Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 4

Waning Gibbous 60%

22:24

No Set

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

Sun - Rise: 05:30, Set: 20:44, Transit: 13:06. Moon - Rise: 22:24, Set: No Set. Civil Dark: 21:24 - 04:50. Nautical Dark: 22:18 - 03:58. Astro Dark: 23:29 - 02:47

Total Clouds (% Sky Obscured)

26
42
55
63
74
53
20
20
21
36
53
56
63
64
75
84
80
88
68
74
87
78
60
35

Low Clouds (% Sky Obscured)

7
42
55
63
74
53
15
14
12
23
35
32
39
59
75
84
80
88
68
74
87
78
58
27

Medium Clouds (% Sky Obscured)

26
42
55
63
16
3
1
0
4
4
0
0
0
0
0
1
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

26
42
55
56
2
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 (%)

3
13
4
1
0
0
0
0
0
0
0
0
0
0
0
1
5
14
11
5
7
13
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
12
11
13
13
12
12
12
12
13
14
15
16
16
16
16
15
14
14
14
14
12
9
7

Relative Humidity (%)

36
36
39
43
42
40
43
48
53
60
68
77
85
89
92
90
86
79
76
75
75
58
46
37

Pressure (mb)

1009
1008
1009
1008
1008
1008
1008
1009
1009
1010
1010
1011
1011
1011
1010
1011
1010
1011
1011
1012
1012
1012
1013
1013

Ozone (du)

315
318
318
317
318
318
318
317
317
316
316
317
318
318
318
318
318
319
319
320
320
322
325
325

Wednesday 5

Waning Gibbous 49%

22:42

13:48

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

Sun - Rise: 05:32, Set: 20:43, Transit: 13:06. Moon - Rise: 22:42, Set: 13:48. Civil Dark: 21:22 - 04:52. Nautical Dark: 22:15 - 04:00. Astro Dark: 23:25 - 02:51

Total Clouds (% Sky Obscured)

17
17
23
9
19
20
7
17
8
0
0
0
0
0
0
0
14
28
28
32
58
56
55
52

Low Clouds (% Sky Obscured)

13
14
20
8
19
17
6
11
6
0
0
0
0
0
0
0
10
17
13
14
36
28
27
24

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
6
0
0
0
0
0
0
0
0
0
5
15
17
10
48
55
50

High 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

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
4
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)

17
16
17
17
20
17
16
13
11
11
11
9
8
7
8
8
8
8
9
12
12
13
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
20
19
20
17
17
17
17
16
14
13
12
13
12
11
11
10
11
11
12
13
15
16
16

Dew Point (°C)

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

Relative Humidity (%)

32
28
25
27
33
36
38
44
46
49
55
64
69
66
66
69
71
73
66
59
52
44
38
33

Pressure (mb)

1013
1013
1014
1014
1014
1015
1016
1016
1017
1018
1018
1019
1019
1019
1019
1020
1020
1021
1021
1021
1022
1022
1022
1022

Ozone (du)

327
330
331
330
331
331
332
334
335
335
335
338
340
341
342
344
349
353
352
353
355
357
354
350

Thursday 6

Third Quarter 37%

23:07

15:15

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

Sun - Rise: 05:33, Set: 20:41, Transit: 13:06. Moon - Rise: 23:07, Set: 15:15. Civil Dark: 21:20 - 04:54. Nautical Dark: 22:13 - 04:02. Astro Dark: 23:21 - 02:55

Total Clouds (% Sky Obscured)

60
62
65
74
54
57
40
55
70
44
42
5
25
40
25
15
5
1
3
2
4
13
17
67

Low Clouds (% Sky Obscured)

29
37
30
51
27
41
25
2
2
1
0
0
0
8
0
0
0
0
0
0
0
7
14
22

Medium Clouds (% Sky Obscured)

40
24
27
23
18
7
5
24
11
11
10
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
2
2
7
3
50
25
40
5
25
40
25
15
5
1
3
2
4
4
3
53

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)

11
11
11
10
10
11
10
6
6
7
7
6
5
5
5
4
4
4
4
4
4
5
5
6

Chance of Frost

Temperature (°C)

19
20
21
22
22
22
22
20
18
16
15
14
13
12
11
11
10
10
11
14
17
19
20
22

Feels Like (°C)

16
18
18
18
19
19
18
18
16
14
12
11
12
10
9
8
8
9
10
14
16
18
19
20

Dew Point (°C)

2
2
2
1
0
1
1
2
4
5
6
6
5
4
4
4
4
4
4
4
5
5
5
4

Relative Humidity (%)

30
28
26
25
23
23
24
29
38
48
53
57
57
58
59
61
65
66
59
51
45
40
36
32

Pressure (mb)

1022
1022
1022
1022
1022
1022
1022
1023
1023
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1023

Ozone (du)

348
348
347
340
338
337
336
335
331
329
326
325
325
325
326
325
325
325
326
329
332
336
335
334

Friday 7

Waning Crescent 26%

23:44

16:42

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

Sun - Rise: 05:35, Set: 20:39, Transit: 13:06. Moon - Rise: 23:44, Set: 16:42. Civil Dark: 21:18 - 04:56. Nautical Dark: 22:10 - 04:04. Astro Dark: 23:17 - 02:58

Total Clouds (% Sky Obscured)

67
38
29
36
59
56
75
83
92
64
53
52
57
57
60
62
56
88
98
94
85
80
80
75

Low Clouds (% Sky Obscured)

22
19
19
15
8
0
2
2
8
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
2
3
7
12
16
22
22
21
21
22
20
17
22
26
30
28
27
25
19
16
13

High Clouds (% Sky Obscured)

54
21
12
9
48
30
59
65
76
49
48
36
37
40
43
50
55
85
95
87
73
63
70
60

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
1
1
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
7
7
7
7
7
5
4
5
7
8
8
7
6
5
4
4
3
3
3
4
6
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

30
28
26
25
24
25
26
32
34
36
42
44
48
54
56
59
60
61
53
45
39
34
31
27

Pressure (mb)

1023
1022
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1018
1018
1018
1018
1018
1017
1016

Ozone (du)

337
337
334
331
330
330
329
330
331
334
332
331
329
326
326
324
323
322
321
321
320
320
320
319

Saturday 8

Waning Crescent 16%

00:39

17:59

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 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 05:36, Set: 20:37, Transit: 13:06. Moon - Rise: 00:39, Set: 17:59. Civil Dark: 21:16 - 04:58. Nautical Dark: 22:08 - 04:07. Astro Dark: 23:13 - 03:02

Total Clouds (% Sky Obscured)

77
82
87
90
94
83
84
85
85
85
86
83
85
90
84
60
59
57
60
65
62
63
64
61

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
6
12
19
23
30
31
28
24
22
7
3
3
0
4
5
5
5
5

Medium Clouds (% Sky Obscured)

16
16
15
10
15
13
14
12
13
8
7
6
17
28
35
19
13
17
27
27
23
33
32
25

High Clouds (% Sky Obscured)

56
51
52
68
82
68
64
56
60
60
60
52
56
59
52
48
43
43
37
34
35
24
15
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 (%)

1
1
0
3
1
0
2
3
1
3
6
3
18
20
6
9
8
3
12
18
23
30
36
34

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)

11
11
11
11
10
10
10
8
6
5
5
6
6
5
5
4
4
3
3
3
3
4
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
4
3
1
1
-1
-0
1
1
1
1
0
0
1
2
2
4
5
6
6
4
3
1
-1

Relative Humidity (%)

25
22
19
17
17
16
17
21
25
28
28
28
30
33
36
39
43
46
49
41
34
28
24
20

Pressure (mb)

1015
1015
1014
1014
1013
1013
1013
1013
1013
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

318
318
318
318
318
318
319
321
320
321
322
320
319
320
321
322
322
322
323
323
323
323
323
323

Sunday 9

Waning Crescent 8%

01:53

19:00

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

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)

53
42
31
27
26
27
36
45
58
39
20
0
5
11
16
19
22
27
30
32
34
33
29
28

Low Clouds (% Sky Obscured)

4
4
3
3
5
5
7
9
10
8
4
0
3
6
9
9
8
4
3
4
4
7
7
11

Medium Clouds (% Sky Obscured)

19
8
4
3
2
0
11
19
29
19
10
0
0
0
0
0
1
1
1
0
0
0
0
0

High Clouds (% Sky Obscured)

1
0
0
1
1
2
1
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 (%)

36
27
9
16
11
0
1
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
6
7
8
8
8
9
9
10
11
11
10
10
10
9
8
9
9
10
11
12
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-3
-4
-5
-6
-6
-6
-7
-4
0
4
4
5
5
5
5
5
6
7
8
8
8
8
5
2

Relative Humidity (%)

17
15
13
12
12
12
11
17
24
36
40
46
52
53
55
57
61
64
68
61
56
51
39
29

Pressure (mb)

1013
1013
1013
1012
1012
1012
1012
1013
1013
1014
1014
1014
1014
1015
1015
1015
1016
1016
1017
1017
1018
1018
1018
1018

Ozone (du)

323
323
323
323
322
321
321
320
320
319
319
319
318
318
318
318
318
319
319
320
321
323
323
324

Monday 10

Waning Crescent 2%

03:22

19:42

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

Sun - Rise: 05:40, Set: 20:33, Transit: 13:06. 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)

34
42
50
45
41
37
31
24
17
12
6
0
20
40
64
64
60
53

Low Clouds (% Sky Obscured)

32
37
36
34
31
26
25
24
17
12
6
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

7
13
19
17
17
16
9
6
0
0
0
0
2
4
6
5
4
3

High Clouds (% Sky Obscured)

6
13
28
26
24
23
12
5
0
0
0
0
14
30
45
41
42
39

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

22
22
22
23
22
21
21
19
18
16
15
14
12
12
11
10
11
11

Feels Like (°C)

16
21
20
19
19
19
20
18
17
18
17
15
14
9
10
10
9
9

Dew Point (°C)

-1
-1
-2
-2
-1
1
2
4
6
8
8
8
8
8
8
8
8
8

Relative Humidity (%)

22
21
20
19
22
25
28
37
46
59
65
70
76
79
81
84
81
80

Pressure (mb)

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

Ozone (du)

324
324
324
324
324
323
323
323
323
323
323
322
322
322
321
321
321
320

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

Generated: 04/08/26 13:12:50. Forecast: 04/08/26 to 10/08/26. Timezone: UTC+1.00