Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 9

Waning Gibbous 67%

21:16

11:46

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: 07:57, Set: 15:50, Transit: 11:53. Moon - Rise: 21:16, Set: 11:46. Civil Dark: 16:30 - 07:17. Nautical Dark: 17:13 - 06:34. Astro Dark: 17:54 - 05:53

Total Clouds (% Sky Obscured)

99
100
97
100
92
100
96
80
93
75
78
96
90
100
100
98
100
60
68
71
68
58
75
69

Low Clouds (% Sky Obscured)

89
88
97
88
79
78
73
65
61
41
26
26
41
54
50
57
62
60
68
71
68
58
74
68

Medium Clouds (% Sky Obscured)

47
57
66
63
83
81
43
16
77
14
30
36
25
4
65
4
49
4
4
1
0
17
0
0

High Clouds (% Sky Obscured)

99
73
52
58
26
3
4
0
2
3
40
55
70
100
83
96
100
40
39
2
29
53
65
65

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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

4
8
74
25
34
34
22
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0.7
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)

15
15
16
17
21
22
22
20
17
16
16
15
14
14
14
13
13
13
13
13
13
13
13
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
79
77
84
84
84
82
80
79
79
81
84
84
84
85
87
88
88
88
88
90
90
87
85

Pressure (mb)

1002
1002
1001
1001
1001
1001
1001
1002
1003
1004
1006
1006
1007
1008
1008
1009
1009
1009
1010
1010
1011
1012
1013
1013

Ozone (du)

287
284
282
282
282
281
282
281
282
283
283
282
281
281
281
282
282
284
286
289
290
297
298
298

Wednesday 10

Waning Gibbous 57%

22:36

12:01

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
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: 07:58, Set: 15:50, Transit: 11:53. Moon - Rise: 22:36, Set: 12:01. Civil Dark: 16:30 - 07:18. Nautical Dark: 17:13 - 06:34. Astro Dark: 17:54 - 05:54

Total Clouds (% Sky Obscured)

59
50
51
46
53
37
36
45
96
72
82
100
100
99
98
66
69
72
93
72
59
82
72
78

Low Clouds (% Sky Obscured)

59
50
51
46
53
37
36
45
45
39
33
36
34
38
36
38
48
56
69
65
59
74
70
77

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
5
41
23
15
100
100
53
94
66
69
52
32
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
0
4
45
100
100
38
43
50
50
50
40
35
2
46
6
19

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
1
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)

15
15
14
14
14
12
12
12
10
10
9
10
10
10
10
10
10
10
10
10
9
9
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
80
79
79
80
83
85
87
88
91
91
91
90
88
87
88
90
93
93
93
94
93
94
90

Pressure (mb)

1014
1014
1015
1015
1016
1017
1018
1018
1019
1020
1020
1021
1021
1021
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019

Ozone (du)

301
303
311
320
317
315
314
314
314
311
309
305
305
305
303
303
302
302
303
301
301
301
300
299

Thursday 11

Third Quarter 46%

23:52

12:12

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: 07:59, Set: 15:50, Transit: 11:54. Moon - Rise: 23:52, Set: 12:12. Civil Dark: 16:30 - 07:19. Nautical Dark: 17:13 - 06:35. Astro Dark: 17:54 - 05:54

Total Clouds (% Sky Obscured)

92
81
81
57
68
70
52
70
70
62
100
100
100
100
100
100
100
92
95
96
98
99
100
100

Low Clouds (% Sky Obscured)

78
81
81
57
68
49
52
50
70
62
78
72
82
86
99
84
87
82
88
87
87
88
86
83

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
3
4
7
11
81
84
79
62
67
32
75
48
82
95

High Clouds (% Sky Obscured)

62
29
48
0
32
45
15
55
55
62
100
100
100
100
100
100
100
46
30
24
29
45
69
76

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
1
0
3
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
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
6
54
31
21
4
4
18
3
17
32

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
10
10
10
10
9
9
9
8
8
8
8
9
9
9
9
9
9
9
9
9
9
9
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
85
81
80
81
88
91
91
91
93
93
95
95
96
96
96
98
98
98
98
88
88
87
82

Pressure (mb)

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

Ozone (du)

296
294
291
290
289
289
294
298
302
305
305
304
304
303
302
302
303
303
305
306
307
308
309
310

Friday 12

Waning Crescent 36%

01:05

12:23

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
09 Good
10 Good

Sun - Rise: 08:00, Set: 15:50, Transit: 11:54. Moon - Rise: 01:05, Set: 12:23. Civil Dark: 16:30 - 07:20. Nautical Dark: 17:13 - 06:36. Astro Dark: 17:54 - 05:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
95
99
84
88
87
72
52
52
25
23
22
19
17
11
7

Low Clouds (% Sky Obscured)

80
82
85
89
83
70
47
37
23
8
5
3
0
0
0
0
9
16
23
22
19
16
10
5

Medium Clouds (% Sky Obscured)

90
73
87
79
78
99
100
73
68
50
27
52
46
70
63
52
52
6
0
0
0
0
0
0

High Clouds (% Sky Obscured)

90
100
98
98
100
100
100
100
100
95
99
81
82
47
32
2
2
0
0
0
0
0
0
1

ISS Passover

Visibility (miles)

9
9
6
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

26
34
43
45
51
59
57
49
32
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
84
88
87
85
87
90
90
85
85
87
87
90
90
91
91
91
93
93
93
94
93
94
88

Pressure (mb)

1015
1015
1015
1016
1016
1017
1018
1018
1019
1020
1021
1021
1022
1022
1023
1023
1024
1024
1024
1025
1025
1026
1026
1027

Ozone (du)

312
312
313
315
317
320
324
326
328
330
329
327
332
336
344
352
368
379
373
367
363
359
357
355

Saturday 13

Waning Crescent 27%

02:17

12:32

11 OK
12 Good
13 Good
14 Good
15 OK
16 OK
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: 08:01, Set: 15:50, Transit: 11:55. Moon - Rise: 02:17, Set: 12:32. Civil Dark: 16:30 - 07:20. Nautical Dark: 17:14 - 06:37. Astro Dark: 17:55 - 05:56

Total Clouds (% Sky Obscured)

23
10
11
18
30
36
43
44
44
48
55
69
83
86
89
91
83
75
68
67
65
63
59
56

Low Clouds (% Sky Obscured)

0
0
0
0
12
25
37
38
38
38
46
53
61
56
51
46
52
58
64
61
57
54
54
55

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
1
1
0
0
0

High Clouds (% Sky Obscured)

15
7
10
13
10
15
15
15
20
25
42
50
61
66
72
76
59
39
25
31
50
55
38
29

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
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
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
78
78
75
78
84
90
91
91
91
90
90
93
91
93
93
93
93
93
93
91
91
90
85

Pressure (mb)

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

Ozone (du)

352
349
342
338
334
332
329
324
323
322
321
319
316
312
309
307
304
305
305
306
304
302
300
299

Sunday 14

Waning Crescent 19%

03:29

12:43

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: 08:02, Set: 15:50, Transit: 11:55. Moon - Rise: 03:29, Set: 12:43. Civil Dark: 16:30 - 07:21. Nautical Dark: 17:14 - 06:38. Astro Dark: 17:55 - 05:57

Total Clouds (% Sky Obscured)

54
64
73
82
80
78
67
66
73
63
62
61
70
71
73
74
72
71
69
66
74
69
78
82

Low Clouds (% Sky Obscured)

54
64
73
82
80
78
67
65
73
63
62
61
70
71
73
74
72
71
69
66
74
69
78
77

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
2
2
10
28
54
65
53
39
21
13
6
0
0
0

High Clouds (% Sky Obscured)

17
10
6
2
1
0
0
0
0
0
27
53
70
60
40
22
16
9
5
6
7
6
19
33

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
3
4
5
6
6
5
21
31
39
40
33
9
6
4
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
2
6
6
7
7
7
7
6
6
6
6
6
6
5
5
5
6
6
6
6
7
7
6

Dew Point (°C)

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

Relative Humidity (%)

79
75
75
77
80
82
87
90
88
87
85
88
90
93
94
94
94
95
95
93
95
93
93
90

Pressure (mb)

1023
1022
1022
1021
1021
1020
1020
1019
1019
1019
1018
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

298
297
297
297
297
299
300
302
304
307
309
314
319
323
323
322
322
326
330
334
334
334
334
330

Monday 15

Waning Crescent 12%

04:42

12:56

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

Sun - Rise: 08:02, Set: 15:50, Transit: 11:56. Moon - Rise: 04:42, Set: 12:56. Civil Dark: 16:31 - 07:22. Nautical Dark: 17:14 - 06:38. Astro Dark: 17:55 - 05:57

Total Clouds (% Sky Obscured)

87
86
85
84
89
94
97
98
99
100
100
100
100
100
99
99
96
93
91

Low Clouds (% Sky Obscured)

79
80
80
84
81
78
75
69
69
70
56
46
37
47
65
77
69
71
69

Medium Clouds (% Sky Obscured)

0
0
0
0
11
18
23
28
32
26
11
10
10
13
16
17
27
41
53

High Clouds (% Sky Obscured)

46
49
50
50
60
72
84
89
95
100
100
100
100
94
88
78
56
33
25

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 (%)

0
3
2
1
2
1
0
2
2
0
1
2
0
0
0
0
6
18
46

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
86
87
88
91
93
93
96
95
96
96
95
93
93
91
93
93
93
91

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014
1014
1014
1013
1013

Ozone (du)

326
322
319
316
313
309
305
301
300
299
298
299
299
299
299
299
299
302
305

Forecast for Welwyn Garden City, Hertfordshire, United Kingdom (51.80,-0.21)

Generated: 09/12/25 11:59:37. Forecast: 09/12/25 to 15/12/25. Timezone: UTC+0.00