Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 9

Waning Crescent 8%

01:53

19:00

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

Sun - Rise: 05:38, Set: 20:35, Transit: 13:06. Moon - Rise: 01:53, Set: 19:00. Civil Dark: 21:14 - 04:59. Nautical Dark: 22:05 - 04:09. Astro Dark: 23:10 - 03:05

Total Clouds (% Sky Obscured)

31
13
18
66
100
90
25
13
8
7
10
33
55
68
70
55
85
80
91
96
88
99
100
100

Low Clouds (% Sky Obscured)

0
0
1
0
0
0
0
0
0
0
0
0
0
19
19
25
19
31
24
21
21
19
19
14

Medium Clouds (% Sky Obscured)

5
13
3
3
10
2
6
7
3
2
0
22
36
40
33
29
34
21
25
18
16
17
10
38

High Clouds (% Sky Obscured)

4
3
7
59
100
86
20
8
3
3
9
7
7
7
13
3
48
64
86
94
65
98
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)

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

Chance of Frost

Temperature (°C)

29
30
29
28
26
24
22
21
19
18
16
15
15
15
15
16
18
19
20
22
23
24
25
25

Feels Like (°C)

27
29
27
24
23
20
19
18
17
17
16
15
15
14
15
15
16
17
18
19
20
20
21
22

Dew Point (°C)

5
4
4
5
8
8
8
6
6
8
9
9
10
11
12
13
11
8
7
5
3
2
1
1

Relative Humidity (%)

20
19
19
22
30
36
40
38
44
51
60
67
71
78
84
81
63
48
41
34
27
23
21
20

Pressure (mb)

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

Ozone (du)

320
319
318
318
318
318
319
319
316
312
310
309
310
308
308
307
306
305
305
306
307
308
308
309

Monday 10

Waning Crescent 2%

03:22

19:42

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

Sun - Rise: 05:40, Set: 20:33, Transit: 13:05. Moon - Rise: 03:22, Set: 19:42. Civil Dark: 21:12 - 05:01. Nautical Dark: 22:02 - 04:11. Astro Dark: 23:06 - 03:09

Total Clouds (% Sky Obscured)

100
78
91
51
77
72
96
94
18
29
19
18
21
26
33
34
42
37
34
27
30
33
29
52

Low Clouds (% Sky Obscured)

20
17
18
15
21
19
16
14
7
11
12
10
13
14
15
19
28
26
25
18
18
18
14
3

Medium Clouds (% Sky Obscured)

40
9
4
10
3
3
2
37
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
47
91
29
77
71
96
60
7
16
2
3
4
9
17
6
6
2
2
4
6
10
12
48

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)

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

Chance of Frost

Temperature (°C)

25
25
25
24
23
19
17
17
16
15
15
14
14
14
13
15
17
20
22
23
24
25
26
26

Feels Like (°C)

22
22
22
22
21
17
16
15
14
16
14
14
14
14
14
14
17
19
20
22
23
23
24
24

Dew Point (°C)

1
1
1
2
12
12
12
12
12
12
12
12
12
12
12
11
11
10
10
9
9
8
8
8

Relative Humidity (%)

20
20
20
23
51
65
70
74
78
80
82
84
87
87
89
79
67
55
46
41
37
33
32
31

Pressure (mb)

1019
1019
1020
1020
1020
1021
1022
1023
1023
1023
1023
1024
1024
1024
1024
1025
1025
1025
1025
1025
1024
1024
1024
1024

Ozone (du)

309
310
312
312
312
311
309
310
311
312
312
312
312
311
311
311
310
309
310
312
313
313
313
312

Tuesday 11

Waning Crescent 0%

04:55

20:10

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

Sun - Rise: 05:41, Set: 20:31, Transit: 13:05. Moon - Rise: 04:55, Set: 20:10. Civil Dark: 21:10 - 05:03. Nautical Dark: 22:00 - 04:13. Astro Dark: 23:02 - 03:12

Total Clouds (% Sky Obscured)

9
47
58
64
64
64
69
37
16
47
46
41
12
6
2
8
63
22
12
9
7
4
11
5

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
15
16
19
7
0
0
0
0
0
0
0
0
0
0
0

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
0
0

High Clouds (% Sky Obscured)

7
47
58
64
64
64
67
35
16
35
34
28
4
5
2
7
57
21
11
9
7
4
11
5

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)

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

Chance of Frost

Temperature (°C)

26
25
24
22
20
18
16
16
15
15
15
15
14
14
14
16
18
21
23
26
28
29
30
31

Feels Like (°C)

23
22
22
20
18
17
16
15
14
14
13
13
13
14
14
15
17
19
22
24
25
27
28
28

Dew Point (°C)

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

Relative Humidity (%)

31
32
34
37
46
59
71
78
80
83
83
83
83
84
80
68
50
39
30
25
21
19
18
17

Pressure (mb)

1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1024
1024
1024
1024
1023
1023
1023
1022
1022

Ozone (du)

311
310
310
310
310
309
309
308
307
307
308
308
309
309
309
309
308
307
307
306
306
306
306
307

Wednesday 12

New Moon 1%

06:26

20:30

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

Sun - Rise: 05:43, Set: 20:29, Transit: 13:05. Moon - Rise: 06:26, Set: 20:30. Civil Dark: 21:08 - 05:05. Nautical Dark: 21:57 - 04:16. Astro Dark: 22:59 - 03:15

Total Clouds (% Sky Obscured)

25
42
57
36
20
2
1
1
0
0
0
0
0
0
0
0
0
0
10
18
24
25
27
29

Low 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
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
2
1
1
0
0
0
0
0
0
0
0
0
0
6
12
18
20
21
22

High Clouds (% Sky Obscured)

23
42
52
33
17
0
0
0
0
0
0
0
0
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
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
10
10
10
8
8
7
7
6
5
4
4
4
4
4
5
5
6
7
8
8
9
10

Chance of Frost

Temperature (°C)

31
30
30
28
25
23
20
19
18
18
17
17
17
17
17
18
21
25
28
31
33
34
35
36

Feels Like (°C)

29
28
27
26
24
21
19
18
18
17
18
18
18
18
18
19
21
25
28
29
31
33
33
33

Dew Point (°C)

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

Relative Humidity (%)

17
17
18
20
28
36
42
49
53
56
59
61
62
61
58
51
38
28
22
18
15
13
12
12

Pressure (mb)

1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1021
1021
1021
1020
1020
1020
1020
1020
1020
1019
1019
1018
1018
1017

Ozone (du)

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

Thursday 13

Waxing Crescent 4%

07:52

20:45

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

Sun - Rise: 05:44, Set: 20:27, Transit: 13:05. Moon - Rise: 07:52, Set: 20:45. Civil Dark: 21:06 - 05:07. Nautical Dark: 21:55 - 04:18. Astro Dark: 22:55 - 03:19

Total Clouds (% Sky Obscured)

24
15
6
13
19
26
22
15
7
15
25
34
39
44
47
46
47
44
44
41
47
60
65
69

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
3
6
9
2
4
5
3
4
4
8
8
10

Medium Clouds (% Sky Obscured)

14
9
4
3
1
0
0
0
0
0
0
0
6
11
17
33
32
30
30
26
26
26
28
35

High Clouds (% Sky Obscured)

0
0
0
8
17
26
19
13
5
11
16
24
23
22
18
0
0
0
1
1
2
4
4
6

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
1
0
1
2
3
8
10
12

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
12
12
11
10
8
7
5
5
5
4
3
4
3
4
4
5
6
6
6
6
6
6
7

Chance of Frost

Temperature (°C)

36
35
34
33
30
27
25
24
23
23
22
22
21
21
21
22
24
26
28
29
30
32
32
33

Feels Like (°C)

33
32
31
30
28
26
24
24
23
23
23
23
22
22
21
22
22
23
23
24
25
25
33
32

Dew Point (°C)

4
3
4
5
5
7
7
8
7
7
6
5
4
4
3
3
4
5
6
6
6
6
6
6

Relative Humidity (%)

13
13
14
16
20
28
32
34
35
35
34
34
32
32
32
30
28
26
24
22
21
19
19
18

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1016
1016
1016
1015
1015
1014
1014
1013

Ozone (du)

302
302
301
302
302
302
302
302
302
301
302
302
302
302
301
301
300
300
299
298
297
297
297
297

Friday 14

Waxing Crescent 10%

09:14

20:58

16 Bad
17 Bad
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

Sun - Rise: 05:46, Set: 20:25, Transit: 13:05. Moon - Rise: 09:14, Set: 20:58. Civil Dark: 21:03 - 05:08. Nautical Dark: 21:52 - 04:20. Astro Dark: 22:51 - 03:22

Total Clouds (% Sky Obscured)

68
67
67
58
54
63
67
67
67
70
72
63
57
61
67
74
79
83
88
94
100
100
100
100

Low Clouds (% Sky Obscured)

5
4
2
1
1
0
0
0
0
2
4
10
13
20
28
30
36
36
30
20
13
8
4
1

Medium Clouds (% Sky Obscured)

31
24
19
15
15
16
21
27
30
41
57
63
57
61
67
74
75
70
70
65
65
72
80
84

High Clouds (% Sky Obscured)

5
6
3
4
4
5
5
5
20
30
40
50
50
51
56
63
67
75
83
92
100
100
99
99

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
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 (%)

14
12
3
6
5
2
7
12
12
20
22
16
13
17
20
23
24
21
25
32
41
37
29
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)

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

Chance of Frost

Temperature (°C)

33
32
32
31
28
26
23
22
20
18
18
17
17
17
17
17
18
19
20
21
22
23
23
23

Feels Like (°C)

32
32
33
32
28
27
27
26
24
23
15
15
15
15
15
16
15
16
17
18
19
20
21
21

Dew Point (°C)

5
6
6
6
6
7
7
7
8
8
8
8
8
9
10
11
11
11
11
13
14
15
14
13

Relative Humidity (%)

17
18
19
20
24
29
35
39
45
52
52
55
58
61
65
69
65
60
57
59
59
60
55
51

Pressure (mb)

1013
1013
1012
1012
1013
1013
1014
1014
1014
1015
1015
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

297
297
298
298
298
298
298
298
298
298
298
299
300
300
300
300
301
302
303
304
306
308
308
309

Saturday 15

Waxing Crescent 18%

10:34

21:10

16 Bad
17 Bad
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: 05:48, Set: 20:23, Transit: 13:05. Moon - Rise: 10:34, Set: 21:10. Civil Dark: 21:01 - 05:10. Nautical Dark: 21:49 - 04:22. Astro Dark: 22:48 - 03:25

Total Clouds (% Sky Obscured)

90
81
69
75
80
82
79
80
81
78
73
65
76
85
98
93
88
83
85
86
87

Low Clouds (% Sky Obscured)

8
14
24
16
8
0
9
18
27
33
37
35
30
35
35
45
45
45
45
45
50

Medium Clouds (% Sky Obscured)

63
40
18
14
10
6
6
6
7
10
12
13
17
23
24
21
22
18
20
21
22

High Clouds (% Sky Obscured)

78
50
10
33
56
78
79
79
75
47
22
1
8
14
18
18
15
14
14
13
16

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

Fog (%)

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

Precipitation Probability (%)

12
8
1
5
4
1
8
13
15
23
27
31
36
35
28
33
28
14
20
25
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
23
22
22
20
19
17
16
15
15
14
14
13
13
13
13
15
16
17
18
20

Feels Like (°C)

20
21
22
23
18
18
17
16
15
14
12
12
12
12
12
12
13
14
16
17
19

Dew Point (°C)

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

Relative Humidity (%)

48
51
54
58
65
73
83
82
82
80
83
84
87
87
87
90
87
86
83
83
85

Pressure (mb)

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

Ozone (du)

309
310
311
312
314
316
318
319
320
322
323
323
324
325
325
326
325
324
324
324
324

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

Generated: 09/08/26 16:01:23. Forecast: 09/08/26 to 15/08/26. Timezone: UTC+1.00