Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 13

Waxing Crescent 13%

10:46

19:55

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

Sun - Rise: 06:34, Set: 19:17, Transit: 12:56. Moon - Rise: 10:46, Set: 19:55. Civil Dark: 19:51 - 06:01. Nautical Dark: 20:32 - 05:20. Astro Dark: 21:15 - 04:37

Total Clouds (% Sky Obscured)

91
92
94
85
96
100
98
91
83
44
62
48
47
100
93
92
42
93
94
82
48
55
40
25

Low Clouds (% Sky Obscured)

80
84
81
81
81
49
61
83
80
43
59
48
47
89
67
70
33
68
88
72
44
49
38
25

Medium Clouds (% Sky Obscured)

18
15
0
4
4
0
4
4
1
10
14
28
31
33
23
20
14
22
10
13
16
14
0
0

High Clouds (% Sky Obscured)

91
92
73
41
84
99
91
56
8
3
3
0
0
0
0
0
0
0
0
2
2
0
2
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
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
0
2
0
0
0
0
0
0
0
2
16
5
12
18
18
3
4
10
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
5
4
6
7
7
7
7
7
6
8
9
9
9
9
9
11
11
10
8
8
6
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
92
90
89
89
95
92
85
82
81
75
68
64
65
61
59
57
62
70
74
84
86
89

Pressure (mb)

1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1022
1022
1022
1022
1021
1021
1020
1020
1019
1019
1020
1020
1019

Ozone (du)

286
284
282
282
281
280
280
281
282
284
283
284
284
285
287
287
288
290
290
291
290
288
287
288

Monday 14

Waxing Crescent 21%

12:04

20:14

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

Sun - Rise: 06:36, Set: 19:15, Transit: 12:55. Moon - Rise: 12:04, Set: 20:14. Civil Dark: 19:49 - 06:02. Nautical Dark: 20:29 - 05:22. Astro Dark: 21:12 - 04:39

Total Clouds (% Sky Obscured)

28
28
36
45
56
100
100
100
97
95
91
81
56
65
43
53
44
39
21
13
0
0
0
0

Low Clouds (% Sky Obscured)

28
28
36
45
50
59
60
55
52
60
82
68
56
65
32
20
27
28
10
6
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
13
24
94
0
1
25
32
84
19
0
0
17
21
10
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
40
100
100
100
44
45
14
13
1
0
0
0
0
0
0
0
0
0
0
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
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
1
4
32
17
3
5
1
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
7
8
9
9
10
11
10
11
12
12
13
13
13
13
14
15
14
13
11
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

17
17
16
16
16
16
16
16
15
15
14
16
15
14
10
7
8
9
5
6
6
6
6
6

Relative Humidity (%)

90
92
93
95
93
95
93
93
92
87
82
86
76
70
53
42
43
48
40
44
48
53
56
61

Pressure (mb)

1019
1019
1018
1018
1017
1017
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1017
1017
1017

Ozone (du)

287
286
286
286
287
286
286
287
288
289
291
294
298
302
308
315
314
317
321
326
329
333
336
336

Tuesday 15

Waxing Crescent 30%

13:20

20:39

23 Good
00 Good
01 Good
02 OK
03 Good
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
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

Sun - Rise: 06:38, Set: 19:12, Transit: 12:55. Moon - Rise: 13:20, Set: 20:39. Civil Dark: 19:46 - 06:04. Nautical Dark: 20:26 - 05:24. Astro Dark: 21:09 - 04:41

Total Clouds (% Sky Obscured)

0
0
5
19
18
28
32
29
23
41
42
87
85
88
93
92
79
85
91
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
4
17
18
25
29
28
23
41
42
86
81
80
66
61
52
45
57
37
41
41
40
11

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
2
19
27
23
11
20
14
9
16
19
25
20

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
24
0
75
100
100
92
91
97

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
2
2
4
6
3
4
5
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
72
76
77
80
83
84
87
87
84
74
63
61
65
62
54
57
52
56
57
58
62
63
62

Pressure (mb)

1017
1018
1017
1017
1017
1017
1017
1018
1018
1018
1019
1019
1018
1019
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017

Ozone (du)

335
334
335
334
332
333
333
334
336
336
337
337
336
334
334
329
326
321
316
312
308
306
304
302

Wednesday 16

Waxing Crescent 39%

14:30

21:14

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:39, Set: 19:10, Transit: 12:55. Moon - Rise: 14:30, Set: 21:14. Civil Dark: 19:44 - 06:06. Nautical Dark: 20:24 - 05:25. Astro Dark: 21:06 - 04:43

Total Clouds (% Sky Obscured)

100
99
100
100
100
100
100
100
98
98
100
86
72
63
75
88
100
100
99
100
89
79
71
58

Low Clouds (% Sky Obscured)

5
0
14
30
53
84
36
36
36
80
86
81
72
63
44
24
19
32
16
3
3
4
5
3

Medium Clouds (% Sky Obscured)

19
99
99
81
67
99
96
91
92
13
97
14
72
63
75
88
77
79
94
100
88
79
71
58

High Clouds (% Sky Obscured)

94
91
93
97
100
100
100
100
85
85
88
75
46
30
53
78
100
82
65
52
46
56
50
40

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

3
8
9
9
2
3
3
2
14
22
46
63
41
30
23
8
1
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.5
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
6
6
6
6
7
8
9
10
10
12
13
14
15
9
7
6
6
5
6
7
6
7

Relative Humidity (%)

66
70
68
66
70
71
71
75
80
80
80
86
87
86
82
55
50
47
47
48
53
58
60
63

Pressure (mb)

1017
1016
1016
1015
1014
1014
1013
1012
1011
1011
1011
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1010
1010
1011

Ozone (du)

301
301
300
301
302
301
301
302
304
303
302
304
305
307
308
310
310
310
310
310
311
311
313
316

Thursday 17

Waxing Crescent 49%

15:29

22:00

23 OK
00 Good
01 Good
02 Good
03 Good
04 Good
05 OK
06 OK
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

Sun - Rise: 06:41, Set: 19:08, Transit: 12:54. Moon - Rise: 15:29, Set: 22:00. Civil Dark: 19:41 - 06:07. Nautical Dark: 20:21 - 05:27. Astro Dark: 21:04 - 04:45

Total Clouds (% Sky Obscured)

38
13
5
4
3
14
25
38
55
90
93
72
69
85
90
94
100
100
100
100
95
90
85
81

Low Clouds (% Sky Obscured)

3
3
5
4
3
4
2
3
2
1
0
9
15
67
73
79
86
89
92
93
67
40
12
13

Medium Clouds (% Sky Obscured)

38
13
5
0
0
0
0
0
0
5
7
10
13
18
21
28
30
45
35
20
5
5
4
2

High Clouds (% Sky Obscured)

1
4
0
0
0
14
25
38
55
80
83
41
21
1
19
32
47
43
35
36
52
70
85
81

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
1
0
10
17
23
26
27
30
31

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
75
79
81
84
87
88
91
91
83
71
61
56
54
50
50
50
49
53
57
61
67
73
79

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1013
1013
1013
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011

Ozone (du)

317
317
315
309
303
302
304
304
304
302
300
299
296
297
295
296
296
296
297
297
298
298
297
297

Friday 18

First Quarter 59%

16:17

22:59

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:42, Set: 19:05, Transit: 12:54. Moon - Rise: 16:17, Set: 22:59. Civil Dark: 19:39 - 06:09. Nautical Dark: 20:19 - 05:29. Astro Dark: 21:01 - 04:47

Total Clouds (% Sky Obscured)

77
73
80
90
98
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

11
13
38
64
89
91
93
95
100
100
100
100
100
100
100
100
100
100
100
100
100
95
95
95

Medium Clouds (% Sky Obscured)

5
7
15
23
31
53
75
98
95
95
97
89
82
74
56
37
19
16
11
6
13
19
21
20

High Clouds (% Sky Obscured)

77
73
76
76
81
89
95
100
100
100
100
100
100
100
99
97
94
93
94
94
89
84
79
83

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
7
5
7
8
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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

30
25
32
34
33
41
53
64
61
53
37
28
21
12
10
7
1
5
5
2
3
2
0
5

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0.3
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
12
13
13
14
14
14
15
15
15
15
15
15
16
16
16
15
15
15
15
15
14
14
14

Relative Humidity (%)

79
80
81
83
83
86
89
93
96
95
93
92
92
90
88
86
85
83
85
85
86
85
86
87

Pressure (mb)

1011
1010
1010
1010
1010
1009
1009
1010
1010
1010
1011
1012
1012
1013
1013
1014
1014
1014
1015
1016
1016
1017
1018
1019

Ozone (du)

294
292
290
288
286
284
283
281
280
279
278
277
277
276
275
275
275
274
274
274
275
276
278
280

Saturday 19

Waxing Gibbous 68%

16:52

22:59

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: 06:44, Set: 19:03, Transit: 12:54. Moon - Rise: 16:52, Set: 22:59. Civil Dark: 19:37 - 06:11. Nautical Dark: 20:16 - 05:31. Astro Dark: 20:58 - 04:49

Total Clouds (% Sky Obscured)

99
99
99
98
98
98
99
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

95
95
95
94
94
91
89
89
90
89
90
93
94
97
97
97
94
96
98
100

Medium Clouds (% Sky Obscured)

20
19
17
16
9
11
13
14
13
12
7
19
36
50
58
66
70
58
39
19

High Clouds (% Sky Obscured)

84
86
67
50
42
54
63
63
51
35
37
51
66
85
89
87
86
58
31
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
8
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
None
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

5
4
15
18
19
22
24
28
48
62
75
79
85
92
95
95
95
95
92
71

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0.3
0.4
0.5
0.5
0.6
0.9
1
1.3
1
0.7
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
90
90
92
93
93
93
90
89
90
92
92
90
87
86
86
84
84
83
84

Pressure (mb)

1019
1019
1020
1020
1020
1020
1021
1021
1021
1022
1022
1023
1023
1023
1023
1023
1022
1022
1022
1022

Ozone (du)

282
284
286
286
286
286
285
285
284
284
284
284
282
281
280
279
278
277
277
278

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

Generated: 13/09/26 23:25:41. Forecast: 13/09/26 to 19/09/26. Timezone: UTC+1.00