Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 3

Waning Gibbous 51%

21:43

14:28

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: 06:18, 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)

79
83
89
100
100
97
95
93
71
97
50
98
96
55
100
100
100
99
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

35
15
20
31
35
28
35
31
35
45
38
62
59
46
96
83
92
90
96
93
27
23
44
56

Medium Clouds (% Sky Obscured)

41
83
17
16
4
0
2
0
12
16
17
20
22
20
34
16
42
37
90
100
95
99
99
100

High Clouds (% Sky Obscured)

70
66
70
98
100
93
94
82
51
90
43
96
55
48
95
100
100
79
78
60
100
90
76
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
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
Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
1
0
1
3
6
2
0
0
0
0
1
4
9
43
64
76
80
40
25
11
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

22
24
24
24
23
23
22
20
20
19
18
19
18
18
19
19
20
20
20
20
19
18
18
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
50
48
48
47
53
58
64
68
71
77
75
80
82
92
84
81
82
82
84
81
73
60
56

Pressure (mb)

1017
1016
1016
1016
1016
1016
1015
1016
1016
1015
1015
1015
1014
1013
1012
1011
1011
1010
1010
1011
1012
1013
1013
1013

Ozone (du)

293
293
293
293
294
293
291
291
291
290
289
290
290
290
289
291
292
292
293
294
296
298
298
298

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 Good
22 Good
23 Good
00 Good
01 OK
02 Bad
03 Bad
04 Bad
05 OK
06 Bad
07 OK
08 Bad
09 Bad
10 Bad
11 OK
12 OK

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
100
100
2
0
0
2
35
100
96
95
43
75
25
79
75
61
46
44

Low Clouds (% Sky Obscured)

31
34
27
27
23
3
0
0
0
0
0
0
0
3
9
11
6
6
4
5
12
16
21
18

Medium Clouds (% Sky Obscured)

100
98
100
97
94
65
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2

High Clouds (% Sky Obscured)

100
97
98
100
100
100
100
100
1
0
0
1
30
100
96
86
15
48
8
51
46
42
44
32

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 (%)

1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
14
14
14
14
14
13
13
12
13
12
12
11
9
9
10
10
10
9
12
12
13
15
17

Dew Point (°C)

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

Relative Humidity (%)

50
42
36
35
36
40
45
50
57
62
64
68
71
74
77
81
84
89
90
80
66
56
49
44

Pressure (mb)

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

Ozone (du)

297
299
299
300
304
306
308
313
318
322
321
320
317
314
311
309
307
304
302
300
298
298
297
296

Saturday 5

Waning Crescent 28%

23:36

16:53

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

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)

39
38
68
61
36
56
23
51
44
8
5
35
3
2
4
30
21
39
39
41
40
49
62
71

Low Clouds (% Sky Obscured)

26
27
29
20
22
28
12
17
3
3
0
0
0
0
0
0
0
0
0
0
0
30
4
41

Medium Clouds (% Sky Obscured)

0
0
0
0
4
8
8
8
7
4
3
18
0
0
0
0
0
11
9
41
40
49
62
71

High Clouds (% Sky Obscured)

11
5
28
28
5
11
1
3
4
1
0
0
3
1
2
30
21
26
36
40
40
38
39
18

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
1
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)

8
8
8
7
6
5
3
2
3
2
3
2
3
3
4
3
4
4
5
6
8
10
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

40
38
36
36
36
36
44
46
48
50
52
55
59
64
68
70
71
71
71
69
64
54
51
40

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1024
1024
1024
1024
1023
1023
1023
1022
1022
1022
1021
1021
1020

Ozone (du)

294
292
289
288
288
288
287
287
287
287
288
291
291
290
290
291
290
289
288
288
288
288
287
288

Sunday 6

Waning Crescent 18%

00:58

17:40

13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Good
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK
07 Bad
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)

80
90
97
96
87
100
100
100
100
75
51
11
19
27
32
33
35
42
51
88
95
93
90
90

Low Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
6
11
15
20
23
25
25
27
29
31
59
84

Medium Clouds (% Sky Obscured)

80
90
90
85
20
8
10
53
91
75
51
4
6
9
10
9
4
0
7
12
11
8
3
1

High Clouds (% Sky Obscured)

55
71
85
82
87
100
100
100
100
75
33
9
6
3
0
1
1
4
17
75
82
74
64
59

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
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 (%)

2
5
7
7
9
17
16
24
28
19
16
4
1
0
0
0
3
2
4
2
0
2
19
19

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
11
11
11
10
9
8
7
6
6
5
3
4
4
5
6
6
6
6
8
9
10
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
20
20
21
20
20
19
18
18
18
16
16
18
17
16
16
16
16
16
17
17
18
19
19

Dew Point (°C)

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

Relative Humidity (%)

42
37
32
30
29
29
33
36
45
43
44
46
47
49
51
58
64
72
82
81
75
68
63
61

Pressure (mb)

1020
1019
1018
1017
1016
1016
1016
1015
1015
1015
1014
1014
1014
1014
1014
1013
1014
1014
1014
1014
1015
1015
1015
1015

Ozone (du)

288
291
290
289
291
292
293
295
297
298
300
302
303
303
304
302
302
303
306
306
306
304
302
301

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

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)

94
97
100
100
100
100
97
95
92
94
97
100
80
66
53
60
74
90
94
94
95
76
58
38

Low Clouds (% Sky Obscured)

49
34
19
12
7
2
6
10
14
18
23
24
28
32
37
54
71
86
87
91
92
69
46
22

Medium Clouds (% Sky Obscured)

2
4
45
61
100
77
87
95
92
94
97
99
80
66
53
59
67
80
94
94
95
76
56
33

High Clouds (% Sky Obscured)

74
87
100
100
100
100
74
49
23
27
26
30
35
45
45
40
40
55
40
29
21
13
6
0

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

Precipitation Probability (%)

6
5
2
0
0
0
0
0
1
2
6
11
62
70
58
52
40
31
49
66
82
69
49
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
11
13
12
11
10
9
7
8
10
11
11
12
11
10
9
9
10
11
11
11
13
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
50
51
50
35
38
44
48
49
58
66
69
72
73
75
76
79
80
81
80
77
76
62
50

Pressure (mb)

1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1013
1013
1012
1012
1012
1011
1011
1011
1011
1011
1012
1012
1012
1012

Ozone (du)

300
299
298
298
298
298
298
297
296
295
295
295
295
297
299
301
301
302
302
312
321
330
331
332

Tuesday 8

Waning Crescent 4%

03:57

18:34

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

Sun - Rise: 06:26, Set: 19:31, Transit: 12:58. Moon - Rise: 03:57, Set: 18:34. Civil Dark: 20:05 - 05:52. Nautical Dark: 20:47 - 05:11. Astro Dark: 21:32 - 04:26

Total Clouds (% Sky Obscured)

26
17
7
10
20
43
39
31
21
19
17
15
11
12
11
12
13
12
14
15
14
28
43
58

Low Clouds (% Sky Obscured)

17
12
7
9
10
12
10
8
7
5
4
3
3
2
2
2
2
2
2
4
5
21
37
53

Medium Clouds (% Sky Obscured)

22
11
0
0
0
0
3
3
0
0
1
1
1
0
0
0
0
0
0
0
0
2
4
5

High Clouds (% Sky Obscured)

0
0
0
10
20
43
39
23
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
1

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 (%)

5
5
3
7
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
4
3

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)

16
16
16
16
14
13
12
11
11
10
10
9
9
9
8
8
8
8
7
9
10
11
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
15
14
13
13
13
13
12
13
13
13
12
12
9
9
9
9
9
9
8
9
10
10
11

Dew Point (°C)

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

Relative Humidity (%)

40
37
35
33
36
40
44
50
56
64
67
73
77
80
81
81
82
84
85
73
64
56
52
50

Pressure (mb)

1013
1013
1013
1013
1013
1013
1013
1014
1014
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1016

Ozone (du)

332
333
334
335
336
338
339
341
343
345
344
343
343
342
341
341
340
339
339
338
338
337
338
339

Wednesday 9

Waning Crescent 1%

05:24

18:51

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: 06:28, Set: 19:29, Transit: 12:57. Moon - Rise: 05:24, Set: 18:51. Civil Dark: 20:03 - 05:54. Nautical Dark: 20:44 - 05:13. Astro Dark: 21:29 - 04:28

Total Clouds (% Sky Obscured)

72
86
99
94
89
84
89
94
99
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

67
81
95
86
80
77
77
75
75
76
72
72
69
65
58
64
70
75

Medium Clouds (% Sky Obscured)

6
6
3
3
3
3
3
3
0
0
4
8
32
55
74
83
91
99

High Clouds (% Sky Obscured)

7
17
44
47
25
4
33
56
79
86
93
100
100
100
100
76
52
28

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 (%)

3
2
1
2
2
1
5
5
1
3
3
2
23
38
49
47
47
48

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)

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

Chance of Frost

Temperature (°C)

16
16
17
17
16
16
16
15
15
14
14
14
13
13
13
13
13
13

Feels Like (°C)

12
13
13
13
12
13
12
11
12
12
12
11
11
12
12
12
11
11

Dew Point (°C)

6
6
6
6
6
6
6
6
6
5
5
5
5
6
6
6
7
7

Relative Humidity (%)

48
48
49
49
51
53
54
54
54
55
56
56
56
59
60
63
66
69

Pressure (mb)

1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012

Ozone (du)

340
339
338
337
333
329
325
322
318
315
313
312
311
312
312
313
313
313

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

Generated: 03/09/26 13:39:20. Forecast: 03/09/26 to 09/09/26. Timezone: UTC+1.00