Clear Outside v1.0 - International Weather Forecasts For Astronomers

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 Bad
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)

29
45
57
67
100
100
93
100
100
100
75
82
91
100
100
95
100
87
91
75
54
40
72
60

Low Clouds (% Sky Obscured)

29
45
5
45
59
57
88
90
83
83
57
63
59
81
96
83
91
82
81
61
52
29
58
60

Medium Clouds (% Sky Obscured)

29
45
57
67
98
100
92
52
68
48
27
20
32
73
92
44
38
31
44
18
0
6
14
0

High Clouds (% Sky Obscured)

29
45
57
60
35
0
0
49
17
4
1
0
6
50
55
0
60
0
0
0
0
0
0
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
9
9
6
5
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
Very Light Rain
None
None
None
None
None
Light Rain
Light Rain
Light Rain
None
Very Light Rain
Very Light Rain
None
Light Rain
None
Very Light Rain
Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

39
67
74
42
45
43
49
80
95
88
52
56
57
59
95
64
55
90
47
15
4
2
5
18

Precipitation Amount (mm)

0
0.2
0
0
0
0
0
0.5
1.1
0.6
0
0.3
0.3
0
0.9
0
0.3
0.7
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
8
9
10
12
13
15
15
16
15
15
17
18
17
15
11
6
9
11
10
9
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
8
8
8
7
8
8
8
7
9
11
11
12
10
10
11
15
14
13
12
12
10
11

Dew Point (°C)

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

Relative Humidity (%)

74
73
73
77
77
73
79
80
93
92
92
84
75
69
77
80
86
90
85
83
84
83
75
78

Pressure (mb)

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

Ozone (du)

373
375
375
377
380
384
386
381
384
386
392
402
400
405
401
401
402
405
404
391
384
382
382
380

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 OK
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)

96
78
56
52
47
42
51
47
42
77
77
82
100
100
88
99
99
95
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

88
68
50
39
29
41
44
44
42
77
39
57
87
42
46
63
21
59
42
42
29
29
33
39

Medium Clouds (% Sky Obscured)

15
23
6
6
4
3
8
7
6
15
21
13
17
29
20
95
99
31
30
96
96
100
98
100

High Clouds (% Sky Obscured)

25
3
2
29
31
9
28
4
6
3
47
18
96
100
65
88
76
18
70
52
52
52
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 (%)

18
1
0
0
0
0
0
0
0
0
1
0
3
1
4
17
4
2
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
86
87
93
95
96
93
86
75
74
72
68
66
64
68
72
67
71
70
69
70
77
80
84

Pressure (mb)

1011
1012
1013
1014
1015
1016
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

376
375
372
370
370
370
370
369
369
366
364
363
362
361
360
361
363
364
364
363
362
363
364
364

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
89
85
57
49
47
42

Low Clouds (% Sky Obscured)

44
48
51
49
46
45
61
70
61
63
64
62
63
61
61
61
45
32
17
34
41
49
47
42

Medium Clouds (% Sky Obscured)

100
100
99
98
99
99
100
95
90
85
90
94
99
99
100
100
96
100
30
23
17
0
0
0

High Clouds (% Sky Obscured)

100
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100
78
56
14
8
4
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
6
4
3
3
2
4
7
9
9
9
7
6
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
Very Light Rain
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None

Precipitation Probability (%)

0
3
5
5
23
34
46
40
54
78
90
95
95
95
91
70
91
95
95
95
91
42
30
20

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0
0
0.3
0.6
0.8
0.8
1
0.6
0.2
0.6
0.8
1.2
1
0.6
0
0
0

Wind Speed/Direction (mph)

11
11
10
9
9
9
9
10
11
11
11
11
9
9
10
10
15
10
8
8
7
7
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
84
84
84
83
84
84
83
80
80
85
90
93
93
95
96
90
89
84
80
83
84
83
84

Pressure (mb)

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

Ozone (du)

365
364
364
364
364
365
364
365
368
371
373
377
379
381
381
387
394
399
409
413
415
417
417
417

Tuesday 9

Waning Crescent 41%

01:32

14:10

00 OK
01 OK
02 OK
03 Good
04 OK
05 OK
06 OK
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)

37
25
14
1
14
23
36
49
57
66
87
92
98
89
89
91
89
81
74
48
36
22
17
9

Low Clouds (% Sky Obscured)

37
25
14
1
14
23
36
49
57
66
76
74
72
73
74
74
64
54
44
42
33
22
17
8

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
2
2
0
2
69
80
95
43
38
34
33
42
33
36
14
5
9
9

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
3
1
2
4
26
46
63
39
21
0
43
23
0
0
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
4
9
6
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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

1
1
0
0
0
0
0
0
0
7
35
34
56
59
64
67
67
63
60
59
49
37
27
15

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.3
0.3
0.3
0.3
0.2
0.2
0
0
0
0

Wind Speed/Direction (mph)

9
10
10
9
9
9
10
10
12
13
15
15
14
16
15
15
15
14
14
13
11
9
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
90
91
93
93
93
91
88
79
66
61
74
75
74
66
58
59
62
63
74
77
81
85
87

Pressure (mb)

1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1014
1014

Ozone (du)

415
411
408
408
408
408
407
408
409
409
410
411
412
413
412
411
408
408
409
407
406
406
405
403

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 OK
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
88
73
56
42
44
47
50
66
79
93
96
94
96
100
99
99
95
95

Low Clouds (% Sky Obscured)

0
20
39
59
64
63
58
49
44
35
32
30
28
22
15
5
9
18
27
31
36
40
24
12

Medium Clouds (% Sky Obscured)

2
16
15
12
17
27
28
23
20
22
18
12
7
14
27
51
52
45
35
41
46
41
21
18

High Clouds (% Sky Obscured)

1
1
0
0
12
21
27
15
8
0
0
0
0
28
53
80
75
65
60
58
42
53
70
83

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
2
1
0
9
13
16
13
9
3
10
13
15
18
16
7
5
5

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
91
90
91
91
88
85
82
75
69
62
57
51
47
45
44
43
48
54
60
66
73
83
84

Pressure (mb)

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

Ozone (du)

402
401
403
406
408
409
409
410
410
411
411
412
412
413
413
412
411
410
409
407
404
401
399
398

Thursday 11

Waning Crescent 20%

01:58

17:00

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: 04:41, 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)

98
95
89
81
81
80
80
75
84
86
89
92
95
96
94
90
89
92
95
97
98
100
99
99

Low Clouds (% Sky Obscured)

0
12
24
37
52
70
80
72
67
62
71
81
92
94
94
90
89
92
93
75
54
35
40
53

Medium Clouds (% Sky Obscured)

16
19
20
22
21
15
10
10
10
10
15
15
25
40
45
45
45
50
50
50
60
65
68
74

High Clouds (% Sky Obscured)

96
88
76
66
68
70
72
72
84
85
85
85
85
80
76
76
89
92
95
75
53
30
28
30

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
18
24
27
38
44
47
47
44
41
44
45
48
41
38
38
29
18
0
6
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
8
7
7
7
7
7
7
7
7
7
7
7
7
7
8
8
8
9
9
9
9
9

Relative Humidity (%)

87
88
88
88
88
87
82
78
72
65
60
59
59
59
58
58
58
59
61
64
68
71
76
79

Pressure (mb)

1018
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1018
1018
1018
1017
1017
1017
1016
1016
1016
1016
1016
1016
1015

Ozone (du)

398
398
399
399
400
400
400
401
401
402
403
400
398
396
392
387
383
377
371
365
362
359
356
353

Friday 12

Waning Crescent 11%

02:15

18:32

Sun - Rise: 04:41, Set: 21:19, Transit: 13:00. Moon - Rise: 02:15, Set: 18:32. Civil Dark: 22:07 - 03:53. Nautical Dark: 23:22 - 02:38. 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: 06/06/26 00:55:08. Forecast: 06/06/26 to 12/06/26. Timezone: UTC+1.00