Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 18

Waning Crescent 1%

07:08

15:36

19 Bad
20 OK
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
18 Bad

Sun - Rise: 07:42, Set: 16:32, Transit: 12:07. Moon - Rise: 07:08, Set: 15:36. Civil Dark: 17:08 - 07:06. Nautical Dark: 17:48 - 06:26. Astro Dark: 18:26 - 05:48

Total Clouds (% Sky Obscured)

54
36
67
61
75
63
61
56
76
48
76
76
78
77
77
68
36
36
62
67
71
42
70
48

Low Clouds (% Sky Obscured)

44
36
57
61
40
58
56
56
40
46
74
54
58
56
54
63
30
34
37
22
52
38
62
10

Medium Clouds (% Sky Obscured)

39
34
29
0
30
8
10
0
30
0
0
20
26
28
28
3
2
2
22
34
34
0
40
29

High Clouds (% Sky Obscured)

0
0
0
0
4
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

6
9
5
8
9
8
9
8
9
9
9
9
9
2
1
6
7
1
2
1
1
8
4
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
None
Very Light Rain
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
Very Light Rain
Light Rain
Light Rain
None
None
Very Light Rain

Precipitation Probability (%)

5
4
4
55
51
48
36
34
35
28
19
49
69
77
70
57
46
54
61
66
73
49
42
50

Precipitation Amount (mm)

0
0
0
0.3
0
0
0
0
0
0
0
0.2
0.4
0.6
0.5
0.3
0
0.2
0.3
0.4
0.6
0
0
0.2

Wind Speed/Direction (mph)

18
19
20
21
22
22
23
24
25
27
30
31
31
28
30
29
28
27
27
27
27
28
29
29

Chance of Frost

Temperature (°C)

9
9
10
10
10
10
9
9
9
9
9
8
8
7
8
8
8
7
7
7
7
7
7
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
76
74
74
72
72
64
67
64
64
60
62
63
82
65
58
63
71
75
71
65
59
58
54

Pressure (mb)

1016
1016
1015
1015
1014
1014
1014
1013
1013
1013
1013
1014
1014
1015
1016
1016
1017
1017
1018
1018
1018
1019
1019
1019

Ozone (du)

268
271
274
276
278
275
271
273
274
269
268
282
293
300
301
299
301
311
320
320
318
313
315
316

Wednesday 19

Waning Crescent 0%

08:19

16:01

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
18 Bad

Sun - Rise: 07:44, Set: 16:31, Transit: 12:07. Moon - Rise: 08:19, Set: 16:01. Civil Dark: 17:07 - 07:08. Nautical Dark: 17:47 - 06:28. Astro Dark: 18:26 - 05:49

Total Clouds (% Sky Obscured)

57
56
62
58
60
41
62
24
39
71
72
47
51
53
58
63
58
52
62
81
46
62
45
49

Low Clouds (% Sky Obscured)

10
12
11
9
9
31
57
20
19
50
61
17
6
22
24
43
27
32
60
60
26
28
16
21

Medium Clouds (% Sky Obscured)

36
40
40
58
60
19
2
0
15
24
15
28
49
35
44
24
32
31
7
56
14
30
21
17

High Clouds (% Sky Obscured)

0
4
3
58
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

3
7
8
8
8
9
9
9
9
9
9
9
9
9
9
9
8
7
8
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

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

Precipitation Probability (%)

53
60
61
67
56
41
36
26
23
37
40
51
57
62
61
57
60
55
54
42
41
49
43
43

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

28
27
26
24
23
23
24
25
26
25
25
25
25
24
24
23
22
22
22
23
22
22
21
22

Chance of Frost

Temperature (°C)

7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
57
59
59
59
56
55
54
56
56
58
57
57
56
57
57
58
59
59
58
57
56
55
55

Pressure (mb)

1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022

Ozone (du)

315
310
311
317
324
327
326
324
320
313
311
313
314
313
314
311
308
304
300
298
295
294
294
295

Thursday 20

New Moon 2%

09:27

16:35

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

Sun - Rise: 07:46, Set: 16:30, Transit: 12:08. Moon - Rise: 09:27, Set: 16:35. Civil Dark: 17:06 - 07:09. Nautical Dark: 17:46 - 06:29. Astro Dark: 18:25 - 05:51

Total Clouds (% Sky Obscured)

46
60
55
36
56
54
56
61
34
50
82
96
55
72
79
42
82
88
94
100
100
100
100
100

Low Clouds (% Sky Obscured)

46
39
27
34
56
53
54
59
34
50
51
50
41
20
1
0
13
18
23
29
39
50
61
71

Medium Clouds (% Sky Obscured)

0
16
21
4
0
0
0
0
1
0
26
1
0
1
43
30
80
85
87
100
99
97
92
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
45
21
47
13
96
55
72
49
42
52
68
84
100
100
100
100
100

ISS Passover

Visibility (miles)

7
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 (%)

43
37
28
22
29
18
15
16
12
6
9
13
12
2
1
0
0
0
0
0
0
0
0
8

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)

21
20
19
18
17
16
15
14
14
14
13
12
11
9
7
6
6
6
7
9
9
10
12
13

Chance of Frost

Temperature (°C)

7
7
7
7
7
7
7
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
56
58
60
60
59
56
56
54
54
55
56
56
57
57
57
53
53
54
55
59
60
61
63

Pressure (mb)

1023
1024
1024
1024
1024
1025
1025
1025
1025
1025
1026
1026
1026
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025

Ozone (du)

296
298
295
294
292
292
292
294
294
292
286
281
281
281
278
268
266
268
264
266
269
276
276
278

Friday 21

Waxing Crescent 5%

10:28

17:20

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 OK
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:47, Set: 16:29, Transit: 12:08. Moon - Rise: 10:28, Set: 17:20. Civil Dark: 17:05 - 07:11. Nautical Dark: 17:45 - 06:30. Astro Dark: 18:24 - 05:52

Total Clouds (% Sky Obscured)

100
100
100
100
100
92
84
76
68
62
58
47
36
25
34
47
58
74
87
100
100
100
100
90

Low Clouds (% Sky Obscured)

84
93
91
98
100
72
47
15
32
47
49
42
18
25
34
40
32
36
35
22
41
39
50
53

Medium Clouds (% Sky Obscured)

100
100
100
100
100
92
84
76
68
62
58
47
36
25
34
47
58
69
73
74
80
88
100
87

High Clouds (% Sky Obscured)

100
98
100
100
100
83
63
30
25
45
35
30
36
25
34
47
35
71
86
100
100
100
100
69

ISS Passover

Visibility (miles)

9
9
9
9
9
5
3
4
9
7
8
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

18
30
64
95
95
95
95
95
95
70
33
30
16
18
26
24
27
20
11
3
4
2
1
3

Precipitation Amount (mm)

0
0
0.3
0.7
1.3
1.7
1.9
1.7
0.7
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
16
19
21
23
26
12
12
26
24
22
20
19
18
16
17
16
17
16
15
13
11
10
9

Chance of Frost

Temperature (°C)

9
9
9
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
68
70
74
77
85
90
90
90
90
90
90
88
81
78
79
77
75
73
69
72
72
72
71

Pressure (mb)

1024
1024
1023
1022
1020
1019
1018
1017
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1014
1013
1013
1013

Ozone (du)

282
284
287
285
288
291
292
291
289
287
291
291
292
290
288
286
286
286
285
284
282
283
284
285

Saturday 22

Waxing Crescent 10%

11:17

18:18

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
18 Bad

Sun - Rise: 07:49, Set: 16:28, Transit: 12:08. Moon - Rise: 11:17, Set: 18:18. Civil Dark: 17:05 - 07:12. Nautical Dark: 17:45 - 06:32. Astro Dark: 18:23 - 05:53

Total Clouds (% Sky Obscured)

93
83
83
83
87
83
99
100
100
100
100
100
100
100
100
100
100
100
99
99
99
100
100
100

Low Clouds (% Sky Obscured)

56
56
61
70
75
70
73
76
65
58
50
58
55
53
44
39
36
37
40
44
57
65
73
77

Medium Clouds (% Sky Obscured)

89
62
62
56
44
45
40
35
35
43
53
71
86
96
97
98
99
98
98
98
99
99
100
100

High Clouds (% Sky Obscured)

93
82
83
83
86
83
99
100
100
100
100
100
100
100
100
100
100
89
79
68
79
89
100
85

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
8
7
6

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

Precipitation Probability (%)

6
6
16
20
20
45
60
79
83
82
65
22
20
15
25
29
30
25
23
27
32
34
34
63

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0.5
0.5
0.5
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
11
11
11
11
11
12
10
10
10
11
11
11
11
11
10
10
10
10

Feels Like (°C)

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

Dew Point (°C)

6
6
6
6
6
7
7
7
7
7
8
8
7
7
8
7
7
6
7
7
7
7
7
7

Relative Humidity (%)

72
72
72
73
73
73
73
75
73
73
77
80
81
83
84
80
77
73
76
77
80
80
80
80

Pressure (mb)

1013
1012
1012
1011
1011
1010
1010
1009
1008
1008
1007
1007
1010
1010
1010
1009
1009
1008
1007
1006
1005
1004
1003
1002

Ozone (du)

282
278
275
274
275
278
276
273
272
271
267
263
261
259
257
257
258
259
260
261
262
263
264
264

Sunday 23

Waxing Crescent 17%

11:56

No Set

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
18 Bad

Sun - Rise: 07:50, Set: 16:27, Transit: 12:09. Moon - Rise: 11:56, Set: No Set. Civil Dark: 17:04 - 07:13. Nautical Dark: 17:44 - 06:33. Astro Dark: 18:23 - 05:54

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
98
96
93
90
87
83
80
77
74
78
81
84
87
92
92
81

Low Clouds (% Sky Obscured)

82
87
92
96
100
97
94
91
88
86
84
77
71
64
67
74
74
73
65
56
52
47
41
40

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
95
93
93
90
87
83
80
77
65
60
50
40
46
51
57
40

High Clouds (% Sky Obscured)

68
48
64
81
100
67
33
0
5
10
20
35
40
45
45
45
45
30
30
30
30
30
45
49

ISS Passover

Visibility (miles)

5
4
4
4
4
3
3
3
3
3
4
4
5
5
6
7
7
8
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

86
95
95
95
95
95
95
95
95
95
95
95
95
95
95
90
72
60
48
37
34
34
41
41

Precipitation Amount (mm)

0.5
0.8
1
1.2
1.5
1.5
1.4
1.2
1.3
1.2
1
1.1
1.2
1.2
0.8
0.5
0.3
0.2
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
9
11
13
14
18
16
15
15
14
25
38
37
37
38
37
36
36
35
34
33
31
29
27

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
7
7
7
6
6
6
5
5
5
5
5
-1
-2
-5
-5
-5
-5
-2
-2
-2
-2
-2
-2

Dew Point (°C)

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

Relative Humidity (%)

83
85
88
90
91
93
95
93
95
93
95
94
93
90
87
84
81
78
77
74
72
72
70
69

Pressure (mb)

1001
1000
998
997
995
994
992
991
990
990
991
991
992
993
994
995
996
997
998
999
1000
1001
1001
1002

Ozone (du)

265
266
266
268
269
271
273
275
277
279
281
283
286
288
291
291
291
290
292
294
296
300
304
308

Monday 24

Waxing Crescent 25%

12:24

19:25

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

Sun - Rise: 07:52, Set: 16:26, Transit: 12:09. Moon - Rise: 12:24, Set: 19:25. Civil Dark: 17:03 - 07:15. Nautical Dark: 17:43 - 06:34. Astro Dark: 18:22 - 05:56

Total Clouds (% Sky Obscured)

65
50
36
22
7
9
11
14
42
68
91
80
70
58
50
40
27

Low Clouds (% Sky Obscured)

41
44
36
22
7
9
11
14
42
61
79
67
58
49
43
36
27

Medium Clouds (% Sky Obscured)

20
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

33
18
11
4
0
0
0
0
0
0
0
0
1
1
5
9
12

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

36
29
29
28
22
26
26
23
28
29
30
36
32
24
28
25
21

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

28
28
29
29
30
31
30
29
28
27
25
24
23
23
22
21
20

Chance of Frost

Temperature (°C)

10
10
10
10
10
10
9
9
9
9
9
10
10
10
10
10
10

Feels Like (°C)

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

Dew Point (°C)

5
5
5
5
5
6
5
5
5
5
4
3
3
4
4
4
4

Relative Humidity (%)

69
71
71
73
74
76
76
74
74
72
67
64
64
66
66
66
66

Pressure (mb)

1003
1004
1005
1006
1007
1007
1008
1009
1009
1010
1011
1011
1012
1013
1014
1014
1014

Ozone (du)

303
299
295
297
299
301
300
299
298
294
290
287
285
282
280
279
278

Forecast for Penzance, Cornwall, United Kingdom (50.12,-5.54)

Generated: 18/11/25 19:14:47. Forecast: 18/11/25 to 24/11/25. Timezone: UTC+0.00