Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 3%

09:22

17:29

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

Sun - Rise: 07:11, Set: 16:13, Transit: 11:42. Moon - Rise: 09:22, Set: 17:29. Civil Dark: 16:45 - 06:39. Nautical Dark: 17:21 - 06:04. Astro Dark: 17:56 - 05:29

Total Clouds (% Sky Obscured)

46
47
44
17
2
23
12
23
22
27
28
46
62
52
30
2
1
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

46
47
0
0
0
23
12
23
22
27
28
46
61
30
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

2
10
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)

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 (%)

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 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)

13
14
14
13
13
12
11
12
11
11
11
11
11
12
11
11
11
12
12
12
11
11
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-2
-3
-6
-8
-8
-9
-9
-9
-10
-10
-10
-11
-11
-11
-11
-12
-14
-15
-15
-16
-16
-16
-16
-17

Relative Humidity (%)

54
52
48
46
49
51
53
53
54
55
55
55
56
57
57
54
50
47
45
44
45
44
40
36

Pressure (mb)

1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1021
1022
1022
1023
1025
1025
1026
1026
1027
1028
1029
1029
1029

Ozone (du)

291
294
295
299
304
310
317
318
311
310
314
315
317
322
321
324
332
340
341
348
345
348
353
353

Monday 22

Waxing Crescent 7%

09:52

18:36

11 Good
12 Good
13 Good
14 Good
15 Good
16 OK
17 OK
18 OK
19 OK
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

Sun - Rise: 07:12, Set: 16:14, Transit: 11:43. Moon - Rise: 09:52, Set: 18:36. Civil Dark: 16:46 - 06:40. Nautical Dark: 17:22 - 06:04. Astro Dark: 17:56 - 05:30

Total Clouds (% Sky Obscured)

0
3
2
8
12
20
28
31
44
78
88
100
100
100
100
100
98
78
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
6
1
16
1
4
2
4
4
3
3
4
2
2
2
2
10
23
36

Medium Clouds (% Sky Obscured)

0
0
0
8
12
16
25
14
19
26
16
61
92
100
100
100
37
30
25
77
80
99
97
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
16
17
55
77
100
100
100
100
100
98
78
99
100
100
100
100
10

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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
6
14
24

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)

12
12
12
11
9
7
5
4
3
3
4
4
4
4
4
4
4
3
2
3
1
1
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-17
-17
-16
-15
-14
-13
-13
-13
-12
-12
-11
-10
-9
-9
-8
-8
-7
-7
-7
-6
-6
-6
-7
-6

Relative Humidity (%)

33
32
33
35
37
41
46
48
51
52
53
59
63
65
67
69
71
73
75
76
76
74
67
63

Pressure (mb)

1029
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1025
1025
1025
1025
1024
1024
1025
1024
1024
1025
1024

Ozone (du)

356
354
354
351
346
347
346
350
353
348
348
349
350
351
353
354
350
347
344
343
342
341
339
337

Tuesday 23

Waxing Crescent 13%

10:16

19:44

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
09 Bad
10 Bad

Sun - Rise: 07:12, Set: 16:15, Transit: 11:43. Moon - Rise: 10:16, Set: 19:44. Civil Dark: 16:47 - 06:40. Nautical Dark: 17:22 - 06:04. Astro Dark: 17:57 - 05:30

Total Clouds (% Sky Obscured)

99
100
96
96
93
92
93
100
100
100
99
95
98
100
99
98
98
100
100
87
65
58
38
36

Low Clouds (% Sky Obscured)

39
43
41
37
35
24
53
84
99
100
98
91
95
100
95
94
95
96
97
87
65
57
38
36

Medium Clouds (% Sky Obscured)

96
100
95
95
93
92
86
87
90
87
91
92
95
99
58
17
13
20
20
30
24
17
11
7

High Clouds (% Sky Obscured)

10
5
4
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)

9
9
9
9
9
9
9
9
9
9
1
0
0
0
0
0
0
0
0
2
8
9
9
9

Fog (%)

0
0
0
0
0
0
0
4
95
98
98
98
2
1
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

36
25
18
12
5
1
0
1
8
34
75
85
88
86
85
86
77
78
67
62
38
40
42
34

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.5
0.6
0.6
0.5
0.5
0.5
0.4
0.4
0.2
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

0
1
1
1
0
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-2
-2
-0
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
59
60
64
67
74
77
77
80
81
87
98
98
100
100
100
100
100
98
98
98
96
84
77

Pressure (mb)

1024
1022
1022
1022
1022
1021
1021
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1017
1017
1017
1018
1018
1019
1019

Ozone (du)

337
330
328
329
327
327
329
333
334
335
333
337
336
336
335
334
335
337
340
342
346
345
343
338

Wednesday 24

Waxing Crescent 21%

10:38

20:53

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

Sun - Rise: 07:12, Set: 16:15, Transit: 11:44. Moon - Rise: 10:38, Set: 20:53. Civil Dark: 16:47 - 06:40. Nautical Dark: 17:23 - 06:05. Astro Dark: 17:57 - 05:30

Total Clouds (% Sky Obscured)

23
17
18
21
22
15
9
3
8
12
50
58
61
48
84
91
99
99
98
98
75
100
99
98

Low Clouds (% Sky Obscured)

23
17
18
21
20
12
8
3
3
2
5
1
1
1
2
18
5
16
13
20
16
19
9
29

Medium Clouds (% Sky Obscured)

4
0
0
0
0
0
0
0
2
3
4
14
46
26
70
91
97
97
56
34
18
20
83
42

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
4
1
35
65
94
93
98
98
75
100
99
82

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 (%)

24
2
3
2
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
63
64
62
62
65
68
72
75
79
81
79
84
81
84
76
71
73
73
81
81
77
66
57

Pressure (mb)

1019
1019
1019
1020
1021
1023
1024
1025
1026
1026
1026
1027
1026
1026
1026
1026
1025
1024
1024
1023
1022
1022
1022
1021

Ozone (du)

336
339
338
335
334
331
329
328
326
321
318
316
316
316
318
319
321
321
323
322
321
323
324
324

Thursday 25

Waxing Crescent 30%

10:58

22:01

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
09 Bad
10 Bad

Sun - Rise: 07:13, Set: 16:16, Transit: 11:44. Moon - Rise: 10:58, Set: 22:01. Civil Dark: 16:48 - 06:41. Nautical Dark: 17:23 - 06:05. Astro Dark: 17:58 - 05:31

Total Clouds (% Sky Obscured)

95
93
95
98
100
100
100
100
100
100
100
100
100
100
99
98
97
99
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

63
74
84
84
86
72
56
42
43
45
46
64
82
100
21
42
63
67
71
75
83
92
100
100

Medium Clouds (% Sky Obscured)

50
57
76
83
95
95
90
90
95
100
95
81
93
100
87
77
67
74
82
91
94
97
100
100

High Clouds (% Sky Obscured)

63
45
63
81
100
99
98
97
85
99
100
100
100
100
71
74
75
83
92
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3
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

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
Light Rain

Precipitation Probability (%)

1
1
2
3
1
21
26
18
8
2
3
17
23
30
17
17
7
19
21
20
34
54
75
95

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
0.3
1.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
59
62
64
73
77
83
86
89
91
93
94
98
98
100
98
100
100
100
100
100
98
100
98

Pressure (mb)

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

Ozone (du)

323
321
319
321
319
319
318
318
314
311
310
307
305
304
303
301
299
296
293
290
287
287
286
286

Friday 26

Waxing Crescent 41%

10:58

23:11

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 OK
02 OK
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good

Sun - Rise: 07:13, Set: 16:17, Transit: 11:45. Moon - Rise: 10:58, Set: 23:11. Civil Dark: 16:49 - 06:41. Nautical Dark: 17:24 - 06:05. Astro Dark: 17:58 - 05:31

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
99
98
77
60
45
42
38
35
28
16
9
4
1
0
0
0
0
15

Low Clouds (% Sky Obscured)

100
100
100
100
100
99
99
98
77
60
45
42
38
35
28
16
9
4
1
0
0
0
0
0

Medium Clouds (% Sky Obscured)

100
100
100
100
100
82
70
58
48
46
40
30
21
10
6
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

100
100
100
100
100
67
33
0
11
22
33
22
11
0
0
0
0
0
0
0
0
0
0
12

ISS Passover

Visibility (miles)

0
1
1
4
7
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

Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
95
95
91
85
63
50
40
20
10
7
1
0
0
0
0
0
0
0

Precipitation Amount (mm)

2.4
3
2.4
1.9
1.4
1.1
0.9
0.8
0.6
0.6
0.3
0.1
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-2
-2
1
1
1
2
2
2
-7
-9
-10
-10
-10
-10
-14
-13
-13
-13
-13
-14
-13
-13
-12

Dew Point (°C)

3
3
3
2
1
-1
-2
-4
-5
-8
-10
-13
-14
-15
-15
-16
-17
-18
-19
-19
-20
-20
-21
-21

Relative Humidity (%)

98
96
98
91
86
80
78
74
71
68
65
62
60
58
57
54
52
49
46
45
43
38
35
32

Pressure (mb)

1004
1001
999
999
1000
1000
1001
1002
1003
1005
1007
1010
1011
1013
1015
1016
1018
1019
1020
1022
1023
1024
1025
1026

Ozone (du)

285
284
283
286
289
292
302
312
321
328
335
342
351
359
367
372
378
383
383
384
384
385
386
387

Saturday 27

First Quarter 52%

11:19

00:22

11 OK
12 OK
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

Sun - Rise: 07:13, Set: 16:17, Transit: 11:45. Moon - Rise: 11:19, Set: 00:22. Civil Dark: 16:49 - 06:41. Nautical Dark: 17:25 - 06:06. Astro Dark: 17:59 - 05:31

Total Clouds (% Sky Obscured)

30
45
62
79
96
94
93
92
85
78
72
81
91
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
8
16
24
25
24
25
25
26
27
47
68
89
89
89
89

Medium Clouds (% Sky Obscured)

1
2
11
21
31
50
68
87
71
54
38
51
64
77
81
84
88
92
96
100

High Clouds (% Sky Obscured)

26
22
53
74
96
92
85
79
68
58
48
63
76
85
96
97
100
100
99
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

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
Snow

Precipitation Probability (%)

0
0
0
0
0
1
4
7
7
5
0
0
0
0
4
8
13
26
34
40

Precipitation Amount (mm)

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-12
-12
-11
-10
-10
-11
-11
-11
-11
-11
-10
-10
-10
-10
-10
-9
-9
-9
-9
-9

Dew Point (°C)

-21
-21
-21
-20
-20
-19
-19
-19
-18
-18
-18
-17
-17
-17
-17
-16
-14
-13
-11
-9

Relative Humidity (%)

30
29
27
29
31
33
36
37
39
39
41
42
42
41
41
43
46
48
55
63

Pressure (mb)

1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1023
1022
1021
1020
1019
1017
1016
1014

Ozone (du)

385
384
383
380
378
375
370
366
361
362
364
365
363
361
359
362
365
367
366
365

Forecast for Boxford, Essex, United States of America (42.66,-70.99)

Generated: 21/12/25 11:35:54. Forecast: 21/12/25 to 27/12/25. Timezone: UTC-5.00