Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 9

Waning Gibbous 61%

01:33

08:02

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:27, Set: 17:55, Transit: 12:11. Moon - Rise: 01:33, Set: 08:02. Civil Dark: 18:28 - 05:53. Nautical Dark: 19:07 - 05:14. Astro Dark: 19:47 - 04:32

Total Clouds (% Sky Obscured)

95
98
99
100
92
89
83
88
81
17
43
56
43
59
64
62
71
63
70
73
79
85
97
97

Low Clouds (% Sky Obscured)

95
98
99
100
92
84
83
88
79
17
32
46
43
54
57
61
63
63
70
73
79
85
97
97

Medium Clouds (% Sky Obscured)

2
2
2
2
2
6
3
4
2
0
9
10
0
12
4
1
6
0
0
0
0
0
0
23

High 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
24

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
4
5
6
3
3
9
9
9
9
9
9
9
9
9
9

Fog (%)

100
100
100
96
19
0
0
0
0
0
0
0
0
0
0
0
0
0
9
100
100
72
6
3

Precipitation Type

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

Precipitation Probability (%)

1
0
0
0
0
0
0
9
37
47
54
61
67
52
51
3
2
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
94
90
81
75
71
67
64
67
70
79
87
90
91
95
95
95
95
96
96
98
98

Pressure (mb)

1020
1020
1020
1020
1020
1020
1019
1019
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016

Ozone (du)

361
363
365
367
369
370
372
373
375
376
378
378
377
376
377
377
379
382
385
388
387
383
385
391

Tuesday 10

Waning Gibbous 61%

02:39

08:30

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 OK
15 OK
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

Sun - Rise: 06:24, Set: 17:57, Transit: 12:10. Moon - Rise: 02:39, Set: 08:30. Civil Dark: 18:30 - 05:51. Nautical Dark: 19:09 - 05:12. Astro Dark: 19:49 - 04:30

Total Clouds (% Sky Obscured)

94
86
94
86
89
92
89
85
64
38
40
81
82
96
95
92
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

62
83
69
63
66
83
55
49
45
27
0
33
35
29
59
49
71
85
86
93
96
100
98
100

Medium Clouds (% Sky Obscured)

26
28
26
31
32
37
27
26
63
38
40
33
33
48
48
48
49
96
100
100
94
83
87
100

High Clouds (% Sky Obscured)

45
1
57
46
17
3
51
50
45
25
28
43
46
65
24
68
98
100
100
99
100
100
100
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
3
4
5

Fog (%)

1
1
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
Very Light Rain
Very Light Rain
None
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
1
2
4
0
0
0
0
2
33
58
72
66
95
95
95
74

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0
1.1
1.1
0.8
0.3

Wind Speed/Direction (mph)

7
5
5
6
7
9
11
12
13
14
13
13
14
14
13
14
15
16
17
17
18
18
17
17

Chance of Frost

Temperature (°C)

8
8
8
8
9
10
11
11
12
12
12
12
10
9
8
8
8
8
8
8
8
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
93
85
80
73
67
61
61
63
65
69
74
82
82
85
85
79
82
88
93
93
93

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1015
1014
1014
1013
1013
1012
1012
1012
1012
1011
1010
1010
1009
1008
1007
1006
1006

Ozone (du)

401
406
406
406
405
399
398
400
401
402
396
390
384
379
375
373
370
365
360
357
353
348
346
350

Wednesday 11

Third Quarter 52%

03:34

09:08

05 Bad
06 Bad
07 Bad
08 OK
09 Bad
10 Bad
11 Bad
12 OK
13 OK
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

Sun - Rise: 06:22, Set: 17:58, Transit: 12:10. Moon - Rise: 03:34, Set: 09:08. Civil Dark: 18:32 - 05:49. Nautical Dark: 19:11 - 05:10. Astro Dark: 19:51 - 04:27

Total Clouds (% Sky Obscured)

100
97
57
43
55
66
59
27
38
56
49
55
79
74
60
61
67
74
64
63
77
94
96
98

Low Clouds (% Sky Obscured)

70
54
44
43
54
54
48
27
36
49
25
41
4
0
9
15
35
28
20
35
49
57
51
46

Medium Clouds (% Sky Obscured)

89
55
54
3
7
4
0
0
3
0
0
0
0
0
0
61
67
66
64
35
3
31
14
53

High Clouds (% Sky Obscured)

100
94
55
0
3
0
0
0
0
0
3
0
62
74
60
61
48
61
49
36
58
75
83
92

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 (%)

36
11
0
0
1
2
0
0
2
3
3
14
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)

14
14
14
14
16
16
16
14
15
15
13
11
11
12
12
11
11
11
11
12
13
14
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
4
4
4
4
4
5
7
8
7
7
7
6
3
2
2
1
1
1
1
1
0
0

Dew Point (°C)

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

Relative Humidity (%)

95
88
85
87
80
74
72
69
61
59
60
61
64
70
77
78
76
75
78
78
78
80
82
83

Pressure (mb)

1006
1007
1008
1009
1011
1011
1012
1013
1013
1014
1014
1015
1015
1016
1017
1017
1018
1018
1017
1017
1017
1016
1016
1015

Ozone (du)

350
356
361
366
363
366
380
389
387
388
380
370
365
358
356
356
356
361
364
366
370
372
373
372

Thursday 12

Waning Crescent 42%

04:16

10:00

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:20, Set: 18:00, Transit: 12:10. Moon - Rise: 04:16, Set: 10:00. Civil Dark: 18:33 - 05:46. Nautical Dark: 19:13 - 05:07. Astro Dark: 19:53 - 04:25

Total Clouds (% Sky Obscured)

100
100
99
99
97
95
94
96
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

49
57
67
67
60
83
80
88
94
99
100
100
100
100
100
100
93
86
78
85
93
100
87
75

Medium Clouds (% Sky Obscured)

63
56
80
75
49
48
30
14
23
24
21
23
26
32
48
70
61
79
100
82
100
100
100
100

High Clouds (% Sky Obscured)

100
77
55
32
45
57
71
55
42
21
14
25
23
55
81
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
8
9
9
9
9
9
9
2
4
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
1
1
2
1
1
1
5
27
48
70
77
84
95
95
95
95
95
95
95
95
92

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.4
0.4
1
1.2
1.4
1.2
1.6
1.2
1
0.8
0.6

Wind Speed/Direction (mph)

16
17
18
19
20
21
21
22
24
24
24
24
23
23
23
23
23
22
19
17
17
17
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
84
82
78
74
74
75
83
84
87
87
88
91
91
91
91
90
88
88
90
85
78
76

Pressure (mb)

1014
1013
1013
1013
1012
1011
1010
1009
1008
1007
1006
1005
1004
1003
1002
1001
1000
999
998
997
997
997
997
997

Ozone (du)

370
370
370
367
365
364
360
358
357
355
354
354
354
357
360
360
361
362
367
377
380
386
390
392

Friday 13

Waning Crescent 32%

04:47

11:06

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 Good
18 Good
19 Good
20 Good
21 Good
22 OK
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:17, Set: 18:02, Transit: 12:10. Moon - Rise: 04:47, Set: 11:06. Civil Dark: 18:35 - 05:44. Nautical Dark: 19:14 - 05:05. Astro Dark: 19:55 - 04:22

Total Clouds (% Sky Obscured)

100
89
77
68
66
62
58
59
59
62
40
22
0
2
3
3
17
34
51
53
55
57
63
69

Low Clouds (% Sky Obscured)

60
58
59
62
58
56
54
48
42
36
24
12
0
0
0
0
17
34
51
53
55
57
63
67

Medium Clouds (% Sky Obscured)

100
80
60
55
55
50
50
57
59
62
40
22
0
1
2
3
14
24
36
23
12
1
1
0

High Clouds (% Sky Obscured)

100
72
43
15
2
15
15
15
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
4
9
0
9
9
9
9
9
6
5
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

76
66
48
34
32
4
0
3
20
25
42
37
4
3
1
0
0
0
2
6
9
10
9
5

Precipitation Amount (mm)

0.4
0.3
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
13
15
14
14
14
15
16
16
16
16
15
12
10
10
9
8
8
8
8
8
8
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
83
91
86
91
75
69
66
62
60
63
71
74
74
78
82
85
86
85
85
83
82
82
82

Pressure (mb)

997
997
998
998
999
999
999
999
998
998
999
999
1000
1001
1001
1002
1003
1003
1004
1004
1004
1005
1005
1006

Ozone (du)

395
401
407
410
419
431
448
461
477
485
491
502
510
517
517
516
515
506
497
488
480
473
465
457

Saturday 14

Waning Crescent 23%

No Rise

12:20

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:15, Set: 18:04, Transit: 12:09. Moon - Rise: No Rise, Set: 12:20. Civil Dark: 18:37 - 05:42. Nautical Dark: 19:16 - 05:03. Astro Dark: 19:57 - 04:20

Total Clouds (% Sky Obscured)

72
77
79
84
87
91
96
97
94
93
94
91
91
97
98
100
99
99
100
100
100
100
93
87

Low Clouds (% Sky Obscured)

62
52
43
32
32
32
33
40
47
53
59
65
71
80
90
100
95
98
100
95
90
84
88
87

Medium Clouds (% Sky Obscured)

0
7
9
14
8
9
10
24
36
56
65
65
62
57
53
41
26
24
23
23
20
17
13
7

High Clouds (% Sky Obscured)

0
11
23
33
52
73
96
92
85
80
60
39
24
23
26
22
13
7
1
19
31
46
34
20

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
7
6
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

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 (%)

1
3
4
0
2
2
3
14
21
25
28
28
28
27
21
18
19
19
23
29
36
35
34
29

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
9
10
11
12
13
13
14
14
14
14
13
13
13
14
15
16
17
18
19
16
14
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
82
79
79
78
72
68
63
62
60
60
63
69
74
77
81
84
85
87
88
88
88
90
85

Pressure (mb)

1007
1007
1008
1009
1010
1010
1010
1011
1010
1010
1010
1010
1010
1009
1009
1009
1008
1007
1007
1006
1006
1005
1005
1006

Ozone (du)

448
439
428
417
406
400
394
388
385
382
378
377
376
374
372
370
368
364
361
358
358
358
359
362

Sunday 15

Waning Crescent 15%

05:09

13:39

Sun - Rise: 06:13, Set: 18:05, Transit: 12:09. Moon - Rise: 05:09, Set: 13:39. Civil Dark: 18:39 - 05:40. Nautical Dark: 19:18 - 04:58. Astro Dark: 19:59 - 04:17

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 09/03/26 05:38:22. Forecast: 09/03/26 to 15/03/26. Timezone: UTC+0.00