Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 17

Waxing Crescent 14%

10:20

22:40

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

Sun - Rise: 05:04, Set: 21:11, Transit: 13:07. Moon - Rise: 10:20, Set: 22:40. Civil Dark: 21:55 - 04:20. Nautical Dark: 22:59 - 03:16. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

23
13
17
20
3
2
15
27
22
28
37
57
66
59
45
29
53
34
32
26
25
30
36
82

Low Clouds (% Sky Obscured)

21
13
17
20
2
0
15
25
19
24
17
25
36
54
45
29
37
34
28
21
18
21
20
41

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
0
0
0
0
19
37

High Clouds (% Sky Obscured)

0
2
0
0
2
2
2
4
5
5
25
53
59
18
0
3
21
0
3
2
3
2
2
24

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
4
1
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
8
8
10
11
10
9
11
10
9
9
8
7
7
8
9
9
10
10
10
10
10
11
11

Chance of Frost

Temperature (°C)

26
26
26
25
24
22
20
18
17
16
15
15
14
13
14
14
15
17
18
19
21
22
22
23

Feels Like (°C)

24
25
25
23
21
21
19
17
16
15
14
14
12
11
12
13
14
14
16
17
19
20
21
21

Dew Point (°C)

7
7
6
4
6
11
14
13
14
14
13
14
13
13
13
12
9
8
6
3
3
5
6
6

Relative Humidity (%)

30
29
27
26
31
49
68
73
82
86
89
95
96
95
95
84
68
57
44
34
30
32
33
32

Pressure (mb)

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

Ozone (du)

340
338
337
338
338
338
335
334
331
329
330
331
331
330
330
331
333
335
336
336
337
337
337
339

Saturday 18

Waxing Crescent 23%

11:39

22:52

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

Sun - Rise: 05:05, Set: 21:09, Transit: 13:07. Moon - Rise: 11:39, Set: 22:52. Civil Dark: 21:54 - 04:21. Nautical Dark: 22:57 - 03:18. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

73
41
96
48
70
65
71
64
48
44
30
3
7
25
37
57
62
63
71
71
68
28
10
9

Low Clouds (% Sky Obscured)

41
30
89
28
47
21
34
28
4
2
0
0
4
2
10
25
27
29
31
28
20
14
10
9

Medium Clouds (% Sky Obscured)

28
14
20
18
19
38
32
38
38
34
26
0
0
0
0
0
1
3
16
26
12
0
0
0

High Clouds (% Sky Obscured)

2
0
0
0
0
0
0
0
0
0
0
3
3
25
37
42
40
40
47
39
42
24
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)

16
13
14
13
12
12
11
8
6
5
6
7
7
6
7
9
10
10
10
10
10
10
10
9

Chance of Frost

Temperature (°C)

23
23
23
22
20
19
17
16
16
15
14
13
12
11
11
12
14
16
17
19
20
21
22
23

Feels Like (°C)

18
19
19
18
17
15
15
15
15
15
14
12
11
11
8
9
11
13
14
15
16
17
19
20

Dew Point (°C)

9
11
11
12
12
10
11
12
13
13
12
11
11
11
10
10
9
8
5
4
2
1
-0
-1

Relative Humidity (%)

40
47
48
55
57
58
66
74
85
90
89
92
93
95
93
83
73
57
44
36
29
25
23
21

Pressure (mb)

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

Ozone (du)

342
351
360
359
361
361
361
359
355
351
348
345
343
342
342
342
344
345
346
347
348
349
347
345

Sunday 19

Waxing Crescent 32%

12:55

23:03

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

Sun - Rise: 05:07, Set: 21:08, Transit: 13:07. Moon - Rise: 12:55, Set: 23:03. Civil Dark: 21:52 - 04:23. Nautical Dark: 22:55 - 03:21. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

21
24
28
24
2
12
39
54
74
98
100
95
45
8
7
13
10
42
78
74
56
69
70
62

Low Clouds (% Sky Obscured)

19
16
28
24
2
0
0
0
0
0
0
0
0
0
6
7
10
41
64
61
14
62
59
53

Medium Clouds (% Sky Obscured)

0
4
0
0
0
0
0
0
0
0
17
65
36
2
2
2
2
0
2
21
33
2
2
2

High Clouds (% Sky Obscured)

1
3
3
0
0
12
35
46
70
97
100
56
7
5
1
3
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
11
10
8
6
5
4
5
5
5
5
5
6
8
8
10
10
9
9
11
9

Chance of Frost

Temperature (°C)

23
23
23
22
20
18
16
14
13
13
12
12
11
11
11
13
14
16
18
19
20
22
22
22

Feels Like (°C)

21
20
20
19
18
15
13
12
12
11
10
9
9
9
11
12
13
14
15
15
17
18
18
19

Dew Point (°C)

-1
-2
-1
2
3
4
6
7
7
7
5
5
6
7
8
7
5
2
2
4
5
5
6
8

Relative Humidity (%)

20
20
21
26
30
39
50
61
66
66
62
63
70
78
80
67
54
39
35
38
37
33
36
39

Pressure (mb)

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

Ozone (du)

345
345
347
349
352
347
345
345
344
344
343
343
341
339
336
334
334
333
334
335
340
342
337
336

Monday 20

Waxing Crescent 43%

14:11

23:15

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

Sun - Rise: 05:08, Set: 21:07, Transit: 13:07. Moon - Rise: 14:11, Set: 23:15. Civil Dark: 21:51 - 04:24. Nautical Dark: 22:53 - 03:23. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

29
68
27
35
28
31
30
26
20
20
15
13
22
39
52
53
45
22
28
46
61
67
70
78

Low Clouds (% Sky Obscured)

19
41
2
11
12
18
14
8
3
2
1
0
0
4
12
25
30
18
21
31
40
35
33
36

Medium Clouds (% Sky Obscured)

10
19
25
27
28
31
30
26
20
20
15
13
17
24
32
27
18
6
21
37
48
50
48
50

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
4
2
2
2
2
0
0
0
0
0
1

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

Chance of Frost

Temperature (°C)

23
23
22
22
21
19
18
17
16
15
14
14
13
13
14
15
16
18
20
21
22
23
24
25

Feels Like (°C)

21
20
19
20
19
18
17
17
16
16
15
14
13
13
14
14
15
17
20
21
22
23
24
24

Dew Point (°C)

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

Relative Humidity (%)

35
38
41
39
46
55
65
76
83
89
89
90
93
93
95
89
82
68
56
44
37
33
33
32

Pressure (mb)

1027
1027
1027
1027
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1029
1030
1030
1030
1030
1029
1029
1028
1027
1027

Ozone (du)

335
332
331
330
329
328
328
327
326
326
327
326
326
325
326
328
328
327
326
331
332
332
333
332

Tuesday 21

First Quarter 53%

15:27

23:29

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: 05:09, Set: 21:06, Transit: 13:07. Moon - Rise: 15:27, Set: 23:29. Civil Dark: 21:49 - 04:26. Nautical Dark: 22:51 - 03:25. Astro Dark: N/A - 01:23

Total Clouds (% Sky Obscured)

83
78
89
100
100
100
100
100
100
100
99
99
99
99
100
62
67
70
71
74
74
75
76
78

Low Clouds (% Sky Obscured)

44
47
55
54
35
20
24
19
19
16
15
12
27
37
100
62
67
70
71
74
74
75
76
78

Medium Clouds (% Sky Obscured)

44
42
36
40
45
45
66
88
100
92
84
79
83
87
90
58
55
53
40
32
23
29
29
29

High Clouds (% Sky Obscured)

28
50
89
100
100
100
100
100
100
99
98
96
81
59
41
43
18
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
2
1
1
3
2
0
10
12
13
12
9
3

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
7
7
8
7
5
4
5
8
10
9
10
10
10
10
12
12
13
13
14
14
13
13

Chance of Frost

Temperature (°C)

25
25
25
25
24
22
21
20
19
18
17
16
15
15
15
15
16
17
18
19
21
22
22
22

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

30
30
30
31
37
45
51
51
50
54
65
65
69
76
80
76
74
71
68
62
57
52
50
49

Pressure (mb)

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

Ozone (du)

330
331
331
331
330
331
331
331
331
330
331
331
332
333
335
338
341
344
347
349
350
352
350
348

Wednesday 22

Waxing Gibbous 63%

No Rise

23:46

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

Sun - Rise: 05:11, Set: 21:04, Transit: 13:07. Moon - Rise: No Rise, Set: 23:46. Civil Dark: 21:48 - 04:28. Nautical Dark: 22:49 - 03:27. Astro Dark: 00:51 - 01:36

Total Clouds (% Sky Obscured)

78
78
75
61
48
33
32
31
28
33
36
36
38
40
38
41
44
47
45
41
38
33
32
32

Low Clouds (% Sky Obscured)

65
52
39
29
18
6
6
7
6
6
7
8
8
9
17
25
37
47
37
27
16
13
11
9

Medium Clouds (% Sky Obscured)

34
35
39
35
26
16
10
4
0
0
0
0
0
0
0
0
1
1
4
8
11
10
11
9

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
1
2
2
3
4
4
5
4
3
2
1
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 (%)

5
4
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
13
13
13
11
9
7
7
8
9
9
9
10
10
10
10
10
11
11
11
11
10
10
10

Chance of Frost

Temperature (°C)

22
21
21
21
19
17
16
15
14
14
13
13
13
13
13
13
15
16
18
19
21
22
23
24

Feels Like (°C)

19
17
17
16
18
19
19
18
17
16
12
12
12
12
11
10
12
13
12
13
13
13
22
21

Dew Point (°C)

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

Relative Humidity (%)

47
43
40
36
45
56
69
75
80
86
87
89
89
86
82
79
69
62
53
47
41
36
35
34

Pressure (mb)

1020
1020
1020
1020
1020
1021
1021
1022
1022
1022
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1023
1023
1023

Ozone (du)

346
345
344
343
342
342
341
340
339
337
337
336
335
334
333
332
331
330
329
329
329
330
329
329

Thursday 23

Waxing Gibbous 72%

16:41

00:09

16 OK
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 OK
06 OK
07 OK
08 OK
09 OK
10 Good
11 Good
12 Good

Sun - Rise: 05:12, Set: 21:03, Transit: 13:07. Moon - Rise: 16:41, Set: 00:09. Civil Dark: 21:46 - 04:29. Nautical Dark: 22:46 - 03:30. Astro Dark: 00:37 - 01:46

Total Clouds (% Sky Obscured)

41
54
69
64
58
50
57
60
67
65
55
54
47
38
33
25
20
18
16
17
18

Low Clouds (% Sky Obscured)

7
3
1
5
8
14
8
4
0
1
2
3
8
12
15
16
20
18
16
17
18

Medium Clouds (% Sky Obscured)

11
17
23
22
16
10
7
3
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
1
2
3
17
34
53
59
47
40
28
19
14
10
6
3
2
1
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

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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
3
3
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

24
24
23
23
21
19
17
16
15
14
14
13
12
13
13
14
16
18
20
21
22

Feels Like (°C)

21
21
22
22
20
20
20
20
19
18
12
13
13
13
13
13
15
15
15
16
16

Dew Point (°C)

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

Relative Humidity (%)

33
34
37
40
46
55
66
73
79
87
87
89
89
86
84
80
67
57
48
42
37

Pressure (mb)

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

Ozone (du)

329
329
329
330
330
331
331
330
330
329
328
327
326
324
321
319
318
317
316
316
316

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

Generated: 17/07/26 16:11:33. Forecast: 17/07/26 to 23/07/26. Timezone: UTC+1.00