Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 26

Full Moon 100%

18:27

07:52

18 OK
19 OK
20 OK
21 OK
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
17 Bad

Sun - Rise: 06:55, Set: 18:49, Transit: 12:51. Moon - Rise: 18:27, Set: 07:52. Civil Dark: 19:23 - 06:22. Nautical Dark: 20:02 - 05:43. Astro Dark: 20:43 - 05:02

Total Clouds (% Sky Obscured)

21
38
43
41
67
88
99
94
93
100
100
100
100
100
74
81
95
92
97
100
100
100
100
100

Low Clouds (% Sky Obscured)

18
3
0
0
0
0
0
0
0
2
36
44
42
29
23
28
28
32
28
40
74
93
33
28

Medium Clouds (% Sky Obscured)

21
38
43
41
67
57
39
18
9
78
85
67
50
65
68
75
86
69
84
100
99
93
100
100

High Clouds (% Sky Obscured)

21
38
41
41
21
66
97
84
87
100
100
100
100
99
43
30
38
67
86
100
54
55
99
73

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
1
0
1
0
0
0
1
9
14
24
17
13
8
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)

3
2
2
3
4
4
4
4
4
4
4
5
5
6
7
9
11
12
13
14
15
14
14
13

Chance of Frost

Temperature (°C)

18
16
15
14
13
12
12
11
11
11
11
11
12
12
13
15
17
18
20
21
20
20
19
19

Feels Like (°C)

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

Dew Point (°C)

4
3
2
1
1
4
5
4
3
3
5
7
9
10
11
12
12
12
11
10
11
12
11
11

Relative Humidity (%)

39
40
40
40
45
58
63
60
57
58
65
75
81
84
84
80
74
68
56
50
55
61
58
58

Pressure (mb)

1022
1022
1022
1022
1022
1021
1021
1020
1020
1019
1018
1017
1017
1016
1015
1015
1014
1013
1013
1012
1011
1011
1011
1011

Ozone (du)

297
296
296
296
295
295
294
294
294
296
297
296
294
293
293
294
294
295
295
294
294
293
291
290

Sunday 27

Waning Gibbous 98%

18:40

09:17

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
17 Bad

Sun - Rise: 06:57, Set: 18:47, Transit: 12:51. Moon - Rise: 18:40, Set: 09:17. Civil Dark: 19:20 - 06:24. Nautical Dark: 19:59 - 05:45. Astro Dark: 20:40 - 05:04

Total Clouds (% Sky Obscured)

100
99
71
79
89
72
98
71
81
93
100
92
100
94
100
100
100
100
100
99
100
100
100
100

Low Clouds (% Sky Obscured)

45
77
63
78
85
16
0
0
0
0
3
0
14
12
0
0
0
0
4
2
12
15
14
8

Medium Clouds (% Sky Obscured)

98
76
65
3
39
45
50
26
38
48
91
92
100
85
100
100
100
61
95
98
94
95
96
99

High Clouds (% Sky Obscured)

99
97
71
69
77
59
98
67
62
80
100
46
93
74
100
91
100
100
100
59
100
100
100
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
27
37
32
5
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 (%)

8
6
36
37
9
2
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
4
2
5

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
10
10
9
9
9
8
7
6
5
4
3
3
3
3
2
4
5
5
5
6
6
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
16
16
14
14
13
11
11
10
9
8
8
8
8
8
10
11
12
14
14
16
15
15
15

Dew Point (°C)

14
15
15
14
14
12
12
12
11
10
9
8
7
7
7
7
8
7
7
7
7
6
5
5

Relative Humidity (%)

71
80
83
85
86
83
87
90
90
90
88
87
85
85
82
75
70
62
54
50
49
46
44
43

Pressure (mb)

1011
1012
1012
1013
1014
1015
1016
1017
1017
1018
1018
1019
1019
1020
1020
1021
1021
1021
1021
1021
1021
1020
1020
1020

Ozone (du)

293
294
294
294
293
292
292
293
294
293
292
292
294
294
294
297
299
298
299
298
299
299
300
301

Monday 28

Waning Gibbous 93%

18:56

10:44

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
17 Bad

Sun - Rise: 06:59, Set: 18:45, Transit: 12:50. Moon - Rise: 18:56, Set: 10:44. Civil Dark: 19:18 - 06:25. Nautical Dark: 19:57 - 05:46. Astro Dark: 20:37 - 05:06

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
96
100
100
100
99
100
100
100
100
88
82
91
76
100
89
86

Low Clouds (% Sky Obscured)

23
24
25
29
25
30
30
29
33
47
74
75
58
55
16
15
20
37
39
48
29
12
8
5

Medium Clouds (% Sky Obscured)

98
35
34
33
100
100
84
33
88
95
90
96
38
99
100
80
36
31
23
22
11
3
45
28

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
55
88
100
99
56
79
60
65
65
2
6
28
49
100
75
63

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
4
9
9
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
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

18
23
48
52
62
80
79
46
15
3
16
10
40
46
37
21
5
2
2
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0.3
0.6
0.7
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
16
15
14
14
14
15
15
15
15
15
15
16
15
16
17
18
20
21
23
23
24
25
24

Feels Like (°C)

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

Dew Point (°C)

5
6
8
10
11
12
12
13
13
13
14
14
14
14
15
16
18
18
18
18
18
17
17
16

Relative Humidity (%)

47
51
63
74
79
83
86
86
87
87
90
90
92
93
95
95
96
92
81
75
72
63
61
61

Pressure (mb)

1020
1020
1020
1020
1019
1019
1019
1018
1017
1016
1016
1015
1015
1015
1014
1014
1014
1014
1013
1013
1012
1012
1011
1011

Ozone (du)

302
303
304
305
304
305
305
305
305
305
305
306
303
300
301
300
299
299
299
297
295
293
290
289

Tuesday 29

Waning Gibbous 86%

19:16

12:13

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 OK
17 OK

Sun - Rise: 07:00, Set: 18:42, Transit: 12:50. Moon - Rise: 19:16, Set: 12:13. Civil Dark: 19:16 - 06:27. Nautical Dark: 19:55 - 05:48. Astro Dark: 20:35 - 05:08

Total Clouds (% Sky Obscured)

79
75
77
75
83
92
100
100
100
99
100
100
100
100
100
100
78
60
40
48
60
71
20
20

Low Clouds (% Sky Obscured)

2
2
2
0
4
48
12
68
50
78
71
61
50
67
81
95
64
60
40
48
16
21
14
11

Medium Clouds (% Sky Obscured)

21
19
10
3
46
38
44
77
90
98
99
99
100
99
65
97
40
60
40
48
59
65
5
10

High Clouds (% Sky Obscured)

41
51
65
75
83
92
100
97
95
94
92
91
88
91
95
100
72
20
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
5
5
9
9
3
3
9
9
9
6
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
Very Light Rain
Light Rain
None
None
Light Rain
Light Rain
Light Rain
None
None
Light Rain
None
None
None
None
None

Precipitation Probability (%)

2
19
31
21
9
16
4
23
47
74
92
55
57
95
95
94
37
43
71
36
17
1
1
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0.6
0
0
0.6
1.6
0.6
0
0
0.4
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
21
21
21
20
20
20
20
20
19
19
19
19
19
19
18
18
19
20
20
20
21
22
21

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
75
80
81
76
71
69
75
80
84
89
92
92
91
92
90
90
82
75
84
75
65
61
62

Pressure (mb)

1011
1011
1011
1010
1010
1009
1009
1009
1009
1009
1009
1008
1008
1008
1009
1010
1010
1011
1011
1012
1012
1012
1013
1013

Ozone (du)

289
286
283
282
280
278
277
277
276
276
276
277
278
280
281
282
286
287
291
292
293
294
296
299

Wednesday 30

Waning Gibbous 76%

19:45

13:37

18 OK
19 OK
20 OK
21 OK
22 OK
23 OK
00 OK
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
17 Bad

Sun - Rise: 07:02, Set: 18:40, Transit: 12:50. Moon - Rise: 19:45, Set: 13:37. Civil Dark: 19:13 - 06:29. Nautical Dark: 19:52 - 05:50. Astro Dark: 20:32 - 05:10

Total Clouds (% Sky Obscured)

21
24
24
27
29
32
39
92
100
100
100
84
48
63
63
59
55
56
57
58
64
70
57
47

Low Clouds (% Sky Obscured)

9
6
4
2
7
10
14
15
21
28
31
36
44
36
30
23
15
14
12
33
53
70
52
30

Medium Clouds (% Sky Obscured)

14
18
21
24
20
12
7
65
83
90
92
71
22
4
5
6
5
5
4
5
6
5
4
2

High Clouds (% Sky Obscured)

0
0
1
1
7
10
20
34
42
36
47
48
48
36
43
50
55
50
40
28
15
3
12
21

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
1
2
13
16
7
5
3
0
0
0
0
0
1
1
4
5
3
8
6

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
13
13
13
12
12
12
12
12
12
12
12
12
11
10
9
9
8
8
8
8
8
9
9

Relative Humidity (%)

64
71
77
78
80
79
80
82
84
87
89
90
90
89
80
73
66
61
55
51
52
52
52
57

Pressure (mb)

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

Ozone (du)

304
307
307
305
304
304
303
304
305
307
309
311
314
316
317
317
318
318
319
319
317
315
313
311

Thursday 1

Waning Gibbous 66%

20:28

14:47

18 OK
19 OK
20 OK
21 Bad
22 OK
23 OK
00 OK
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
17 Bad

Sun - Rise: 07:04, Set: 18:38, Transit: 12:50. Moon - Rise: 20:28, Set: 14:47. Civil Dark: 19:11 - 06:30. Nautical Dark: 19:50 - 05:51. Astro Dark: 20:30 - 05:11

Total Clouds (% Sky Obscured)

38
41
44
51
48
39
35
58
69
75
76
80
80
77
74
68
72
76
76
73
68
63
62
62

Low Clouds (% Sky Obscured)

10
10
8
7
5
3
0
4
9
13
21
27
34
36
37
39
37
33
28
18
14
11
11
12

Medium Clouds (% Sky Obscured)

0
8
16
23
38
39
35
53
60
63
71
77
80
64
49
33
29
28
24
26
29
30
20
10

High Clouds (% Sky Obscured)

24
24
30
40
40
39
35
41
38
29
30
37
40
35
29
20
30
41
55
54
49
44
42
43

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
1
1
0
0
0
0
1
4
4
10
10
4
5
5

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
12
12
12
12
11
11
11
11
11
10
11
10
11
11
11
12
13
13
17
16
16
16

Dew Point (°C)

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

Relative Humidity (%)

62
67
72
75
79
79
79
79
80
83
84
83
83
82
79
76
73
66
60
54
52
50
48
53

Pressure (mb)

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

Ozone (du)

309
307
307
306
306
306
307
308
308
308
309
311
314
316
315
315
314
313
311
310
308
307
305
303

Friday 2

Waning Gibbous 54%

21:28

15:39

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: 07:05, Set: 18:35, Transit: 12:49. Moon - Rise: 21:28, Set: 15:39. Civil Dark: 19:09 - 06:32. Nautical Dark: 19:48 - 05:53. Astro Dark: 20:28 - 05:13

Total Clouds (% Sky Obscured)

62
74
86
100
88
76
61
68
73
77
74
71
68
69
69
70
65
61
55

Low Clouds (% Sky Obscured)

16
13
10
7
14
23
32
44
52
59
59
48
38
37
30
27
26
22
22

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

47
64
84
100
88
76
61
67
60
55
49
41
35
37
39
46
38
31
23

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 (%)

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

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)

7
5
5
5
5
5
4
4
4
4
4
4
4
3
4
4
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
12
12
13
13
13
13
10
11
10
10
10
10
10
10
11
12
12

Dew Point (°C)

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

Relative Humidity (%)

58
64
68
70
75
76
76
77
77
79
80
80
83
83
75
66
59
54
49

Pressure (mb)

1027
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1031
1030
1030

Ozone (du)

301
299
299
299
300
299
298
298
297
297
297
296
296
295
296
296
296
296
296

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

Generated: 26/09/26 18:45:22. Forecast: 26/09/26 to 02/10/26. Timezone: UTC+1.00