Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 25

Waxing Gibbous 100%

16:00

05:50

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

Sun - Rise: 06:43, Set: 16:45, Transit: 11:44. Moon - Rise: 16:00, Set: 05:50. Civil Dark: 17:20 - 06:09. Nautical Dark: 17:59 - 05:29. Astro Dark: 18:38 - 04:50

Total Clouds (% Sky Obscured)

52
27
34
18
27
55
6
23
36
33
29
36
30
19
13
10
1
5
1
3
99
100
100
100

Low Clouds (% Sky Obscured)

13
9
7
17
26
55
6
19
31
28
24
31
26
17
12
10
0
0
0
1
1
2
2
2

Medium 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
25
25

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
0
2
99
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
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)

20
19
18
21
21
21
21
22
23
24
24
24
24
23
22
21
18
16
15
14
14
13
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
73
73
69
67
69
67
67
66
61
57
58
55
56
57
58
61
62
61
62
66
68
71
75

Pressure (mb)

992
993
993
994
995
996
997
998
999
1000
1002
1003
1004
1005
1006
1008
1009
1010
1011
1012
1013
1013
1013
1014

Ozone (du)

290
289
289
290
292
294
299
303
307
314
313
313
309
299
295
292
290
286
284
283
281
279
278
279

Monday 26

Full Moon 99%

16:19

07:17

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

Sun - Rise: 06:45, Set: 16:44, Transit: 11:44. Moon - Rise: 16:19, Set: 07:17. Civil Dark: 17:18 - 06:10. Nautical Dark: 17:58 - 05:31. Astro Dark: 18:36 - 04:52

Total Clouds (% Sky Obscured)

100
91
100
90
99
100
100
100
100
100
100
99
100
96
87
90
78
80
88
89
96
80
82
89

Low Clouds (% Sky Obscured)

41
44
81
31
44
80
77
80
91
88
90
92
100
94
86
90
76
76
86
88
95
80
82
88

Medium Clouds (% Sky Obscured)

25
74
100
90
97
98
99
100
100
100
100
99
81
1
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

96
80
100
63
90
100
100
67
93
100
100
74
100
25
25
18
2
0
0
0
0
0
0
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
6
4
5
8
5
3
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
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
1
5
32
72
92
95
81
95
95
76
26
3
1
13
1
1
18
7
20
12
26

Precipitation Amount (mm)

0
0
0
0
0
0
0.4
0.7
1
0.3
0.8
1.5
0.5
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
8
8
9
10
8
7
9
11
14
15
16
16
16
16
17
18
18
17
17
18
19
18
19

Chance of Frost

Temperature (°C)

7
7
7
8
8
8
8
9
9
10
11
11
12
13
15
15
15
15
15
15
15
16
16
16

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
3
3
4
6
8
9
9
10
12
13
14
14
13
12
12
12
12
13
13
13

Relative Humidity (%)

78
78
77
69
70
71
73
84
91
90
90
92
96
95
95
90
85
82
82
82
82
85
85
85

Pressure (mb)

1014
1014
1013
1013
1013
1012
1012
1011
1011
1009
1008
1007
1006
1005
1005
1005
1005
1005
1005
1005
1005
1005
1004
1003

Ozone (du)

278
276
274
273
272
272
271
272
271
270
269
268
270
273
275
274
272
271
268
264
261
258
257
257

Tuesday 27

Waning Gibbous 98%

16:46

08:48

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

Sun - Rise: 06:47, Set: 16:42, Transit: 11:44. Moon - Rise: 16:46, Set: 08:48. Civil Dark: 17:16 - 06:12. Nautical Dark: 17:56 - 05:33. Astro Dark: 18:35 - 04:54

Total Clouds (% Sky Obscured)

96
100
98
100
100
100
100
84
91
89
49
44
46
50
69
56
35
32
30
28
55
37
32
28

Low Clouds (% Sky Obscured)

92
100
97
95
100
76
75
72
64
75
47
44
44
50
52
40
31
29
28
28
33
35
32
28

Medium Clouds (% Sky Obscured)

8
18
17
20
100
99
100
74
83
18
11
2
0
0
4
4
0
0
0
0
55
13
1
0

High Clouds (% Sky Obscured)

3
9
23
19
7
48
14
60
52
6
3
0
2
0
0
0
0
0
0
3
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

18
12
16
31
58
95
69
44
38
45
63
9
9
12
20
1
0
0
0
0
0
0
2
0

Precipitation Amount (mm)

0
0
0
0
0
1.7
0
0
0
0.2
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

20
21
21
21
22
21
18
17
17
17
17
17
17
15
15
14
12
11
11
11
11
10
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
10
10
11
11
11
11
10
9
9
8
9
9
9
9
8
8
7
7
7
7
5
7
7

Dew Point (°C)

13
13
13
13
14
13
13
12
12
11
10
9
8
7
6
6
5
5
5
5
5
5
6
6

Relative Humidity (%)

85
83
83
85
86
86
90
82
86
80
76
71
69
69
66
68
69
69
72
74
77
80
82
84

Pressure (mb)

1003
1003
1002
1002
1001
1002
1002
1003
1004
1005
1006
1007
1008
1009
1009
1011
1012
1014
1015
1016
1017
1018
1019
1020

Ozone (du)

258
259
259
259
259
261
262
264
268
271
274
277
284
293
299
299
303
309
310
311
312
312
315
315

Wednesday 28

Waning Gibbous 95%

17:24

10:17

01 OK
02 OK
03 OK
04 OK
05 OK
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 OK
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 06:49, Set: 16:40, Transit: 11:44. Moon - Rise: 17:24, Set: 10:17. Civil Dark: 17:15 - 06:14. Nautical Dark: 17:54 - 05:34. Astro Dark: 18:33 - 04:55

Total Clouds (% Sky Obscured)

27
29
25
26
25
47
67
73
82
69
79
70
89
92
90
73
65
59
51
45
50
54
62
56

Low Clouds (% Sky Obscured)

27
29
25
26
24
29
33
34
27
22
18
21
23
26
29
32
34
33
35
37
32
30
28
28

Medium Clouds (% Sky Obscured)

0
0
1
1
2
13
20
23
25
26
27
28
34
37
43
41
36
26
14
1
0
0
0
2

High Clouds (% Sky Obscured)

0
3
0
2
2
31
55
67
57
23
15
25
65
86
71
27
2
0
0
0
14
26
35
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 (%)

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
7
6
5
5
6
7
7
9
10
11
11
11
11
11
11
11
11
10
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

84
85
87
88
90
88
85
82
77
72
69
66
64
65
68
75
80
83
86
87
88
88
90
90

Pressure (mb)

1020
1021
1022
1022
1023
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1027
1027
1027
1027
1027

Ozone (du)

310
308
304
300
297
295
293
290
288
286
283
280
280
279
277
276
276
277
277
274
271
270
269
270

Thursday 29

Waning Gibbous 88%

18:20

11:35

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

Sun - Rise: 06:50, Set: 16:38, Transit: 11:44. Moon - Rise: 18:20, Set: 11:35. Civil Dark: 17:13 - 06:15. Nautical Dark: 17:52 - 05:36. Astro Dark: 18:31 - 04:57

Total Clouds (% Sky Obscured)

57
56
62
95
87
72
72
67
67
65
60
57
55
64
59
55
51
64
78
96
86
72
58
59

Low Clouds (% Sky Obscured)

30
35
33
32
33
31
28
23
23
23
21
25
32
36
23
12
0
11
19
22
15
9
6
4

Medium Clouds (% Sky Obscured)

5
6
5
4
3
2
1
0
0
0
0
7
17
30
35
24
16
15
11
8
10
10
17
21

High Clouds (% Sky Obscured)

29
23
34
93
76
61
62
62
62
50
50
32
18
5
15
19
22
50
68
91
78
64
55
46

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
9
9
9
7
7
8
10
10
11
13
13
13
13
13
13
13
13
8
8
9
8
8
8

Dew Point (°C)

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

Relative Humidity (%)

90
91
91
91
91
91
91
90
84
79
75
70
68
64
62
66
72
77
80
83
84
81
80
77

Pressure (mb)

1027
1027
1026
1027
1027
1026
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

269
268
268
269
270
270
270
269
269
269
270
269
269
268
268
268
267
267
267
267
267
267
266
265

Friday 30

Waning Gibbous 79%

19:34

12:35

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

Sun - Rise: 06:52, Set: 16:36, Transit: 11:44. Moon - Rise: 19:34, Set: 12:35. Civil Dark: 17:11 - 06:17. Nautical Dark: 17:51 - 05:37. Astro Dark: 18:29 - 04:58

Total Clouds (% Sky Obscured)

66
73
79
84
90
83
80
74
72
71
69
67
72
75
84
91
97
92
86
81
72
68
65
75

Low Clouds (% Sky Obscured)

4
4
4
4
7
15
18
22
27
32
38
36
31
27
25
19
17
33
50
67
63
61
62
71

Medium Clouds (% Sky Obscured)

22
20
21
26
31
29
22
21
21
23
27
28
31
33
49
66
78
56
37
21
16
9
4
17

High Clouds (% Sky Obscured)

42
29
30
41
57
62
75
74
72
71
59
67
72
75
80
82
89
73
58
42
45
47
53
60

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
2

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
6
6
7
6
6
6
6
7
6
7
7
13
12
11
11
11
11
8
7
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

77
77
77
80
80
82
81
80
78
75
69
66
64
64
63
69
76
83
84
85
87
88
90
90

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1025
1024
1024
1024
1024
1023
1023
1023
1024
1024
1024
1025
1025
1025
1025
1025

Ozone (du)

265
265
264
264
265
265
264
264
264
264
263
263
263
263
262
263
263
263
264
265
266
266
267
268

Saturday 31

Waning Gibbous 69%

20:59

13:16

Sun - Rise: 06:54, Set: 16:34, Transit: 11:44. Moon - Rise: 20:59, Set: 13:16. Civil Dark: 17:09 - 06:19. Nautical Dark: 17:49 - 05:39. Astro Dark: 18:28 - 05:00

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: 25/10/26 01:36:56. Forecast: 25/10/26 to 31/10/26. Timezone: UTC+1.00