Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 5

Waning Gibbous 81%

00:38

09:04

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 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: 04:44, Set: 21:14, Transit: 12:59. Moon - Rise: 00:38, Set: 09:04. Civil Dark: 22:01 - 03:57. Nautical Dark: 23:12 - 02:46. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

43
43
59
51
56
50
61
63
54
49
53
40
63
98
97
100
88
77
42
100
100
100
100
100

Low Clouds (% Sky Obscured)

43
43
54
51
54
37
40
50
54
44
48
38
36
44
29
39
48
55
0
0
0
0
0
9

Medium Clouds (% Sky Obscured)

2
21
14
2
6
31
21
8
4
6
3
0
15
30
24
20
16
13
6
5
75
83
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
2
3
3
4
3
4
6
9
28
3
4
10
40
42
100
100
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
0
0
0
0
0
0
0
0
0
4
1
0
2
5
6
4
16
4
2
0
2
22

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
10
9
10
10
10
10
10
11
10
10
10
10
9
9
11
10
9
10
11
10
8
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
95
95
95
95
93
87
79
66
59
53
50
46
44
49
63
53
56
59
65
64
66
71

Pressure (mb)

1004
1005
1006
1007
1007
1008
1009
1010
1010
1011
1012
1012
1012
1012
1012
1011
1012
1011
1011
1011
1011
1011
1012
1012

Ozone (du)

394
390
385
382
379
377
375
372
372
371
369
367
374
375
370
366
366
367
366
367
369
370
368
370

Saturday 6

Waning Gibbous 72%

00:55

10:19

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 OK
21 OK
22 Bad
23 Bad

Sun - Rise: 04:43, Set: 21:15, Transit: 12:59. Moon - Rise: 00:55, Set: 10:19. Civil Dark: 22:02 - 03:56. Nautical Dark: 23:14 - 02:44. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
98
100
98
96
96
100
100
92
87
100
100
100
100
97
91
90
81
28
10
51
77

Low Clouds (% Sky Obscured)

8
10
34
61
65
64
67
84
86
85
89
71
63
70
88
100
93
79
86
78
28
0
36
53

Medium Clouds (% Sky Obscured)

100
100
87
96
89
94
94
43
97
51
15
77
100
100
85
42
87
63
42
21
0
0
19
25

High Clouds (% Sky Obscured)

100
100
50
30
2
0
21
50
45
70
0
0
70
7
59
0
12
0
0
0
0
1
1
35

ISS Passover

Visibility (miles)

9
9
9
9
9
9
5
9
9
9
6
4
6
9
9
9
9
9
9
7
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

Very Light Rain
None
None
None
None
Very Light Rain
Very Light Rain
None
Light Rain
Light Rain
Light Rain
Very Light Rain
None
Light Rain
Very Light Rain
Very Light Rain
Light Rain
None
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

51
34
30
39
49
63
66
55
95
91
71
67
61
83
75
73
89
71
58
36
13
21
3
0

Precipitation Amount (mm)

0.3
0
0
0
0
0.3
0.3
0
0.6
0.6
0.4
0.3
0
0.5
0.3
0.3
0.5
0
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

8
8
10
11
11
12
14
15
16
15
14
18
19
16
16
12
13
11
10
12
13
10
9
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
7
7
7
6
8
11
11
11
11
12
14
14
14
13
13
13
14
13
12
13
12
11

Relative Humidity (%)

75
77
75
75
76
72
81
92
92
92
87
82
85
89
95
96
93
93
92
86
87
93
93
89

Pressure (mb)

1011
1010
1010
1009
1008
1008
1007
1006
1006
1005
1005
1005
1004
1004
1003
1002
1002
1002
1002
1004
1006
1008
1009
1011

Ozone (du)

374
375
377
380
383
386
384
383
384
393
402
403
400
398
400
403
400
398
393
390
386
380
376
372

Sunday 7

Waning Gibbous 62%

01:09

11:35

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: 04:43, Set: 21:16, Transit: 12:59. Moon - Rise: 01:09, Set: 11:35. Civil Dark: 22:03 - 03:56. Nautical Dark: 23:16 - 02:43. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

78
79
74
60
78
84
79
91
81
90
90
98
100
100
100
97
98
99
99
94
92
100
100
100

Low Clouds (% Sky Obscured)

67
72
65
57
28
43
44
79
66
70
70
63
54
59
84
52
39
82
36
29
28
24
29
33

Medium Clouds (% Sky Obscured)

20
15
17
8
24
68
13
56
16
16
13
8
9
22
28
97
73
63
95
73
36
90
90
97

High Clouds (% Sky Obscured)

5
5
5
5
65
68
62
19
6
6
33
86
100
100
100
71
88
73
74
75
90
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
0
0
0
0
0
0
0
0
0
1
0
0
0
2
2
1
1
0
0
0
5
8

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
10
11
10
9
8
8
9
10
12
14
15
16
16
17
16
16
17
16
15
15
13
12
12

Dew Point (°C)

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

Relative Humidity (%)

92
92
95
95
95
93
95
90
87
82
77
68
60
55
58
68
59
64
64
66
72
75
79
82

Pressure (mb)

1012
1013
1014
1015
1015
1016
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

371
369
366
367
367
367
368
368
367
367
364
363
362
362
361
360
361
363
364
363
362
362
363
362

Monday 8

Third Quarter 52%

01:21

12:52

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: 04:42, Set: 21:17, Transit: 13:00. Moon - Rise: 01:21, Set: 12:52. Civil Dark: 22:04 - 03:55. Nautical Dark: 23:17 - 02:42. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
77
82
61
53
43
30

Low Clouds (% Sky Obscured)

38
46
74
77
64
67
80
72
64
56
58
63
66
73
78
84
75
62
64
68
57
50
43
30

Medium Clouds (% Sky Obscured)

100
100
99
100
99
97
96
97
99
100
100
100
100
100
100
100
100
98
40
30
13
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
81
62
44
63
50
81
93
96
65
43
27
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
9
9
4
3
8
9
9
6
7
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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

11
20
25
28
38
46
56
67
70
88
94
95
95
95
95
95
95
95
84
75
65
56
43
27

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.3
0.3
0.5
0.6
0.6
0.7
1.2
1.4
1.7
1.2
0.8
0.5
0.3
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
11
11
11
11
11
11
12
12
12
12
12
12
11
12
11
11
11
12
11
11
10
8

Dew Point (°C)

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

Relative Humidity (%)

82
82
82
79
80
83
82
83
89
87
87
89
83
77
92
90
90
84
78
80
82
84
87
85

Pressure (mb)

1019
1018
1018
1017
1017
1017
1016
1016
1016
1015
1015
1014
1014
1013
1013
1012
1012
1012
1012
1012
1012
1012
1013
1013

Ozone (du)

363
362
361
361
362
362
363
365
368
369
371
375
378
382
391
390
394
402
409
409
410
412
413
414

Tuesday 9

Waning Crescent 41%

01:32

14:10

00 OK
01 OK
02 OK
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 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
23 OK

Sun - Rise: 04:42, Set: 21:17, Transit: 13:00. Moon - Rise: 01:32, Set: 14:10. Civil Dark: 22:05 - 03:55. Nautical Dark: 23:19 - 02:41. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

26
19
11
2
15
31
47
50
52
51
60
63
65
77
88
98
98
98
94
68
45
22
16
9

Low Clouds (% Sky Obscured)

26
19
11
0
15
31
47
50
52
51
56
55
55
58
62
65
60
55
50
42
33
22
16
8

Medium Clouds (% Sky Obscured)

0
0
0
0
0
2
3
1
2
2
7
9
11
26
36
45
43
46
44
26
11
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
27
53
75
75
80
75
47
17
0
0
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
24
30
32
70
72
77
74
71
70
58
49
40
28
15

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.4
0.5
0.4
0.3
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

10
9
9
9
8
8
9
10
11
13
14
15
15
16
16
16
15
15
14
14
13
11
10
10

Feels Like (°C)

8
8
7
7
6
6
7
7
8
10
10
11
11
11
11
11
11
11
10
10
10
11
11
11

Dew Point (°C)

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

Relative Humidity (%)

87
91
90
91
93
93
93
88
79
67
59
56
50
47
49
51
53
56
58
60
66
72
78
81

Pressure (mb)

1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1014
1014
1015
1015
1015
1016

Ozone (du)

414
414
414
413
410
409
408
410
410
410
411
412
409
406
404
402
399
399
398
398
397
396
395
393

Wednesday 10

Waning Crescent 30%

01:44

15:32

00 Good
01 OK
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: 04:42, Set: 21:18, Transit: 13:00. Moon - Rise: 01:44, Set: 15:32. Civil Dark: 22:06 - 03:54. Nautical Dark: 23:20 - 02:40. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

2
21
40
59
70
81
94
80
64
53
55
56
56
68
78
87
91
96
100
100
99
99
99
99

Low Clouds (% Sky Obscured)

0
20
39
59
61
63
58
50
47
38
36
35
32
20
10
0
9
18
27
31
36
40
27
16

Medium Clouds (% Sky Obscured)

0
8
16
19
42
66
91
80
64
53
53
37
20
26
42
51
49
45
38
51
65
75
76
81

High Clouds (% Sky Obscured)

1
9
16
24
29
39
50
33
18
3
2
1
0
30
60
85
90
96
100
97
94
93
95
97

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
9
8
6
22
30
39
35
30
22
22
23
25
22
17
5
28
43

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

Chance of Frost

Temperature (°C)

9
9
9
8
8
9
10
10
12
13
15
15
15
16
16
16
17
16
16
15
14
13
13
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
88
88
88
88
85
82
80
73
66
61
61
62
64
61
60
58
61
66
70
73
75
79
84

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017

Ozone (du)

392
391
389
388
386
389
393
396
396
397
397
394
390
386
384
381
379
377
376
374
369
365
360
358

Thursday 11

Waning Crescent 20%

01:58

17:00

Sun - Rise: 04:41, Set: 21:19, Transit: 13:00. Moon - Rise: 01:58, Set: 17:00. Civil Dark: 22:07 - 03:54. Nautical Dark: 23:21 - 02:39. 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: 05/06/26 00:38:29. Forecast: 05/06/26 to 11/06/26. Timezone: UTC+1.00