100
100
100
100
100
100
100
100
100
80
62
39
34
33
28
41
54
66
73
72

Low Clouds (% Sky Obscured)

90
93
97
100
96
92
87
84
82
79
81
84
86
80
62
39
34
33
28
41
54
66
64
39

Medium Clouds (% Sky Obscured)

95
96
97
98
99
100
100
100
100
100
89
79
70
61
42
10
6
7
8
9
15
20
14
9

High Clouds (% Sky Obscured)

52
33
32
7
38
88
100
100
100
100
90
84
90
80
62
39
34
30
0
1
4
6
3
2

ISS Passover

Visibility (miles)

6
6
5
3
1
1
0
0
0
0
0
3
6
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

Ice pellet
Ice pellet
Ice pellet
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None

Precipitation Probability (%)

76
79
82
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
77
41
44
39

Precipitation Amount (mm)

0.5
0.5
0.5
0.8
1
1
1.1
1.5
1.4
1.3
1.4
1.2
1.4
1.9
2.5
2.4
1
1.2
0.6
0.5
0.4
0
0
0

Wind Speed/Direction (mph)

8
8
8
8
7
7
7
7
6
6
6
7
9
11
11
13
16
14
12
10
11
13
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
83
88
91
96
98
98
98
100
100
98
90
82
75
75
75
75
75
75
74
74
74
74
72

Pressure (mb)

1018
1017
1015
1013
1012
1010
1008
1006
1005
1004
1002
1001
1000
999
999
999
999
999
999
999
1000
1001
1002
1004

Ozone (du)

303
305
306
308
309
310
312
313
319
325
331
333
336
339
344
348
353
358
364
369
371
373
374
373

Friday 19

New Moon 1%

08:12

16:30

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

Sun - Rise: 07:19, Set: 16:17, Transit: 11:48. Moon - Rise: 08:12, Set: 16:30. Civil Dark: 16:50 - 06:46. Nautical Dark: 17:26 - 06:10. Astro Dark: 18:00 - 05:36

Total Clouds (% Sky Obscured)

64
54
48
42
39
36
17
20
30
29
44
58
73
70
72
80
90
100
100

Low Clouds (% Sky Obscured)

22
34
37
40
39
34
8
4
7
10
11
10
9
10
11
14
27
40
52

Medium Clouds (% Sky Obscured)

1
0
0
0
1
2
3
2
2
1
5
10
19
35
54
70
80
95
95

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
12
23
20
5
0
0
0
5
9

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

30
27
21
13
20
20
9
11
10
3
5
5
1
0
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-6
-7
-8
-8
-8
-8
-9
-9
-11
-11
-11
-11
-11
-12
-13
-12
-12
-12
-11

Dew Point (°C)

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

Relative Humidity (%)

72
71
69
69
69
70
71
73
76
79
80
80
80
82
75
71
67
67
66

Pressure (mb)

1005
1007
1008
1010
1011
1012
1014
1015
1016
1017
1019
1020
1022
1023
1024
1025
1026
1025
1024

Ozone (du)

371
370
366
362
357
356
354
352
349
345
341
337
333
329
326
322
319
317
314

Forecast for Chester, Windsor, United States of America (43.26,-72.60)

Generated: 13/12/25 18:37:37. Forecast: 13/12/25 to 19/12/25. Timezone: UTC-5.00