Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 10

Full Moon 100%

21:47

04:52

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

Sun - Rise: 04:56, Set: 21:17, Transit: 13:06. Moon - Rise: 21:47, Set: 04:52. Civil Dark: 22:03 - 04:10. Nautical Dark: 23:12 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

3
0
0
0
33
49
52
93
44
27
17
27
36
44
32
69
96
100
35
13
5
0
3
0

Low Clouds (% Sky Obscured)

0
0
0
0
28
27
30
26
29
23
12
23
33
38
30
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
0
0
0
1
3
5
1
1
1
1
0
4
1
0
0
0
0
0

High Clouds (% Sky Obscured)

3
0
0
0
20
16
17
45
14
5
17
27
36
44
29
69
67
93
35
13
5
0
3
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)

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

Chance of Frost

Temperature (°C)

16
18
20
22
24
25
26
27
28
29
29
29
29
28
27
24
22
20
20
19
18
18
17
17

Feels Like (°C)

16
19
22
23
24
25
27
28
29
29
29
27
27
28
26
23
20
21
19
19
18
18
17
18

Dew Point (°C)

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

Relative Humidity (%)

85
76
68
60
55
49
44
40
37
36
35
34
36
38
47
60
69
77
76
77
75
73
74
76

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021
1021
1021
1021
1021
1021
1022
1022
1022
1021
1021
1021
1021
1021

Ozone (du)

330
331
330
330
331
331
330
329
329
330
330
330
330
330
328
327
328
329
329
331
332
333
333
332

Friday 11

Waning Gibbous 98%

22:16

No Set

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

Sun - Rise: 04:57, Set: 21:16, Transit: 13:06. Moon - Rise: 22:16, Set: No Set. Civil Dark: 22:02 - 04:11. Nautical Dark: 23:10 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

8
17
7
43
18
8
26
47
46
54
55
56
46
16
20
18
17
6
21
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
24
46
45
54
54
46
46
16
20
18
17
6
21
0
0
0
0
0

Medium Clouds (% Sky Obscured)

3
1
3
3
3
3
1
3
3
3
1
12
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

7
9
3
25
10
4
9
3
3
0
0
2
1
2
2
2
2
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)

4
4
5
6
6
5
5
4
4
4
5
5
6
10
11
10
9
6
5
4
4
4
4
4

Chance of Frost

Temperature (°C)

17
19
21
23
24
26
28
29
29
30
30
30
30
28
26
23
21
20
19
18
17
16
16
15

Feels Like (°C)

18
20
22
24
25
27
29
30
31
31
31
31
30
27
25
23
21
21
20
19
18
18
17
16

Dew Point (°C)

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

Relative Humidity (%)

76
68
61
54
50
45
40
37
34
32
31
31
31
35
48
55
64
69
71
73
76
79
80
85

Pressure (mb)

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

Ozone (du)

333
332
329
328
327
325
324
323
324
324
325
324
324
324
324
323
321
321
321
321
322
323
324
323

Saturday 12

Waning Gibbous 95%

22:36

06:13

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

Sun - Rise: 04:58, Set: 21:15, Transit: 13:06. Moon - Rise: 22:36, Set: 06:13. Civil Dark: 22:01 - 04:13. Nautical Dark: 23:08 - 03:06. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
0
0
0
18
25
13
24
29
20
29
40
44
61
38
0
2
1
2
1
0
0
20
43

Low Clouds (% Sky Obscured)

0
0
0
0
18
25
13
24
29
20
29
40
44
34
5
0
0
0
0
0
0
0
16
30

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
4
9

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
2
5
49
38
0
2
1
1
1
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)

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

Chance of Frost

Temperature (°C)

15
17
19
21
23
24
25
26
27
28
28
28
27
25
24
21
19
17
16
15
15
14
14
14

Feels Like (°C)

17
18
20
22
23
24
25
26
27
27
27
26
25
24
21
19
19
18
16
15
14
14
14
14

Dew Point (°C)

12
12
12
11
11
10
10
9
9
9
9
9
10
12
11
10
10
10
10
10
9
9
9
11

Relative Humidity (%)

82
71
61
54
47
41
36
33
31
30
29
30
36
42
45
48
55
62
68
69
69
73
75
80

Pressure (mb)

1018
1018
1018
1018
1018
1017
1017
1016
1016
1015
1015
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1015
1015
1015

Ozone (du)

325
325
325
325
325
327
328
329
332
333
333
333
334
335
336
338
341
342
341
341
340
341
340
340

Sunday 13

Waning Gibbous 89%

22:51

07:37

06 Bad
07 Bad
08 Bad
09 OK
10 OK
11 OK
12 OK
13 Bad
14 Bad
15 Bad
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 OK

Sun - Rise: 04:59, Set: 21:14, Transit: 13:06. Moon - Rise: 22:51, Set: 07:37. Civil Dark: 22:00 - 04:14. Nautical Dark: 23:07 - 03:08. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

60
57
50
44
48
48
43
49
55
77
87
92
57
94
97
96
100
100
100
100
100
100
81
34

Low Clouds (% Sky Obscured)

44
39
31
23
33
47
43
49
46
36
35
27
25
31
37
41
28
13
0
0
0
1
0
0

Medium Clouds (% Sky Obscured)

15
24
32
38
36
34
29
36
40
32
26
22
23
25
32
25
20
10
2
11
67
90
60
8

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
12
20
1
53
80
94
100
100
100
100
100
100
80
34

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)

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

Chance of Frost

Temperature (°C)

14
16
18
20
22
23
24
26
27
27
28
27
27
27
26
24
22
21
20
19
18
18
18
18

Feels Like (°C)

14
15
18
20
23
24
26
27
28
28
26
24
26
27
25
23
21
19
19
18
17
18
17
17

Dew Point (°C)

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

Relative Humidity (%)

82
75
69
59
54
49
44
39
35
32
35
40
39
38
43
50
58
69
77
76
75
73
73
77

Pressure (mb)

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

Ozone (du)

339
336
335
336
335
335
334
332
329
327
322
320
319
319
319
320
321
323
326
327
331
334
337
337

Monday 14

Waning Gibbous 80%

23:04

09:00

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

Sun - Rise: 05:00, Set: 21:13, Transit: 13:06. Moon - Rise: 23:04, Set: 09:00. Civil Dark: 21:59 - 04:16. Nautical Dark: 23:05 - 03:10. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

19
36
52
62
69
80
91
70
52
38
52
71
85
51
58
75
96
100
100
67
33
0
33
67

Low Clouds (% Sky Obscured)

0
14
31
46
37
26
15
18
22
26
34
41
49
38
43
48
47
47
46
31
15
0
0
0

Medium Clouds (% Sky Obscured)

0
11
21
24
29
37
42
32
22
14
52
16
0
39
23
15
12
9
5
4
2
0
0
0

High Clouds (% Sky Obscured)

19
16
8
0
30
57
86
57
28
0
16
35
55
22
47
75
82
88
90
60
30
0
28
50

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
9
6
0
1
1
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
7
9
10
10
10
10
11
12
12
14
16
15
13
12
12
11
10
10
9
8
7
8

Chance of Frost

Temperature (°C)

18
19
20
22
23
25
26
27
27
28
28
26
25
24
24
22
21
19
18
17
15
14
13
13

Feels Like (°C)

20
20
22
23
24
25
26
27
27
26
25
23
20
21
22
22
22
21
20
20
12
12
13
12

Dew Point (°C)

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

Relative Humidity (%)

77
67
59
51
44
38
32
29
26
25
24
29
35
32
40
48
58
58
60
61
68
76
86
83

Pressure (mb)

1013
1013
1013
1013
1014
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1015
1016
1016
1017
1017
1018
1018
1019
1019

Ozone (du)

330
328
328
327
327
327
327
329
330
328
326
324
326
328
330
332
334
338
342
345
348
350
353
351

Tuesday 15

Waning Gibbous 70%

23:16

10:23

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

Sun - Rise: 05:02, Set: 21:12, Transit: 13:06. Moon - Rise: 23:16, Set: 10:23. Civil Dark: 21:57 - 04:17. Nautical Dark: 23:03 - 03:12. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
81
63
49
61
74
88
80
72
65
61
60
57
54
52
51
43
36
27
32
37
39
40
40

Low Clouds (% Sky Obscured)

0
0
0
0
2
4
7
6
6
4
0
0
0
0
0
0
0
0
0
1
4
3
3
0

Medium Clouds (% Sky Obscured)

0
0
0
0
3
6
9
20
28
40
45
43
40
36
32
24
29
36
27
32
37
39
35
23

High Clouds (% Sky Obscured)

65
47
39
36
34
25
11
12
16
16
19
26
28
31
47
37
37
36
27
32
37
39
40
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
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
10
10
11
12
12
12
13
12
11
10
10
10
11
10
8
7
7
6
5
5
4
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
79
65
54
45
43
41
40
38
37
36
34
31
30
34
39
46
50
53
58
59
62
66
67

Pressure (mb)

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

Ozone (du)

350
348
344
341
338
337
337
337
337
336
335
332
329
327
324
322
319
317
316
314
313
312
311
309

Wednesday 16

Waning Gibbous 67%

23:27

11:46

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 OK
21 OK
22 OK
23 Good
00 Good

Sun - Rise: 05:03, Set: 21:11, Transit: 13:07. Moon - Rise: 23:27, Set: 11:46. Civil Dark: 21:56 - 04:19. Nautical Dark: 23:01 - 03:14. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

40
42
32
32
51
70
89
75
65
69
80
82
81
65
45
28
19
11
2

Low Clouds (% Sky Obscured)

3
6
7
7
18
29
38
39
40
43
51
57
63
52
42
28
19
10
0

Medium Clouds (% Sky Obscured)

9
7
4
2
16
31
40
22
12
4
3
2
2
1
0
0
0
0
0

High Clouds (% Sky Obscured)

40
40
27
30
45
59
74
56
41
25
13
7
5
3
2
0
0
1
1

ISS Passover

Visibility (miles)

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

Precipitation Type

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
1
1
5
8
9
12
11
6
4
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
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
14
14
15
16
17
17
23
23
23
22
23
22
22
22
22
21
21

Dew Point (°C)

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

Relative Humidity (%)

67
67
65
62
60
56
53
50
49
48
48
48
49
51
56
63
71
72
76

Pressure (mb)

1022
1022
1022
1022
1022
1022
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021

Ozone (du)

308
307
307
307
306
306
305
305
303
302
301
301
300
300
300
301
302
301
301

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

Generated: 10/07/25 06:45:59. Forecast: 10/07/25 to 16/07/25. Timezone: UTC+1.00