Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 4

Full Moon 100%

15:34

09:21

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

Sun - Rise: 08:04, Set: 15:48, Transit: 11:56. Moon - Rise: 15:34, Set: 09:21. Civil Dark: 16:30 - 07:23. Nautical Dark: 17:15 - 06:38. Astro Dark: 17:57 - 05:55

Total Clouds (% Sky Obscured)

92
94
94
90
88
50
41
30
18
5
5
15
66
95
100
100
75
79
94
99
98
100
100
100

Low Clouds (% Sky Obscured)

74
61
56
55
49
43
41
30
18
5
0
0
14
27
39
42
46
53
57
84
65
72
78
95

Medium Clouds (% Sky Obscured)

92
94
92
86
85
50
41
30
18
5
5
15
20
13
86
85
64
68
86
94
96
100
98
100

High Clouds (% Sky Obscured)

55
70
65
4
0
0
0
0
0
0
0
0
28
55
99
93
30
44
74
25
40
100
86
100

ISS Passover

Visibility (miles)

4
2
1
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
1
2
0
1
0
0
0
0
0
0
0
0
0
2
13
7
0
0
0
0
0

Precipitation Type

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
Very Light Rain

Precipitation Probability (%)

95
95
42
15
14
12
9
4
4
1
0
0
0
0
0
0
0
0
0
0
0
2
30
82

Precipitation Amount (mm)

1
0.9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

5
5
5
5
5
5
5
5
4
4
3
3
3
2
2
3
3
4
5
5
6
6
6
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
93
94
86
83
83
88
85
80
80
80
79
80
83
85
85
83
83
83
83
82
82
82
82

Pressure (mb)

995
996
997
998
998
999
1000
1000
1001
1001
1002
1002
1003
1003
1003
1003
1003
1003
1003
1002
1001
1000
999
997

Ozone (du)

336
341
343
346
348
346
345
347
350
352
353
350
345
342
336
330
324
324
319
314
313
309
309
306

Friday 5

Waning Gibbous 98%

16:47

10:28

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
16 Bad

Sun - Rise: 08:06, Set: 15:48, Transit: 11:57. Moon - Rise: 16:47, Set: 10:28. Civil Dark: 16:30 - 07:24. Nautical Dark: 17:15 - 06:39. Astro Dark: 17:57 - 05:57

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
98
97
91
100
100
100
100
100
100
100
100
100
100
100
97
93
100
96

Low Clouds (% Sky Obscured)

100
100
96
100
100
86
95
90
84
74
71
67
81
65
61
66
74
86
77
69
49
44
41
89

Medium Clouds (% Sky Obscured)

94
100
100
70
98
100
32
95
68
100
94
100
100
88
97
100
56
100
99
97
66
57
91
71

High Clouds (% Sky Obscured)

100
100
100
40
100
100
4
0
1
31
100
100
85
100
100
100
100
100
100
100
67
89
95
73

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
38
0
0
0
1
1
0
0
0
0
3
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

95
95
95
95
95
65
95
43
25
77
82
90
47
53
95
37
10
31
65
35
16
49
60
28

Precipitation Amount (mm)

1.1
2.9
1.3
0.7
1
0
1.1
0
0
0.5
0.6
0.7
0
0
1.1
0
0
0
0.4
0
0
0
0.2
0

Wind Speed/Direction (mph)

17
21
21
20
19
15
14
14
13
13
14
14
15
14
14
16
11
11
11
11
12
12
15
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
86
93
91
88
93
91
87
85
84
87
90
87
88
87
85
85
82
85
88
82
81
84
85

Pressure (mb)

996
994
993
992
990
989
989
988
988
988
988
987
987
987
987
988
988
989
989
989
989
990
991
991

Ozone (du)

305
307
309
314
310
308
310
311
311
309
307
306
305
299
298
296
296
298
297
296
295
291
293
294

Saturday 6

Waning Gibbous 93%

No Rise

11:12

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
16 Bad

Sun - Rise: 08:07, Set: 15:47, Transit: 11:57. Moon - Rise: No Rise, Set: 11:12. Civil Dark: 16:29 - 07:25. Nautical Dark: 17:15 - 06:40. Astro Dark: 17:57 - 05:58

Total Clouds (% Sky Obscured)

100
96
93
95
98
96
98
96
100
100
89
100
100
77
95
100
96
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

85
94
83
89
96
92
96
92
99
100
65
73
56
30
33
37
43
37
33
50
66
84
87
89

Medium Clouds (% Sky Obscured)

70
87
73
40
38
15
15
17
12
50
25
9
0
45
55
88
45
50
35
46
50
63
75
88

High Clouds (% Sky Obscured)

97
49
60
48
0
0
0
0
4
17
60
100
100
73
92
100
94
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
5
4
5
9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
2
0
0
2

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

Precipitation Probability (%)

43
57
66
55
35
23
27
6
2
2
3
0
0
0
0
0
1
19
35
57
95
95
72
57

Precipitation Amount (mm)

0
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.6
1
0.3
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
9
9
9
9
9
8
7
7
7
7
7
8
8
8
8
8
8
9

Feels Like (°C)

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

Dew Point (°C)

6
6
7
7
7
7
7
7
7
6
7
6
5
6
5
5
5
6
6
7
7
7
8
8

Relative Humidity (%)

82
82
85
85
87
85
85
85
85
84
85
87
87
88
87
85
87
87
91
95
96
96
98
98

Pressure (mb)

992
993
993
994
995
995
996
997
998
999
999
1000
1000
1000
1000
1001
1001
1001
1001
1000
999
998
998
997

Ozone (du)

296
294
289
291
289
283
284
288
293
290
289
288
288
290
290
291
292
292
291
292
297
299
298
299

Sunday 7

Waning Gibbous 86%

18:16

11:39

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 OK
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:08, Set: 15:47, Transit: 11:58. Moon - Rise: 18:16, Set: 11:39. Civil Dark: 16:29 - 07:26. Nautical Dark: 17:14 - 06:41. Astro Dark: 17:57 - 05:59

Total Clouds (% Sky Obscured)

100
100
100
100
95
84
82
60
76
49
73
72
74
38
92
99
100
100
100
91
81
74
83
90

Low Clouds (% Sky Obscured)

93
95
98
81
81
63
43
43
54
41
49
51
41
35
34
68
72
34
30
29
29
29
32
33

Medium Clouds (% Sky Obscured)

100
87
79
57
79
60
69
34
53
22
35
56
50
19
41
56
83
66
65
43
22
18
49
78

High Clouds (% Sky Obscured)

100
73
43
8
0
0
8
0
0
1
21
25
30
19
67
83
84
94
100
82
57
35
57
78

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

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
None
None
None
None

Precipitation Probability (%)

78
95
95
95
95
68
38
33
32
34
31
21
6
5
9
11
5
2
2
12
15
2
11
14

Precipitation Amount (mm)

0.5
0.9
1
1.1
0.7
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
10
11
11
11
13
17
21
20
19
18
18
17
15
14
14
13
12
14
15
15
15
15
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
88
88
87
88
80
82
84
85
81
88
85
84
85
87
84
77
78
77
81
84
82
80
82

Pressure (mb)

996
996
995
994
994
993
993
993
994
996
997
997
998
998
999
1000
1000
1000
1001
1001
1001
1002
1002
1003

Ozone (du)

298
297
296
297
301
301
302
305
306
305
304
306
309
315
319
324
329
332
333
336
336
336
335
336

Monday 8

Waning Gibbous 77%

19:48

11:57

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
16 Bad

Sun - Rise: 08:09, Set: 15:47, Transit: 11:58. Moon - Rise: 19:48, Set: 11:57. Civil Dark: 16:29 - 07:27. Nautical Dark: 17:14 - 06:42. Astro Dark: 17:57 - 05:59

Total Clouds (% Sky Obscured)

100
98
95
93
85
97
73
100
100
91
100
100
98
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

37
34
35
38
38
38
36
40
44
47
45
42
38
79
85
91
89
91
93
90
88
87
86
84

Medium Clouds (% Sky Obscured)

90
89
87
86
48
64
3
46
52
25
71
85
96
90
85
83
88
93
100
100
100
100
99
99

High Clouds (% Sky Obscured)

100
89
76
65
55
87
67
100
99
91
100
100
98
96
97
100
100
100
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
7
4
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
1
1
0
1
1
0
11
18
26
68
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7
1.3
1.3
1.3
1.7
1.3
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
6
5
6
5
6
5
5
6
5
5
5
6
6
6
6
5
6
7
8
7
8

Dew Point (°C)

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

Relative Humidity (%)

82
84
87
87
88
90
88
88
88
87
85
84
84
87
87
88
90
91
93
95
95
95
96
95

Pressure (mb)

1004
1004
1005
1005
1005
1006
1006
1006
1007
1007
1008
1008
1008
1008
1007
1006
1006
1005
1004
1002
1001
999
997
996

Ozone (du)

338
342
346
352
355
357
357
349
347
344
338
335
322
313
309
305
301
300
299
298
298
297
297
297

Tuesday 9

Waning Gibbous 67%

21:16

12:09

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
16 Bad

Sun - Rise: 08:10, Set: 15:47, Transit: 11:58. Moon - Rise: 21:16, Set: 12:09. Civil Dark: 16:29 - 07:28. Nautical Dark: 17:14 - 06:43. Astro Dark: 17:57 - 06:00

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
94
89
86
81
76
67
73
83
94
83
74
65
65
73
79
77
90

Low Clouds (% Sky Obscured)

83
85
87
88
92
96
100
91
82
73
77
76
67
73
68
63
59
56
56
56
60
63
62
56

Medium Clouds (% Sky Obscured)

99
99
98
98
70
45
19
15
9
0
4
8
12
19
28
36
40
43
47
46
46
45
55
45

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
77
53
24
13
9
1
12
24
36
26
17
7
28
49
69
73
76

ISS Passover

Visibility (miles)

2
2
4
7
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

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
Very Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

95
95
95
95
80
56
31
28
25
19
16
13
5
9
10
5
13
25
48
55
59
70
64
50

Precipitation Amount (mm)

1
1.3
1
0.7
0.5
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.4
0.2

Wind Speed/Direction (mph)

13
16
16
16
17
17
18
19
20
20
21
23
24
25
26
27
27
26
25
25
24
23
21
20

Chance of Frost

Temperature (°C)

11
12
12
12
12
12
13
13
13
12
12
11
11
11
10
10
9
10
10
10
10
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
93
92
89
87
86
87
86
81
77
75
73
71
68
72
73
76
74
74
72
72
70
69
70

Pressure (mb)

996
995
994
994
993
992
992
991
991
991
991
991
991
991
992
992
993
993
994
995
996
998
999
1000

Ozone (du)

297
297
296
295
294
294
294
294
294
295
295
296
297
298
300
303
305
307
309
312
315
319
323
327

Wednesday 10

Waning Gibbous 57%

22:39

12:19

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

Sun - Rise: 08:11, Set: 15:47, Transit: 11:59. Moon - Rise: 22:39, Set: 12:19. Civil Dark: 16:29 - 07:29. Nautical Dark: 17:14 - 06:44. Astro Dark: 17:57 - 06:01

Total Clouds (% Sky Obscured)

95
90
85
77
63
46
25
42
60
72
79
80
81
77
74
75
77
77
87

Low Clouds (% Sky Obscured)

51
56
58
59
47
39
25
30
32
35
26
20
13
16
19
24
35
48
58

Medium Clouds (% Sky Obscured)

55
54
49
43
28
15
1
18
32
32
27
18
18
24
29
39
37
31
33

High Clouds (% Sky Obscured)

80
50
25
0
0
0
0
25
52
72
79
80
81
77
74
75
58
35
11

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

24
21
15
1
6
13
3
9
13
0
2
3
0
2
4
0
2
2
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)

20
19
18
17
16
16
16
16
15
15
15
14
13
13
12
12
13
13
14

Chance of Frost

Temperature (°C)

9
8
8
8
8
8
8
7
8
8
7
7
7
7
7
7
7
8
8

Feels Like (°C)

4
4
3
3
3
3
3
3
4
3
3
3
4
4
3
3
3
3
3

Dew Point (°C)

4
4
5
4
5
5
5
5
5
4
4
4
4
4
5
5
5
5
5

Relative Humidity (%)

73
75
78
79
82
82
82
84
81
79
77
79
82
84
85
85
87
84
82

Pressure (mb)

1001
1002
1003
1004
1004
1005
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1008
1007
1007

Ozone (du)

332
336
334
331
329
325
321
317
318
319
320
316
312
309
308
307
306
306
307

Forecast for Sheffield, Sheffield, United Kingdom (53.38,-1.47)

Generated: 04/12/25 17:00:40. Forecast: 04/12/25 to 10/12/25. Timezone: UTC+0.00