Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 12

Waning Crescent 17%

05:41

12:15

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: 07:17, Set: 17:10, Transit: 12:14. Moon - Rise: 05:41, Set: 12:15. Civil Dark: 17:45 - 06:42. Nautical Dark: 18:24 - 06:03. Astro Dark: 19:03 - 05:24

Total Clouds (% Sky Obscured)

88
90
93
92
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

81
76
72
74
92
82
96
96
87
94
100
100
100
100
100
100
100
100
97
100
100
100
93
94

Medium Clouds (% Sky Obscured)

49
16
13
23
30
30
36
100
100
100
100
93
97
95
18
16
16
18
19
20
31
45
38
38

High Clouds (% Sky Obscured)

88
18
48
71
91
84
100
100
65
86
85
56
53
45
2
3
0
3
4
19
20
12
2
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
7
9
9
9
9
9
8
8
0
0
0

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
4
1
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

51
30
1
10
4
6
13
8
9
12
9
27
47
57
43
22
24
32
39
29
35
56
61
63

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

6
5
5
5
1
2
3
4
4
4
5
6
6
7
8
8
9
10
10
10
11
12
13
14

Chance of Frost

Temperature (°C)

6
6
6
5
5
5
5
5
5
5
5
4
4
4
4
4
4
5
5
6
6
6
5
4

Feels Like (°C)

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

Dew Point (°C)

5
5
5
4
4
4
4
4
4
4
4
4
4
4
3
3
3
4
4
4
5
5
5
4

Relative Humidity (%)

91
91
93
93
93
93
93
93
94
94
96
96
96
98
94
93
93
94
91
91
93
94
96
94

Pressure (mb)

988
989
989
990
990
991
990
990
990
990
990
990
989
989
989
990
990
991
991
991
992
992
993
994

Ozone (du)

427
431
437
437
436
441
441
440
438
437
432
433
433
431
430
432
431
427
424
420
420
420
428
435

Friday 13

Waning Crescent 10%

06:19

13:25

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

Sun - Rise: 07:15, Set: 17:12, Transit: 12:14. Moon - Rise: 06:19, Set: 13:25. Civil Dark: 17:46 - 06:41. Nautical Dark: 18:26 - 06:01. Astro Dark: 19:05 - 05:22

Total Clouds (% Sky Obscured)

100
100
100
88
90
94
79
60
40
33
43
44
48
41
42
46
32
36
49
54
39
36
63
100

Low Clouds (% Sky Obscured)

87
84
59
61
76
73
61
54
16
33
43
44
48
41
42
46
32
36
49
54
39
36
63
9

Medium Clouds (% Sky Obscured)

41
100
100
88
79
64
60
42
20
3
0
0
0
0
0
0
0
0
0
0
0
0
0
19

High Clouds (% Sky Obscured)

3
3
2
2
6
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
3
8
24
100

ISS Passover

Visibility (miles)

0
0
0
0
0
0
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 (%)

50
41
31
28
26
5
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
14
15
15
15
14
13
13
12
12
12
12
11
11
10
10
11
11
11
10
10
8
7
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
94
94
96
96
86
84
86
84
86
86
87
87
87
87
81
74
70
66
61
61
61
68

Pressure (mb)

996
997
999
1001
1002
1003
1005
1006
1007
1008
1009
1010
1011
1013
1014
1015
1016
1017
1017
1017
1018
1018
1018
1018

Ozone (du)

437
440
442
447
449
452
452
459
459
462
464
462
464
462
459
460
453
443
434
428
422
416
413
408

Saturday 14

Waning Crescent 5%

06:46

14:43

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: 07:13, Set: 17:14, Transit: 12:14. Moon - Rise: 06:46, Set: 14:43. Civil Dark: 17:48 - 06:39. Nautical Dark: 18:28 - 06:00. Astro Dark: 19:06 - 05:21

Total Clouds (% Sky Obscured)

100
100
100
100
95
94
93
86
99
92
99
100
100
99
99
98
99
99
100
94
90
85
90
96

Low Clouds (% Sky Obscured)

16
0
0
0
0
5
0
0
24
30
40
57
92
94
95
97
98
99
100
92
84
76
79
80

Medium Clouds (% Sky Obscured)

88
100
100
100
95
89
93
86
95
92
99
100
100
97
93
87
26
15
40
11
33
51
45
85

High Clouds (% Sky Obscured)

100
100
100
75
55
70
40
50
97
50
40
100
93
61
25
0
0
0
0
1
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
7
4
4
0
0
0
2
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
Snow
Snow
Snow
None
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
6
22
52
64
62
51
63
63
50
36
16
11
6
1
20
29

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

3
3
2
3
4
5
6
7
8
10
11
12
13
15
16
17
17
18
15
13
11
9
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
73
74
71
71
73
71
70
66
65
81
91
93
96
96
96
94
89
88
91
94
96
93
88

Pressure (mb)

1018
1019
1019
1019
1018
1018
1017
1016
1016
1014
1014
1013
1012
1010
1009
1008
1007
1006
1006
1005
1004
1003
1002
1002

Ozone (du)

403
402
397
391
388
382
380
378
376
365
362
364
361
360
361
359
357
355
353
356
354
355
360
362

Sunday 15

Waning Crescent 1%

07:06

16:04

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: 07:11, Set: 17:15, Transit: 12:14. Moon - Rise: 07:06, Set: 16:04. Civil Dark: 17:50 - 06:37. Nautical Dark: 18:29 - 05:58. Astro Dark: 19:08 - 05:19

Total Clouds (% Sky Obscured)

100
96
91
87
81
66
59
69
70
67
54
58
64
75
78
87
100
87
100
90
79
71
71
70

Low Clouds (% Sky Obscured)

79
65
75
74
67
57
48
60
63
64
54
54
60
61
58
53
51
54
63
60
57
56
57
61

Medium Clouds (% Sky Obscured)

100
77
57
55
65
52
34
36
0
0
6
11
16
27
32
38
100
70
100
90
76
24
15
8

High Clouds (% Sky Obscured)

0
2
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
3
7
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

36
45
51
62
62
49
38
37
22
2
1
0
0
3
4
4
6
16
23
35
31
26
22
20

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

6
6
6
8
9
9
9
11
11
12
11
10
11
11
11
12
13
14
16
18
17
18
19
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
91
94
96
93
96
98
96
91
86
86
89
91
93
91
89
85
82
79
74
82
78
71
70

Pressure (mb)

1002
1001
1001
1000
1000
1000
999
999
998
998
998
998
998
998
998
998
998
998
998
998
998
998
999
999

Ozone (du)

365
363
367
373
365
367
371
378
383
384
387
388
392
395
399
404
409
410
410
408
406
408
411
411

Monday 16

Waning Crescent 0%

07:21

No Set

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

Sun - Rise: 07:09, Set: 17:17, Transit: 12:14. Moon - Rise: 07:21, Set: No Set. Civil Dark: 17:52 - 06:35. Nautical Dark: 18:31 - 05:56. Astro Dark: 19:10 - 05:17

Total Clouds (% Sky Obscured)

60
50
39
31
33
32
31
35
39
45
51
59
70
67
64
60
52
44
38
23
12
0
8
15

Low Clouds (% Sky Obscured)

60
50
39
31
30
28
27
31
35
39
48
57
66
62
57
53
47
41
35
23
12
0
5
10

Medium Clouds (% Sky Obscured)

2
7
1
0
0
0
0
0
0
0
11
20
30
43
58
60
52
44
38
23
12
0
8
15

High Clouds (% Sky Obscured)

0
0
0
1
18
25
20
14
9
4
10
13
22
27
48
55
50
44
38
23
12
0
8
15

ISS Passover

Visibility (miles)

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

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
Light Rain
Light Rain

Precipitation Probability (%)

16
13
8
0
0
0
0
0
0
0
1
1
0
1
0
0
0
1
1
30
43
53
84
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
0.5
0.8

Wind Speed/Direction (mph)

17
17
16
17
16
16
16
14
14
13
13
12
12
11
11
11
11
11
12
12
12
11
11
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
3
1
2
1
1
1
1
1
1
1
1
1
2
2
2
2
3
4
4
4

Relative Humidity (%)

74
79
82
83
85
78
83
85
85
85
85
88
88
91
91
89
89
86
82
78
81
86
90
91

Pressure (mb)

1000
1001
1002
1003
1004
1005
1006
1006
1007
1007
1008
1008
1009
1009
1010
1010
1011
1011
1011
1011
1011
1010
1010
1010

Ozone (du)

409
406
396
390
381
376
374
369
364
358
353
348
344
339
336
333
330
328
326
324
323
323
322
324

Tuesday 17

New Moon 1%

07:33

17:25

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: 07:07, Set: 17:19, Transit: 12:14. Moon - Rise: 07:33, Set: 17:25. Civil Dark: 17:53 - 06:33. Nautical Dark: 18:33 - 05:54. Astro Dark: 19:11 - 05:15

Total Clouds (% Sky Obscured)

31
54
74
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
97
98
96

Low Clouds (% Sky Obscured)

25
25
15
15
15
15
10
0
0
0
0
0
0
11
22
32
55
78
99
94
89
85
89
93

Medium Clouds (% Sky Obscured)

31
54
74
100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
97
90
85
82
73
54

High Clouds (% Sky Obscured)

18
42
71
100
100
100
100
100
100
100
91
81
73
83
93
100
96
90
85
78
72
70
73
65

ISS Passover

Visibility (miles)

4
4
6
7
9
9
9
9
6
4
2
1
1
0
3
6
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
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Snow
Snow
Snow
None
None
None
Very Light Rain
Very Light Rain
None

Precipitation Probability (%)

95
95
78
40
39
39
40
73
95
95
95
95
95
95
95
93
80
60
30
44
53
59
53
44

Precipitation Amount (mm)

1.2
0.8
0.5
0
0
0
0
0.3
0.9
1.6
1.3
1.8
1.6
1
0.8
0.8
0.6
0.3
0
0
0
0.3
0.2
0

Wind Speed/Direction (mph)

8
7
6
7
6
6
5
5
5
6
7
8
10
11
12
12
14
14
14
14
14
14
14
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
96
96
94
94
94
94
94
96
96
96
96
96
96
96
93
93
86
82
75
73
72
69
75

Pressure (mb)

1010
1010
1009
1009
1008
1008
1007
1007
1007
1006
1006
1006
1006
1007
1007
1008
1009
1010
1010
1010
1010
1011
1011
1011

Ozone (du)

326
328
330
332
334
339
344
349
352
354
356
362
368
374
377
380
383
385
387
389
388
387
386
377

Wednesday 18

Waxing Crescent 5%

07:45

18:46

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: 07:05, Set: 17:21, Transit: 12:14. Moon - Rise: 07:45, Set: 18:46. Civil Dark: 17:55 - 06:31. Nautical Dark: 18:34 - 05:52. Astro Dark: 19:13 - 05:13

Total Clouds (% Sky Obscured)

91
94
97
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

91
84
80
76
68
65
62
63
73
74
66
66
63

Medium Clouds (% Sky Obscured)

35
35
35
25
31
51
72
80
87
93
96
98
100

High Clouds (% Sky Obscured)

61
74
87
100
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

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

30
27
24
20
37
47
53
57
61
58
63
64
66

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0.2
0
0.2
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

3
2
2
2
2
2
2
2
2
2
2
2
2

Feels Like (°C)

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

Dew Point (°C)

-1
-0
-0
-0
-0
-0
-0
-0
0
0
0
0
-0

Relative Humidity (%)

79
83
83
85
86
86
85
85
86
86
86
86
83

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011

Ozone (du)

368
359
357
355
353
356
359
362
362
361
361
360
360

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

Generated: 12/02/26 17:42:53. Forecast: 12/02/26 to 18/02/26. Timezone: UTC+0.00