Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 30

Waning Gibbous 76%

20:28

13:37

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

Sun - Rise: 07:02, Set: 18:38, Transit: 12:50. Moon - Rise: 20:28, Set: 13:37. Civil Dark: 19:11 - 06:29. Nautical Dark: 19:50 - 05:50. Astro Dark: 20:30 - 05:10

Total Clouds (% Sky Obscured)

24
35
45
46
74
56
40
50
50
38
33
32
28
25
27
41
36
48
16
22
31
32
27
31

Low Clouds (% Sky Obscured)

24
30
22
46
57
40
32
38
34
26
24
23
20
20
21
23
17
33
14
12
22
3
6
0

Medium Clouds (% Sky Obscured)

23
27
45
5
38
10
3
3
4
3
0
0
0
0
0
21
18
9
0
7
5
0
0
2

High Clouds (% Sky Obscured)

24
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
2
32
27
31

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 (%)

87
95
62
2
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
65
68
76
74
73
79
83
86
82
71
62
53
47
43
41
38
37
37
43
50
54
53
55

Pressure (mb)

1015
1015
1015
1016
1016
1016
1017
1018
1018
1019
1020
1021
1022
1022
1023
1023
1023
1023
1024
1025
1026
1026
1027
1028

Ozone (du)

288
290
292
293
294
296
297
297
300
305
307
308
309
311
312
312
312
311
311
309
306
304
304
303

Thursday 1

Waning Gibbous 66%

21:28

14:47

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

Sun - Rise: 07:04, Set: 18:35, Transit: 12:50. Moon - Rise: 21:28, Set: 14:47. Civil Dark: 19:09 - 06:30. Nautical Dark: 19:48 - 05:51. Astro Dark: 20:28 - 05:11

Total Clouds (% Sky Obscured)

61
10
21
38
7
17
22
37
45
33
18
21
28
32
33
57
62
62
69
77
65
86
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
5
10
11
11
8
10
13
14
21
19
0
1
8
12
2
0
0
1
2

Medium Clouds (% Sky Obscured)

17
3
3
3
3
3
3
17
25
18
0
0
0
0
0
0
0
0
0
0
0
0
0
2

High Clouds (% Sky Obscured)

61
5
20
38
4
7
4
2
5
2
2
2
10
6
13
53
53
49
52
75
65
86
99
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)

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

Chance of Frost

Temperature (°C)

12
12
11
11
11
10
10
10
10
11
13
15
17
19
20
21
21
21
20
19
17
16
15
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
60
64
67
73
78
81
80
81
77
69
65
59
52
47
43
41
42
42
46
52
57
64
69

Pressure (mb)

1028
1028
1028
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1029
1029
1028
1028
1028
1028
1028
1029
1029
1029

Ozone (du)

304
304
302
302
302
302
303
304
305
306
305
304
302
300
300
299
299
298
298
298
297
298
298
300

Friday 2

Waning Gibbous 54%

22:45

15:39

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 OK
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:05, Set: 18:33, Transit: 12:49. Moon - Rise: 22:45, Set: 15:39. Civil Dark: 19:06 - 06:32. Nautical Dark: 19:45 - 05:53. Astro Dark: 20:25 - 05:13

Total Clouds (% Sky Obscured)

100
91
61
63
62
64
65
68
61
65
66
56
60
84
99
82
75
64
43
49
48
50
54
55

Low Clouds (% Sky Obscured)

6
7
9
10
12
12
15
15
16
19
24
39
47
66
60
47
14
5
0
0
16
32
44
42

Medium Clouds (% Sky Obscured)

4
4
3
0
0
0
4
4
4
6
16
47
11
9
29
16
35
35
26
27
34
24
19
16

High Clouds (% Sky Obscured)

100
83
45
45
40
35
35
45
45
42
24
1
2
2
50
67
67
2
2
2
2
2
4
22

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
2
3
6
8
20
6
0
4
8
8
13

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
11
10
10
10
10
9
9
9
11
14
16
18
17
18
20
20
18
16
15
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

74
75
76
79
79
80
81
83
83
79
71
65
62
59
63
68
56
48
49
56
56
56
53
53

Pressure (mb)

1029
1029
1029
1029
1028
1028
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028
1029
1029
1030
1030

Ozone (du)

301
300
299
299
300
300
300
299
298
298
298
299
302
304
306
307
306
306
304
303
304
305
304
305

Saturday 3

Third Quarter 42%

No Rise

16:15

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

Sun - Rise: 07:07, Set: 18:31, Transit: 12:49. Moon - Rise: No Rise, Set: 16:15. Civil Dark: 19:04 - 06:34. Nautical Dark: 19:43 - 05:55. Astro Dark: 20:23 - 05:15

Total Clouds (% Sky Obscured)

53
48
48
36
31
34
34
39
40
34
34
37
41
50
57
68
60
61
51
8
14
20
24
31

Low Clouds (% Sky Obscured)

41
40
36
29
28
28
31
33
34
34
34
35
34
32
26
23
17
12
5
0
0
0
0
0

Medium Clouds (% Sky Obscured)

13
8
6
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

36
48
34
16
0
0
0
2
3
4
3
13
24
46
48
60
60
60
50
7
14
20
24
31

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 (%)

10
14
12
7
6
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
58
61
65
74
83
89
90
90
86
72
65
59
52
47
44
41
41
41
47
51
53
54
58

Pressure (mb)

1030
1030
1030
1030
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1029
1029
1028
1028
1028
1028
1028
1028
1028
1028

Ozone (du)

306
306
307
307
305
304
302
301
301
299
298
297
297
296
296
294
293
292
290
288
286
284
283
282

Sunday 4

Waning Crescent 31%

00:11

16:39

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 OK
18 OK
19 OK
20 OK
21 Good
22 OK

Sun - Rise: 07:09, Set: 18:28, Transit: 12:49. Moon - Rise: 00:11, Set: 16:39. Civil Dark: 19:02 - 06:35. Nautical Dark: 19:41 - 05:56. Astro Dark: 20:20 - 05:17

Total Clouds (% Sky Obscured)

92
100
95
92
88
79
89
89
92
96
100
88
76
54
58
58
57
50
44
37
30
22
16
25

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
2
3
12
19
27
22
18
20
13
7
0
3

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

92
100
95
92
88
79
89
89
92
95
100
85
68
40
39
36
40
31
28
20
18
17
15
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
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)

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

Chance of Frost

Temperature (°C)

13
12
12
11
11
11
10
10
10
11
13
15
16
18
20
20
21
21
20
19
18
17
16
14

Feels Like (°C)

14
11
11
10
9
9
8
8
8
9
11
12
15
16
18
18
18
18
19
20
20
15
16
15

Dew Point (°C)

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

Relative Humidity (%)

65
75
80
81
77
77
73
68
67
68
69
67
64
57
49
45
40
37
40
44
47
48
50
52

Pressure (mb)

1028
1028
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1025
1025
1024
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

282
282
281
279
278
276
277
276
276
275
274
273
273
272
272
272
272
272
271
271
271
271
271
271

Monday 5

Waning Crescent 20%

01:39

16:57

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

Sun - Rise: 07:10, Set: 18:26, Transit: 12:48. Moon - Rise: 01:39, Set: 16:57. Civil Dark: 19:00 - 06:37. Nautical Dark: 19:39 - 05:58. Astro Dark: 20:18 - 05:19

Total Clouds (% Sky Obscured)

33
42
59
78
99
92
84
76
62
46
32
43
60
84
87
85
78
75
75
76
74
73
73
78

Low Clouds (% Sky Obscured)

5
8
6
4
4
5
6
13
11
9
11
12
13
14
10
13
14
15
16
19
35
41
44
41

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
13
23
27
25
23
20
15
10
10
20

High Clouds (% Sky Obscured)

26
30
53
76
99
90
81
72
54
36
19
31
53
79
76
74
68
71
69
71
69
68
73
77

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
1

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)

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
2
3
2
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
14
10
11
10
10
11
10
9
9
10
11
11
12
19
19
19
19
20
21
16
17
17

Dew Point (°C)

5
6
6
6
6
5
5
4
3
3
2
2
1
-1
-1
-1
0
1
3
6
8
9
10
11

Relative Humidity (%)

56
61
65
65
66
66
64
60
58
51
45
41
33
28
23
24
25
26
33
42
54
60
67
74

Pressure (mb)

1022
1022
1022
1022
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

272
273
274
274
274
275
275
276
276
278
280
281
282
283
284
286
287
289
291
293
295
295
295
295

Tuesday 6

Waning Crescent 12%

03:04

17:11

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
18 Bad

Sun - Rise: 07:12, Set: 18:24, Transit: 12:48. Moon - Rise: 03:04, Set: 17:11. Civil Dark: 18:57 - 06:39. Nautical Dark: 19:36 - 06:00. Astro Dark: 20:16 - 05:20

Total Clouds (% Sky Obscured)

86
100
100
100
100
100
100
100
100
100
99
99
99
100
100
100
100
99
99
98

Low Clouds (% Sky Obscured)

39
29
23
17
17
18
21
26
47
67
88
93
97
100
96
91
87
84
82
79

Medium Clouds (% Sky Obscured)

26
37
58
79
100
99
99
99
96
94
91
93
96
99
88
77
66
50
43
33

High Clouds (% Sky Obscured)

82
91
95
98
100
97
94
92
85
77
69
81
90
100
100
100
100
80
60
40

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

4
5
20
13
16
25
33
45
42
34
19
29
31
30
37
42
48
49
46
37

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
3
3
3
4
4
5
5
5
7
8
10
10
11
11
12
13
14
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
16
16
12
12
12
12
12
12
10
10
10
11
11
11
8
8
7
8
8

Dew Point (°C)

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

Relative Humidity (%)

79
84
89
92
92
93
93
95
95
93
90
87
86
83
81
80
80
80
77
76

Pressure (mb)

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

Ozone (du)

294
293
293
296
299
302
302
303
304
302
301
299
300
300
301
304
308
312
316
321

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

Generated: 30/09/26 23:31:56. Forecast: 30/09/26 to 06/10/26. Timezone: UTC+1.00