Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 28

Waxing Gibbous 98%

20:58

02:43

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

Sun - Rise: 04:44, Set: 21:23, Transit: 13:04. Moon - Rise: 20:58, Set: 02:43. Civil Dark: 22:11 - 03:56. Nautical Dark: 23:27 - 02:41. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

15
21
27
44
19
34
52
90
81
84
64
93
98
100
100
100
100
99
100
92
70
0
0
0

Low Clouds (% Sky Obscured)

15
21
27
36
19
34
52
81
67
66
40
81
73
69
37
48
43
39
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

15
21
25
22
0
0
0
29
27
39
38
65
96
67
100
100
96
95
55
40
3
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
0
19
28
45
8
95
66
99
83
45
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 (%)

15
7
1
0
0
0
0
0
3
0
0
1
2
0
3
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
7
8
8
9
10
10
12
12
12
12
14
14
13
12
14
14
13
13
13
12
10
10
10

Chance of Frost

Temperature (°C)

20
19
19
19
19
18
17
18
19
20
21
22
23
23
23
24
23
23
22
21
20
18
17
15

Feels Like (°C)

21
20
19
20
19
18
17
17
17
18
18
19
19
20
20
20
19
19
18
18
16
16
15
13

Dew Point (°C)

16
16
16
17
16
16
16
16
17
16
14
11
12
14
13
11
10
9
9
9
9
8
8
8

Relative Humidity (%)

78
82
82
85
85
89
90
88
84
77
61
51
49
55
50
44
42
41
42
44
49
51
57
62

Pressure (mb)

1015
1014
1015
1015
1015
1015
1016
1016
1017
1017
1017
1018
1018
1018
1018
1018
1019
1019
1019
1020
1021
1022
1023
1023

Ozone (du)

337
328
322
319
317
317
319
321
323
327
329
335
338
336
333
329
329
327
325
325
328
337
351
358

Monday 29

Waxing Gibbous 99%

21:44

03:30

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

Sun - Rise: 04:45, Set: 21:23, Transit: 13:04. Moon - Rise: 21:44, Set: 03:30. Civil Dark: 22:11 - 03:57. Nautical Dark: 23:26 - 02:42. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

2
19
3
26
68
78
44
46
26
40
98
95
98
95
96
92
73
11
56
100
86
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
23
32
9
16
7
0
0
12
0
0
0
0
8
17
4
17

Medium Clouds (% Sky Obscured)

0
0
0
2
40
67
19
46
7
14
1
0
75
93
95
85
73
11
13
20
17
19
39
45

High Clouds (% Sky Obscured)

2
19
3
26
30
54
21
0
0
4
97
90
75
56
55
9
0
0
48
100
68
100
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
1
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)

10
8
7
7
7
6
6
7
7
8
8
7
7
7
6
6
6
7
6
5
4
3
3
3

Chance of Frost

Temperature (°C)

14
13
13
12
11
11
12
14
16
18
19
21
22
23
23
23
24
24
24
23
22
21
19
18

Feels Like (°C)

12
12
10
11
9
8
9
13
14
17
18
18
19
20
21
21
21
21
23
22
21
19
17
17

Dew Point (°C)

9
9
10
10
9
9
9
9
9
9
8
8
8
8
8
8
8
8
8
8
10
10
8
8

Relative Humidity (%)

69
76
81
87
87
85
83
74
66
57
49
45
41
38
36
36
35
35
36
37
46
49
50
52

Pressure (mb)

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

Ozone (du)

351
347
346
343
345
345
345
345
344
342
341
339
338
338
340
348
344
341
339
338
338
336
334
335

Tuesday 30

Full Moon 100%

22:18

04:30

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 04:46, Set: 21:23, Transit: 13:04. Moon - Rise: 22:18, Set: 04:30. Civil Dark: 22:10 - 03:58. Nautical Dark: 23:25 - 02:43. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
83
95
93
93
96
100
100
100
85
95
94
92
89
86
82
63
80
81
85
71
83
82

Low Clouds (% Sky Obscured)

24
33
10
11
8
22
37
43
53
68
57
27
67
40
46
33
56
50
68
69
74
67
71
65

Medium Clouds (% Sky Obscured)

87
100
65
90
89
86
82
73
95
79
51
42
25
65
69
68
46
16
13
9
4
0
0
0

High Clouds (% Sky Obscured)

100
100
39
3
45
55
82
100
100
76
57
51
49
43
41
35
30
3
2
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
46
74
5
0
0
0
0
0
0
0
0
0
2
5
10
16
20
26
31
28
18
10
4

Precipitation Amount (mm)

0
0
0.4
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
2
4
3
2
1
3
5
7
8
8
8
9
11
13
12
13
13
11
9
7
7
10
9

Chance of Frost

Temperature (°C)

17
17
16
15
15
14
14
16
17
17
18
19
20
21
22
22
22
22
21
20
19
19
18
17

Feels Like (°C)

16
16
15
15
14
14
14
14
15
15
15
17
17
17
17
18
18
18
18
18
18
17
16
15

Dew Point (°C)

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

Relative Humidity (%)

55
57
59
62
66
66
64
63
59
51
47
41
34
31
32
33
34
41
43
48
54
55
69
70

Pressure (mb)

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

Ozone (du)

336
337
341
343
345
350
351
353
355
357
355
351
348
347
348
350
352
355
359
362
361
364
366
370

Wednesday 1

Waning Gibbous 99%

22:43

05:39

00 Bad
01 Good
02 Good
03 OK
04 OK
05 Bad
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 OK
20 OK
21 OK
22 OK
23 Good

Sun - Rise: 04:46, Set: 21:22, Transit: 13:04. Moon - Rise: 22:43, Set: 05:39. Civil Dark: 22:10 - 03:59. Nautical Dark: 23:24 - 02:44. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

83
12
15
23
33
42
51
58
57
63
69
93
94
88
82
76
73
70
62
48
41
35
21
9

Low Clouds (% Sky Obscured)

59
12
15
23
33
42
45
49
54
58
59
75
75
69
63
60
55
51
38
18
4
0
0
0

Medium Clouds (% Sky Obscured)

0
3
6
11
11
12
13
30
49
63
56
53
45
40
31
27
26
27
29
33
38
35
21
9

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
2
12
1
2
1
0
0
0
0
1
5
3
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
1
4
1
2
1
3
5
12
1
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
10
12
13
13
13
13
13
12
11
10
10
10
11
11
12
12
12
12
12
13
13
13
12

Relative Humidity (%)

69
72
86
92
92
92
90
81
72
63
55
51
50
51
48
49
50
49
49
49
56
66
70
71

Pressure (mb)

1021
1021
1021
1021
1021
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025

Ozone (du)

370
369
367
366
364
362
361
364
362
355
352
348
344
341
336
331
328
326
323
320
318
317
318
321

Thursday 2

Waning Gibbous 96%

23:02

06:53

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

Sun - Rise: 04:47, Set: 21:22, Transit: 13:05. Moon - Rise: 23:02, Set: 06:53. Civil Dark: 22:10 - 04:00. Nautical Dark: 23:23 - 02:46. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
0
0
2
17
36
54
54
62
71
77
84
91
75
60
42
38
37
33
22
12
0
1
2

Low Clouds (% Sky Obscured)

0
0
0
0
14
25
34
37
47
59
68
78
89
66
42
22
21
18
16
11
5
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
11
22
32
0
0
0
11
24
32
28
18
7
5
3
1
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
2
0
0
0
2
3
3
3
3
2
1
1
1
1
1
1
1
1
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
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
4
3
0
7
10
14
13
11
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
5
5
6
6
6
7
8
11
11
11
11
11
11
12
13
14
14
14
14
12
11
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
16
15
15
14
14
14
15
15
15
15
15
15
15
19
19
19
20
21
22
18
17
17
16

Dew Point (°C)

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

Relative Humidity (%)

72
73
76
83
89
86
75
66
70
72
76
70
64
60
49
41
33
34
36
37
42
49
57
62

Pressure (mb)

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

Ozone (du)

321
322
322
321
318
318
319
317
317
317
316
316
317
317
318
319
321
326
332
338
338
338
338
339

Friday 3

Waning Gibbous 91%

23:16

08:09

00 Good
01 Good
02 Good
03 Good
04 Good
05 OK
06 OK
07 OK
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 OK
21 OK
22 OK
23 OK

Sun - Rise: 04:48, Set: 21:22, Transit: 13:05. Moon - Rise: 23:16, Set: 08:09. Civil Dark: 22:09 - 04:00. Nautical Dark: 23:22 - 02:47. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

2
4
5
6
12
19
29
44
59
74
76
75
74
78
83
89
87
89
92
69
46
21
23
24

Low Clouds (% Sky Obscured)

0
0
0
0
1
2
5
6
8
10
9
7
5
5
5
5
7
6
8
6
4
3
2
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
5
13
19
13
10
6
4
3
2
1
1
0
3
7

High Clouds (% Sky Obscured)

1
3
4
5
9
14
21
35
50
73
69
65
61
68
75
81
76
72
67
47
29
9
8
8

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)

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

Chance of Frost

Temperature (°C)

14
13
12
12
11
12
13
13
15
17
18
19
21
22
23
23
24
24
24
23
21
19
17
16

Feels Like (°C)

15
15
10
11
11
11
11
10
12
12
13
13
13
14
21
20
20
20
20
21
21
20
20
20

Dew Point (°C)

8
9
9
9
9
9
9
9
8
8
8
7
6
6
6
5
6
6
5
5
5
6
6
6

Relative Humidity (%)

67
74
77
83
87
83
77
74
65
57
50
44
38
34
33
31
30
30
30
31
35
40
46
49

Pressure (mb)

1027
1028
1028
1029
1029
1030
1030
1030
1031
1031
1031
1031
1031
1031
1030
1030
1030
1029
1029
1029
1029
1030
1030
1030

Ozone (du)

339
340
339
339
338
337
336
334
334
333
332
331
331
330
330
330
330
330
330
331
330
329
329
327

Saturday 4

Waning Gibbous 85%

23:28

09:25

Sun - Rise: 04:49, Set: 21:21, Transit: 13:05. Moon - Rise: 23:28, Set: 09:25. Civil Dark: 22:08 - 04:01. Nautical Dark: 23:21 - 02:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 27/06/26 23:26:03. Forecast: 28/06/26 to 04/07/26. Timezone: UTC+1.00