Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 1

Waning Gibbous 74%

20:49

13:02

13 OK
14 OK
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
11 Bad
12 Bad

Sun - Rise: 06:15, Set: 19:47, Transit: 13:00. Moon - Rise: 20:49, Set: 13:02. Civil Dark: 20:22 - 05:40. Nautical Dark: 21:05 - 04:57. Astro Dark: 21:53 - 04:10

Total Clouds (% Sky Obscured)

31
36
67
100
100
99
100
100
100
100
100
100
91
92
88
94
91
92
95
100
100
100
96
83

Low Clouds (% Sky Obscured)

31
20
48
9
29
19
0
0
0
0
0
3
5
17
7
13
14
10
15
21
38
80
74
48

Medium Clouds (% Sky Obscured)

4
8
20
15
21
26
59
85
69
80
99
88
29
31
77
46
73
90
79
100
83
81
77
80

High Clouds (% Sky Obscured)

2
11
3
100
100
88
100
100
100
100
100
99
75
53
52
58
47
48
66
100
100
88
9
34

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
0
14
28
28
32

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)

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

Chance of Frost

Temperature (°C)

21
21
21
21
21
21
20
19
18
17
16
16
15
15
15
14
14
14
14
15
16
17
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

45
45
47
43
40
45
52
58
60
64
69
73
78
79
82
83
83
82
78
73
68
63
66
60

Pressure (mb)

1020
1020
1020
1020
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1020
1020
1020
1020
1020
1020

Ozone (du)

321
318
318
317
318
319
318
319
323
322
322
321
317
315
312
310
308
306
305
304
303
302
301
299

Wednesday 2

Waning Gibbous 63%

21:11

13:02

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
11 Bad
12 Bad

Sun - Rise: 06:17, Set: 19:45, Transit: 13:00. Moon - Rise: 21:11, Set: 13:02. Civil Dark: 20:20 - 05:42. Nautical Dark: 21:02 - 04:59. Astro Dark: 21:50 - 04:13

Total Clouds (% Sky Obscured)

99
88
100
97
100
100
94
94
77
75
97
79
87
94
97
97
100
100
100
100
100
100
100
97

Low Clouds (% Sky Obscured)

94
77
100
79
93
37
72
53
77
75
59
39
48
65
67
69
93
93
95
92
91
83
79
79

Medium Clouds (% Sky Obscured)

39
34
99
9
20
100
25
25
3
0
0
2
15
20
16
18
54
12
75
78
19
16
25
19

High Clouds (% Sky Obscured)

28
46
100
91
64
84
30
84
27
20
91
36
35
63
79
40
100
100
81
97
100
100
100
83

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 (%)

37
47
72
16
1
8
0
0
0
2
8
0
1
0
0
0
0
13
14
11
10
2
12
16

Precipitation Amount (mm)

0
0
0.4
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
10
10
9
12
11
12
10
10
10
9
9
10
10
10
10
10
10
10
10
10
12
12
15

Chance of Frost

Temperature (°C)

18
18
18
18
18
18
18
18
18
17
17
17
17
17
17
17
17
17
17
18
18
20
21
22

Feels Like (°C)

16
15
15
16
15
15
16
15
16
15
16
15
16
15
15
15
15
15
16
16
17
18
20
20

Dew Point (°C)

7
8
8
10
9
11
12
13
14
14
15
15
16
16
16
16
16
15
16
16
17
18
18
18

Relative Humidity (%)

50
52
53
59
56
61
66
72
78
81
85
88
92
93
93
93
93
89
89
89
89
88
82
75

Pressure (mb)

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

Ozone (du)

297
297
296
295
295
295
294
295
295
295
295
295
295
295
293
292
291
290
289
289
288
288
288
288

Thursday 3

Waning Gibbous 51%

21:43

14:28

13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 OK
21 OK
22 OK
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

Sun - Rise: 06:18, Set: 19:42, Transit: 12:59. Moon - Rise: 21:43, Set: 14:28. Civil Dark: 20:17 - 05:44. Nautical Dark: 21:00 - 05:01. Astro Dark: 21:47 - 04:15

Total Clouds (% Sky Obscured)

99
97
73
77
90
63
87
40
45
40
52
81
93
94
64
78
89
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

38
70
12
6
0
6
17
8
27
31
48
78
86
90
51
50
61
91
78
74
65
73
78
85

Medium Clouds (% Sky Obscured)

38
66
11
15
13
11
9
9
14
8
14
5
11
16
16
23
28
69
94
96
95
97
98
98

High Clouds (% Sky Obscured)

96
69
40
77
54
12
15
0
0
1
0
6
37
47
33
70
67
62
60
63
64
99
99
98

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
6
8
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
Very Light Rain
Very Light Rain

Precipitation Probability (%)

9
12
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
19
19
24
29
52
58
65

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
0.2
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
23
23
24
23
23
22
21
20
19
19
19
19
19
19
19
19
19
19
20
20
20
20
20

Feels Like (°C)

20
21
21
20
20
20
19
18
19
19
18
19
17
17
17
18
18
18
17
18
17
18
18
19

Dew Point (°C)

18
17
16
13
12
12
13
13
13
14
15
17
17
17
16
17
17
17
17
17
17
16
18
18

Relative Humidity (%)

72
65
64
50
48
50
56
63
67
72
76
86
88
86
82
85
88
89
86
85
81
77
85
89

Pressure (mb)

1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1015
1015
1014
1013
1013
1013
1013
1013
1013
1012
1012
1013

Ozone (du)

289
288
286
286
285
286
286
286
286
286
286
287
287
287
289
289
289
289
290
290
290
290
290
291

Friday 4

Third Quarter 39%

22:30

15:48

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

Sun - Rise: 06:20, Set: 19:40, Transit: 12:59. Moon - Rise: 22:30, Set: 15:48. Civil Dark: 20:15 - 05:45. Nautical Dark: 20:57 - 05:03. Astro Dark: 21:44 - 04:17

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
83
63
40
21
24
24
20
16
11
7
6
40
57
78
100
68
56
67

Low Clouds (% Sky Obscured)

82
47
75
75
73
70
19
15
10
12
15
17
16
13
9
5
2
0
4
8
14
15
16
17

Medium Clouds (% Sky Obscured)

99
100
100
100
100
100
83
3
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

97
96
95
97
98
100
72
43
24
0
0
0
0
0
0
0
4
40
57
78
100
58
46
48

ISS Passover

Visibility (miles)

5
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
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 (%)

79
67
47
45
25
12
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.4
0.2
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
11
12
12
11
11
11
10
9
9
9
8
8
7
8
7
6
6
5
6
7
8
8
7

Chance of Frost

Temperature (°C)

20
20
20
20
19
19
18
17
16
15
15
14
13
13
12
12
11
11
11
12
14
15
17
18

Feels Like (°C)

18
19
18
18
18
17
16
14
13
12
14
13
12
12
11
11
10
10
8
10
11
13
15
16

Dew Point (°C)

18
18
16
15
15
15
13
11
9
9
10
10
10
9
8
8
8
8
8
9
8
8
7
6

Relative Humidity (%)

88
88
76
76
77
77
72
65
63
68
74
76
80
80
77
79
80
83
81
77
69
59
52
47

Pressure (mb)

1013
1013
1013
1013
1013
1014
1014
1015
1016
1017
1018
1018
1019
1019
1020
1021
1022
1022
1023
1024
1025
1025
1025
1026

Ozone (du)

293
294
297
299
302
305
314
321
329
335
338
339
336
330
326
324
324
321
318
314
312
309
307
304

Saturday 5

Waning Crescent 28%

23:36

16:53

13 OK
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 OK
04 OK
05 OK
06 OK
07 OK
08 Good
09 Good
10 Good
11 Good
12 Good

Sun - Rise: 06:21, Set: 19:38, Transit: 12:59. Moon - Rise: 23:36, Set: 16:53. Civil Dark: 20:12 - 05:47. Nautical Dark: 20:55 - 05:05. Astro Dark: 21:41 - 04:20

Total Clouds (% Sky Obscured)

38
32
45
76
79
80
76
78
78
77
77
77
65
52
38
37
33
25
20
16
13
13
13
14

Low Clouds (% Sky Obscured)

17
17
15
14
12
10
8
7
7
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
8
10
13
15
15
17
17
23
22
18
10
8
7
5
5
5

High Clouds (% Sky Obscured)

24
17
20
36
37
46
35
27
20
36
46
59
45
31
13
8
5
4
2
2
1
2
2
3

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
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)

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

Chance of Frost

Temperature (°C)

19
19
20
20
20
19
19
18
17
16
15
14
13
13
13
12
12
12
12
14
16
18
20
22

Feels Like (°C)

16
17
18
18
17
16
17
15
14
13
13
12
12
12
12
12
12
12
11
13
15
15
17
18

Dew Point (°C)

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

Relative Humidity (%)

43
39
38
37
37
41
47
50
53
58
63
66
66
68
70
71
70
70
70
61
54
48
42
37

Pressure (mb)

1026
1026
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1025
1025
1025
1024
1024
1024
1024
1024
1024
1023
1022

Ozone (du)

304
304
303
301
300
299
298
297
297
296
296
294
293
292
290
288
288
287
287
287
287
287
286
286

Sunday 6

Waning Crescent 18%

00:58

17:40

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

Sun - Rise: 06:23, Set: 19:36, Transit: 12:58. Moon - Rise: 00:58, Set: 17:40. Civil Dark: 20:10 - 05:49. Nautical Dark: 20:52 - 05:07. Astro Dark: 21:38 - 04:22

Total Clouds (% Sky Obscured)

35
55
75
84
92
100
100
100
100
93
87
80
62
47
31
33
35
32
47
62
75
67
60
52

Low Clouds (% Sky Obscured)

0
0
0
1
1
2
14
26
38
37
35
34
23
11
0
2
5
7
5
6
3
2
1
0

Medium Clouds (% Sky Obscured)

6
7
8
39
69
100
98
97
96
89
82
75
51
28
5
7
8
6
9
11
9
8
7
6

High Clouds (% Sky Obscured)

28
51
75
84
92
99
100
100
100
74
51
36
24
15
0
4
7
11
31
51
72
62
55
47

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

Precipitation Probability (%)

0
0
0
0
0
0
3
12
18
24
23
21
49
57
51
35
16
1
1
1
0
3
3
0

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

24
24
24
25
24
23
22
21
20
19
19
18
18
17
17
16
16
16
16
17
18
19
20
22

Feels Like (°C)

19
24
23
23
22
22
22
19
18
17
18
18
18
15
15
15
15
15
15
15
15
15
16
16

Dew Point (°C)

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

Relative Humidity (%)

34
33
34
33
34
34
35
35
36
35
39
42
45
49
53
58
61
63
66
65
65
64
59
53

Pressure (mb)

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

Ozone (du)

285
286
286
287
287
287
287
288
289
290
291
291
292
293
294
295
296
297
298
299
299
300
300
300

Monday 7

Waning Crescent 10%

02:28

18:12

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

Sun - Rise: 06:25, Set: 19:33, Transit: 12:58. Moon - Rise: 02:28, Set: 18:12. Civil Dark: 20:08 - 05:50. Nautical Dark: 20:49 - 05:09. Astro Dark: 21:35 - 04:24

Total Clouds (% Sky Obscured)

70
86
100
99
98
96
89
86
79
78
79
78
77
77
77
81
88
92

Low Clouds (% Sky Obscured)

1
2
3
6
8
10
10
11
10
12
16
19
19
19
36
34
32
30

Medium Clouds (% Sky Obscured)

13
20
24
49
73
96
72
46
19
13
7
1
3
4
4
7
9
11

High Clouds (% Sky Obscured)

67
85
100
76
52
33
48
46
41
49
57
50
25
20
15
15
15
15

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

2
0
0
0
0
0
0
0
0
20
37
49
47
35
0
10
24
32

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
23
23
23
22
21
20
19
18
17
16
16
15
14
14
13
12
12

Feels Like (°C)

16
23
22
21
21
21
21
17
18
18
18
17
18
13
12
12
12
12

Dew Point (°C)

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

Relative Humidity (%)

48
48
46
45
50
54
59
63
67
72
75
78
83
83
82
83
83
83

Pressure (mb)

1016
1015
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

300
300
301
301
300
300
299
297
296
294
292
290
289
288
287
285
285
284

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

Generated: 01/09/26 13:11:13. Forecast: 01/09/26 to 07/09/26. Timezone: UTC+1.00