Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 13

Waning Crescent 0%

04:23

21:09

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

Sun - Rise: 04:59, Set: 21:15, Transit: 13:06. Moon - Rise: 04:23, Set: 21:09. Civil Dark: 22:00 - 04:14. Nautical Dark: 23:07 - 03:07. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

40
35
32
33
28
26
53
64
72
76
83
86
88
90
92
94
92
67
66
39
42
7
13
16

Low Clouds (% Sky Obscured)

32
30
30
29
28
26
26
29
37
41
53
64
76
88
90
77
71
48
47
33
35
5
13
16

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)

0
0
0
0
0
0
38
50
50
55
55
60
50
55
50
50
45
2
3
2
2
2
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
4
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)

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

Chance of Frost

Temperature (°C)

23
24
24
25
24
23
22
20
19
17
16
16
16
16
16
16
16
17
19
21
23
25
27
29

Feels Like (°C)

19
20
21
22
21
20
19
17
16
14
13
12
13
13
12
13
13
14
17
19
21
23
25
27

Dew Point (°C)

4
4
5
7
8
9
12
13
14
15
15
15
15
15
15
15
15
14
14
13
12
12
10
9

Relative Humidity (%)

28
27
27
31
36
41
54
65
73
85
92
95
95
95
93
92
90
83
72
63
51
42
32
27

Pressure (mb)

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

Ozone (du)

344
344
344
345
346
346
344
344
343
342
343
344
344
345
344
344
345
346
347
349
350
349
349
349

Tuesday 14

New Moon 0%

05:57

21:45

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

Sun - Rise: 05:00, Set: 21:14, Transit: 13:06. Moon - Rise: 05:57, Set: 21:45. Civil Dark: 21:59 - 04:15. Nautical Dark: 23:05 - 03:10. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

53
45
48
53
39
0
19
0
0
0
19
53
52
52
50
43
32
28
16
9
11
6
14
22

Low Clouds (% Sky Obscured)

23
25
29
35
34
0
0
0
0
0
19
51
52
52
50
43
32
28
16
9
10
6
14
22

Medium Clouds (% Sky Obscured)

24
22
23
39
24
0
0
0
0
0
0
10
18
5
8
3
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
19
0
0
0
0
2
2
2
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)

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

Chance of Frost

Temperature (°C)

30
30
30
29
29
27
26
24
22
20
18
17
16
16
16
16
16
17
19
20
23
25
27
28

Feels Like (°C)

28
28
28
27
26
25
24
21
20
19
18
16
16
16
16
15
16
17
18
19
21
23
24
26

Dew Point (°C)

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

Relative Humidity (%)

23
22
23
26
29
33
40
46
53
65
75
83
89
92
93
93
89
73
57
46
40
34
28
26

Pressure (mb)

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

Ozone (du)

349
350
351
352
355
354
349
346
342
335
330
326
325
324
323
323
327
331
331
333
333
332
333
334

Wednesday 15

Waxing Crescent 2%

07:29

22:09

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

Sun - Rise: 05:01, Set: 21:13, Transit: 13:06. Moon - Rise: 07:29, Set: 22:09. Civil Dark: 21:58 - 04:17. Nautical Dark: 23:03 - 03:12. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

44
43
46
36
35
28
0
0
0
0
0
0
6
17
20
34
18
26
35
42
46
45
42
46

Low Clouds (% Sky Obscured)

27
24
36
36
20
28
0
0
0
0
0
0
6
17
20
34
18
15
10
4
7
10
12
9

Medium Clouds (% Sky Obscured)

15
15
18
20
22
13
0
0
0
0
0
0
0
0
0
0
0
0
1
1
13
23
30
30

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
2
22
35
42
46
45
42
41

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)

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

Chance of Frost

Temperature (°C)

29
29
29
29
28
27
25
23
21
20
18
17
16
15
15
14
15
16
18
21
23
25
26
28

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

25
25
24
23
23
25
29
37
47
59
72
79
83
85
87
86
83
71
58
48
40
34
29
26

Pressure (mb)

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

Ozone (du)

336
337
339
340
341
342
342
344
345
345
344
343
342
340
339
338
337
337
334
332
332
331
332
332

Thursday 16

Waxing Crescent 7%

08:57

22:27

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

Sun - Rise: 05:03, Set: 21:12, Transit: 13:07. Moon - Rise: 08:57, Set: 22:27. Civil Dark: 21:56 - 04:18. Nautical Dark: 23:01 - 03:14. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

66
57
60
40
50
20
7
0
0
1
9
19
30
42
43
49
53
46
34
23
17
8
0
6

Low Clouds (% Sky Obscured)

7
4
11
8
16
1
0
0
0
0
0
13
26
40
40
41
39
26
13
0
0
0
0
0

Medium Clouds (% Sky Obscured)

30
30
29
24
23
15
7
0
0
0
0
0
1
0
5
11
15
16
16
17
11
6
0
3

High Clouds (% Sky Obscured)

36
14
10
4
2
2
0
0
0
0
9
5
2
2
0
0
1
1
0
0
0
0
0
4

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

Chance of Frost

Temperature (°C)

28
28
29
28
27
27
25
23
21
20
18
17
16
15
14
15
15
16
18
20
22
23
25
26

Feels Like (°C)

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

Dew Point (°C)

6
6
6
6
6
6
7
8
10
11
12
12
13
13
13
13
13
12
10
7
6
5
4
4

Relative Humidity (%)

24
23
24
24
25
27
31
37
47
56
64
73
81
89
92
92
87
75
59
44
36
30
25
23

Pressure (mb)

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

Ozone (du)

332
334
333
334
334
335
337
337
338
338
337
336
337
337
335
333
334
335
336
337
339
341
343
341

Friday 17

Waxing Crescent 14%

10:20

22:40

14 Good
15 Good
16 OK
17 OK
18 Bad
19 OK
20 OK
21 Good
22 Good
23 OK
00 OK
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

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)

8
11
24
34
68
33
20
7
16
29
42
48
55
62
64
70
70
64
64
65
61
57
52
50

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
10
19
25
33
37
41
44
50
49
45
38
31
24
17
11
9

Medium Clouds (% Sky Obscured)

7
11
24
34
50
31
15
0
0
0
2
2
2
2
1
1
0
0
0
0
0
0
0
8

High Clouds (% Sky Obscured)

3
4
8
6
42
11
9
7
4
3
2
1
1
1
1
0
0
0
1
0
2
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)

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

Chance of Frost

Temperature (°C)

27
27
28
27
26
24
22
19
17
16
15
14
14
14
14
14
14
15
16
17
18
20
21
22

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

21
20
19
19
20
24
30
40
55
67
79
90
90
92
93
90
87
84
70
59
49
42
37
33

Pressure (mb)

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

Ozone (du)

340
340
339
336
336
335
334
332
331
330
330
331
331
331
332
331
330
330
329
329
328
330
332
334

Saturday 18

Waxing Crescent 23%

11:39

22:52

14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 OK
21 Good
22 OK
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 OK
12 OK
13 OK

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)

48
51
57
62
67
49
31
13
39
64
85
85
85
80
79
73
67
63
59
60
57
45
38
41

Low Clouds (% Sky Obscured)

11
11
11
10
13
12
6
0
4
9
13
13
11
8
9
10
13
9
9
12
11
9
8
8

Medium Clouds (% Sky Obscured)

15
22
16
12
10
5
3
0
0
0
0
18
33
50
36
30
18
10
5
0
3
6
10
8

High Clouds (% Sky Obscured)

0
0
15
30
38
28
16
7
17
18
25
14
9
8
1
0
0
0
0
0
1
2
3
2

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
19
18
18
18
18
18
17
17
17
17
16
11
12
13
12
12
12
14
13
13
14
14
16

Dew Point (°C)

4
3
2
3
4
4
5
5
5
6
8
9
9
10
10
9
9
9
7
5
2
3
3
3

Relative Humidity (%)

30
27
24
26
29
32
37
42
49
56
67
76
80
84
89
81
76
71
55
43
33
30
28
26

Pressure (mb)

1022
1022
1022
1023
1023
1023
1024
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1026
1026

Ozone (du)

337
339
341
342
342
343
342
341
340
338
336
334
333
331
330
328
327
326
325
325
325
326
326
327

Sunday 19

Waxing Crescent 32%

12:55

23:03

14 OK
15 OK
16 OK
17 OK
18 Good
19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 OK
04 OK
05 OK
06 OK

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)

43
41
29
21
5
4
2
0
0
0
2
7
14
21
21
21
21

Low Clouds (% Sky Obscured)

11
11
7
4
0
0
0
0
0
0
0
0
0
0
4
7
8

Medium Clouds (% Sky Obscured)

4
3
3
4
2
1
1
0
0
0
0
0
0
0
0
1
1

High Clouds (% Sky Obscured)

1
0
0
0
0
1
1
0
0
0
2
7
14
21
17
12
4

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 (%)

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

Wind Speed/Direction (mph)

10
10
10
10
10
10
8
7
7
6
5
3
3
3
3
2
2

Chance of Frost

Temperature (°C)

24
24
25
25
25
25
23
20
18
17
16
16
15
15
14
15
14

Feels Like (°C)

23
22
22
22
23
23
23
22
22
21
20
19
14
14
14
13
13

Dew Point (°C)

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

Relative Humidity (%)

24
23
23
23
25
26
32
41
51
53
56
56
57
58
58
57
56

Pressure (mb)

1026
1026
1025
1025
1025
1025
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

328
328
329
327
325
323
323
322
322
320
319
318
316
314
312
312
311

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

Generated: 13/07/26 14:50:43. Forecast: 13/07/26 to 19/07/26. Timezone: UTC+1.00