Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 10

Waning Crescent 0%

06:48

19:16

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

Sun - Rise: 06:30, Set: 19:24, Transit: 12:57. Moon - Rise: 06:48, Set: 19:16. Civil Dark: 19:58 - 05:56. Nautical Dark: 20:42 - 05:14. Astro Dark: 21:26 - 04:31

Total Clouds (% Sky Obscured)

100
100
100
100
80
80
39
40
35
23
22
25
25
37
40
40
49
61
100
100
87
89
57
56

Low Clouds (% Sky Obscured)

95
80
100
96
76
74
39
40
35
23
22
25
22
34
40
22
28
39
39
33
37
26
17
51

Medium Clouds (% Sky Obscured)

98
98
99
93
74
0
8
16
18
1
3
10
16
8
0
0
15
23
12
24
18
26
25
5

High Clouds (% Sky Obscured)

100
100
100
45
0
0
0
0
0
0
0
0
0
35
40
40
49
61
100
100
40
45
23
3

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

Very Light Rain
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 (%)

93
46
30
40
19
3
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.3
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
10
11
10
12
11
9
8
7
7
6
6
6
7
8
8
8
7
7
7
7
7
5
3

Chance of Frost

Temperature (°C)

16
16
16
16
15
15
15
15
15
14
14
14
15
16
17
19
20
20
20
20
21
21
20
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
78
77
83
86
87
87
92
95
95
93
93
84
73
65
57
51
45
43
42
42
42
44
51

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1017
1018
1018
1019
1019
1020
1020
1020
1020
1020
1021
1021
1021

Ozone (du)

305
310
315
318
315
314
314
315
316
315
313
312
315
315
314
314
315
314
313
312
311
311
308
305

Friday 11

New Moon 2%

08:08

19:28

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

Sun - Rise: 06:31, Set: 19:22, Transit: 12:56. Moon - Rise: 08:08, Set: 19:28. Civil Dark: 19:56 - 05:57. Nautical Dark: 20:39 - 05:16. Astro Dark: 21:23 - 04:33

Total Clouds (% Sky Obscured)

75
77
88
82
79
81
51
63
25
62
33
44
71
62
92
78
93
93
54
79
92
88
98
100

Low Clouds (% Sky Obscured)

70
65
40
38
38
38
27
31
12
5
0
0
0
31
82
78
91
91
18
21
46
41
92
76

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
1
0
3
21
19
26
28
17
14
53
16
16
18
64
80
71
97
100

High Clouds (% Sky Obscured)

3
51
76
66
54
38
27
38
7
36
7
2
19
1
8
0
1
22
54
46
19
24
74
87

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 (%)

2
0
0
0
0
0
0
4
0
0
0
0
0
0
0
1
2
3
3
1
2
2
21
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)

3
3
3
2
2
3
4
4
4
4
5
5
6
8
9
10
12
13
13
13
14
12
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

53
54
57
61
66
69
73
75
79
84
84
84
77
66
56
55
56
55
57
51
51
52
55
62

Pressure (mb)

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

Ozone (du)

301
299
296
295
294
293
293
293
293
292
292
292
292
292
293
293
293
294
294
295
298
297
299
298

Saturday 12

Waxing Crescent 7%

09:28

19:41

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
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

Sun - Rise: 06:33, Set: 19:19, Transit: 12:56. Moon - Rise: 09:28, Set: 19:41. Civil Dark: 19:53 - 05:59. Nautical Dark: 20:37 - 05:18. Astro Dark: 21:20 - 04:35

Total Clouds (% Sky Obscured)

100
100
100
100
99
100
100
100
100
100
66
28
31
40
60
68
70
71
73
75
78
83
86
79

Low Clouds (% Sky Obscured)

92
97
81
87
83
66
77
74
79
50
31
28
31
40
49
57
64
69
54
60
67
60
54
39

Medium Clouds (% Sky Obscured)

72
95
96
86
81
98
99
100
99
37
29
0
0
0
0
0
0
0
0
0
0
6
23
66

High Clouds (% Sky Obscured)

92
100
100
100
92
100
100
29
100
70
42
0
0
0
25
24
0
41
42
47
40
52
56
43

ISS Passover

Visibility (miles)

9
9
7
3
9
8
5
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 (%)

25
19
40
57
47
44
29
14
8
2
0
0
0
0
4
10
11
0
0
0
2
1
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)

10
11
10
10
9
9
10
8
9
9
8
7
8
9
9
9
9
10
9
8
8
7
5
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
65
72
89
90
89
93
93
93
92
92
93
90
82
74
69
62
63
60
58
57
56
58
62

Pressure (mb)

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

Ozone (du)

298
297
297
298
297
295
294
293
297
300
304
305
307
302
300
298
295
293
293
292
291
290
289
288

Sunday 13

Waxing Crescent 13%

10:46

19:55

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

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: 20:34 - 05:20. Astro Dark: 21:17 - 04:37

Total Clouds (% Sky Obscured)

73
69
68
64
69
72
73
67
49
37
28
52
53
42
52
52
77
88
96
99
69
71
73
84

Low Clouds (% Sky Obscured)

19
9
6
3
0
5
10
15
16
16
23
51
36
5
24
32
65
78
93
99
58
64
68
70

Medium Clouds (% Sky Obscured)

73
55
6
9
4
4
4
4
4
0
0
4
13
19
21
16
15
14
12
7
8
5
3
8

High Clouds (% Sky Obscured)

33
23
38
45
60
57
53
46
23
14
3
0
0
0
0
0
0
0
0
0
0
0
0
17

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
3
6
14
5
4
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)

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

Chance of Frost

Temperature (°C)

18
17
17
16
16
15
15
15
14
14
14
14
15
17
19
20
22
23
23
24
23
23
23
22

Feels Like (°C)

17
17
16
16
16
14
14
14
14
15
15
14
14
16
19
21
23
23
23
23
22
23
22
22

Dew Point (°C)

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

Relative Humidity (%)

65
65
67
72
73
74
74
76
80
86
89
84
74
74
72
64
61
57
54
55
63
58
63
72

Pressure (mb)

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

Ozone (du)

287
287
286
286
285
285
284
283
281
280
280
282
283
284
285
285
285
285
284
285
285
286
286
285

Monday 14

Waxing Crescent 21%

12:04

19:55

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
18 Bad
19 Bad

Sun - Rise: 06:36, Set: 19:15, Transit: 12:55. Moon - Rise: 12:04, Set: 19:55. Civil Dark: 19:49 - 06:02. Nautical Dark: 20:32 - 05:22. Astro Dark: 21:15 - 04:39

Total Clouds (% Sky Obscured)

93
88
100
100
99
98
75
77
94
88
81
92
84
78
73
70
67
66
67
69
66
60
57
53

Low Clouds (% Sky Obscured)

72
48
24
27
26
22
21
19
22
29
22
20
20
22
25
29
36
40
44
48
56
60
57
53

Medium Clouds (% Sky Obscured)

9
54
100
100
97
68
13
8
94
85
74
86
84
78
73
66
52
37
24
11
13
6
0
0

High Clouds (% Sky Obscured)

34
55
89
94
82
95
75
77
75
53
34
71
47
23
15
8
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
8
6
4
6
7
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
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
2
2
18
38
22
42
48
51
54
51
51
64
70
69
68
60
57
51

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
76
81
85
86
85
88
89
90
92
92
86
81
77
72
69
67
63
66
68
69
69
70
69

Pressure (mb)

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

Ozone (du)

284
284
289
287
283
283
283
283
283
284
287
290
293
296
300
302
304
306
310
315
319
324
330
335

Tuesday 15

Waxing Crescent 30%

13:20

20:14

20 Bad
21 Bad
22 OK
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 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:38, Set: 19:12, Transit: 12:55. Moon - Rise: 13:20, Set: 20:14. Civil Dark: 19:46 - 06:04. Nautical Dark: 20:29 - 05:24. Astro Dark: 21:12 - 04:41

Total Clouds (% Sky Obscured)

49
39
31
24
19
32
45
61
73
71
69
68
69
70
79
87
96
77
58
38
56
73
91
96

Low Clouds (% Sky Obscured)

48
33
22
13
1
12
23
35
33
30
29
44
56
68
72
76
80
68
55
38
41
39
39
49

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
3
5
8
9
8
6
3
2
4
6
8
6
3
0
1
2
2
17

High Clouds (% Sky Obscured)

0
0
1
2
3
24
44
60
40
18
0
3
6
7
22
40
55
40
22
0
25
53
80
82

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 (%)

37
16
10
8
0
3
2
0
3
3
2
5
6
6
21
31
37
35
31
25
25
21
12
17

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
15
14
14
11
11
11
11
11
11
10
10
11
11
11
11
15
14
14
15
15
16

Dew Point (°C)

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

Relative Humidity (%)

72
74
75
79
83
87
89
92
92
93
92
93
89
84
79
74
68
62
57
52
48
52
56
62

Pressure (mb)

1015
1016
1017
1017
1017
1017
1018
1018
1018
1018
1019
1019
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

336
337
337
337
337
338
337
337
336
335
334
333
335
336
338
335
332
329
327
325
324
321
319
317

Wednesday 16

Waxing Crescent 39%

14:30

20:39

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: 06:39, Set: 19:10, Transit: 12:55. Moon - Rise: 14:30, Set: 20:39. Civil Dark: 19:44 - 06:06. Nautical Dark: 20:26 - 05:25. Astro Dark: 21:09 - 04:43

Total Clouds (% Sky Obscured)

97
99
96
94
92
91
91
90
90
91
92
92
91
92
91
90
90

Low Clouds (% Sky Obscured)

58
65
58
49
43
45
39
29
23
21
16
16
17
17
17
17
17

Medium Clouds (% Sky Obscured)

30
41
40
41
44
50
56
62
65
67
70
75
81
88
87
86
87

High Clouds (% Sky Obscured)

83
85
67
50
31
24
14
7
4
9
15
20
20
20
19
19
14

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

20
17
20
14
2
2
2
3
3
3
1
1
2
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
14
14
14
13
10
10
11
11
11
11
10
10
10
10
11

Dew Point (°C)

8
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
7

Relative Humidity (%)

66
70
75
76
79
81
83
84
87
86
86
86
79
70
64
60
56

Pressure (mb)

1021
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

315
313
311
310
310
310
310
311
311
311
310
310
308
306
305
305
304

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

Generated: 10/09/26 20:56:46. Forecast: 10/09/26 to 16/09/26. Timezone: UTC+1.00