Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 17

Waxing Crescent 39%

14:30

21:14

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

Sun - Rise: 06:39, Set: 19:10, Transit: 12:55. Moon - Rise: 14:30, Set: 21:14. Civil Dark: 19:44 - 06:06. Nautical Dark: 20:24 - 05:25. Astro Dark: 21:06 - 04:43

Total Clouds (% Sky Obscured)

52
62
71
72
77
100
99
100
99
100
100
96
35
28
24
58
64
60
60
60
33
12
10
7

Low Clouds (% Sky Obscured)

29
9
58
60
41
72
93
87
98
100
90
69
35
28
24
17
18
1
0
0
0
3
3
1

Medium Clouds (% Sky Obscured)

52
62
71
72
14
22
99
98
83
34
35
27
18
0
0
9
12
5
60
41
0
5
6
7

High Clouds (% Sky Obscured)

52
62
40
54
75
100
40
45
50
15
0
38
2
7
2
27
28
35
35
35
17
2
2
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

23
8
0
0
0
7
36
51
46
60
82
38
26
24
6
1
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0.6
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
77
77
77
79
83
83
87
89
89
89
82
65
45
43
40
39
43
51
55
61
64
71
76

Pressure (mb)

1016
1015
1015
1014
1013
1013
1012
1011
1011
1011
1010
1010
1010
1010
1010
1009
1009
1010
1010
1010
1011
1011
1012
1012

Ozone (du)

304
304
305
304
303
303
304
304
303
303
305
307
307
307
308
307
306
305
306
307
308
312
314
316

Friday 18

First Quarter 49%

15:29

22:00

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

Sun - Rise: 06:41, Set: 19:08, Transit: 12:54. Moon - Rise: 15:29, Set: 22:00. Civil Dark: 19:41 - 06:07. Nautical Dark: 20:21 - 05:27. Astro Dark: 21:04 - 04:45

Total Clouds (% Sky Obscured)

0
0
2
7
19
21
64
42
78
100
64
70
86
88
100
100
100
100
100
100
99
100
100
96

Low Clouds (% Sky Obscured)

0
0
2
7
15
15
18
19
23
16
19
22
28
30
75
80
81
87
95
97
97
88
87
81

Medium Clouds (% Sky Obscured)

0
0
0
0
6
2
0
0
3
39
12
20
25
27
95
100
97
98
100
100
99
100
99
54

High Clouds (% Sky Obscured)

0
0
0
0
0
4
61
20
60
100
43
36
32
88
97
100
100
100
100
21
25
100
50
18

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
3
12
19
19
38
40
20
30
16

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
7
7
7
6
7
9
9
11
11
13
14
13
12
13
14
14
14
14
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
83
84
85
87
90
90
91
84
72
65
58
50
45
45
51
55
59
68
72
70
70
79
86

Pressure (mb)

1012
1012
1012
1012
1013
1013
1013
1014
1014
1015
1015
1015
1014
1014
1014
1014
1013
1013
1013
1013
1014
1013
1014
1014

Ozone (du)

317
312
310
308
306
303
301
300
298
297
295
293
291
287
286
286
285
285
287
288
287
288
292
293

Saturday 19

Waxing Gibbous 59%

16:17

22:59

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: 06:42, Set: 19:05, Transit: 12:54. Moon - Rise: 16:17, Set: 22:59. Civil Dark: 19:39 - 06:09. Nautical Dark: 20:19 - 05:29. Astro Dark: 21:01 - 04:47

Total Clouds (% Sky Obscured)

98
100
100
100
98
81
100
92
97
99
100
100
100
100
100
100
93
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

87
95
96
70
41
38
45
58
64
71
79
88
85
82
92
81
85
92
74
62
78
85
88
90

Medium Clouds (% Sky Obscured)

22
32
97
87
15
8
19
50
94
83
86
60
34
62
51
57
82
48
95
75
99
100
99
99

High Clouds (% Sky Obscured)

10
91
100
86
97
81
100
92
28
48
96
100
100
38
44
100
42
100
98
90
79
71
78
59

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
7
3
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
Very Light Rain
None
None
None
None
None
None
Very Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
1
0
4
1
4
0
1
15
95
72
34
7
10
9
20
34
64
88
58

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
1.2
0.2
0
0
0
0
0
0
0.3
0.6
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
16
16
16
16
16
16
16
16
17
18
19
20
20
19
19
19
19
19
19
18
18
18
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
85
82
82
82
78
78
81
82
81
74
69
66
66
69
72
76
76
77
81
85
89
93
95

Pressure (mb)

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

Ozone (du)

293
293
293
292
290
290
289
289
290
293
292
292
292
293
292
291
290
290
291
290
288
286
284
286

Sunday 20

Waxing Gibbous 68%

16:52

00:07

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: 06:44, Set: 19:03, Transit: 12:54. Moon - Rise: 16:52, Set: 00:07. Civil Dark: 19:37 - 06:11. Nautical Dark: 20:16 - 05:31. Astro Dark: 20:58 - 04:49

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
97
95
83
96
85
98
89
93
83
91
71
81
76
68
73
74

Low Clouds (% Sky Obscured)

93
86
77
24
22
22
18
15
14
12
21
30
38
33
24
14
14
17
17
10
5
0
24
61

Medium Clouds (% Sky Obscured)

72
17
9
4
3
2
0
3
10
29
20
16
20
24
26
33
32
32
32
32
26
18
25
13

High Clouds (% Sky Obscured)

81
86
99
100
100
100
100
88
77
69
46
66
50
75
69
83
59
65
24
45
55
41
40
30

ISS Passover

Visibility (miles)

9
9
8
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

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

Precipitation Probability (%)

55
49
35
24
19
12
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.3
0.2
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
11
10
10
9
8
6
7
9
9
9
10
10
10
10
10
9
7
5
4
3
3
3

Chance of Frost

Temperature (°C)

18
18
17
17
16
15
14
13
14
14
15
16
17
17
18
18
18
18
17
16
15
15
14
14

Feels Like (°C)

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

Dew Point (°C)

17
16
16
14
14
13
13
12
11
10
9
8
7
7
5
4
5
4
6
7
6
6
6
6

Relative Humidity (%)

95
90
90
86
90
89
90
92
86
75
67
59
53
49
44
40
40
41
47
53
54
56
58
59

Pressure (mb)

1019
1019
1019
1020
1021
1022
1023
1023
1025
1025
1026
1027
1027
1028
1028
1028
1028
1028
1029
1029
1030
1030
1031
1031

Ozone (du)

290
290
289
288
288
290
289
289
288
287
287
287
286
283
282
281
280
279
280
279
279
278
277
276

Monday 21

Waxing Gibbous 77%

17:17

00:07

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

Sun - Rise: 06:46, Set: 19:01, Transit: 12:53. Moon - Rise: 17:17, Set: 00:07. Civil Dark: 19:34 - 06:12. Nautical Dark: 20:14 - 05:32. Astro Dark: 20:56 - 04:51

Total Clouds (% Sky Obscured)

77
76
76
76
69
27
25
30
28
32
30
27
24
35
46
58
64
74
93
82
69
55
41
24

Low Clouds (% Sky Obscured)

30
19
13
6
8
10
11
11
13
15
14
13
10
24
37
51
62
74
89
78
68
55
41
24

Medium Clouds (% Sky Obscured)

10
7
7
7
5
5
0
0
1
0
0
0
0
0
0
0
3
5
5
1
1
0
0
0

High Clouds (% Sky Obscured)

30
35
35
30
21
1
1
1
0
1
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
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)

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

Chance of Frost

Temperature (°C)

13
13
13
12
12
12
12
11
13
15
17
18
20
21
22
22
22
22
21
21
20
19
18
18

Feels Like (°C)

11
10
11
10
10
10
11
11
13
15
17
19
21
21
22
22
22
22
22
22
19
19
19
19

Dew Point (°C)

5
5
5
4
5
5
5
5
6
8
10
12
13
13
13
14
13
13
13
13
13
13
13
14

Relative Humidity (%)

55
57
58
58
60
62
62
63
63
61
64
64
64
60
58
58
56
58
59
61
64
67
71
76

Pressure (mb)

1031
1031
1031
1031
1031
1031
1031
1031
1032
1032
1032
1032
1032
1032
1031
1031
1030
1030
1030
1030
1031
1031
1031
1031

Ozone (du)

274
274
274
274
273
273
273
274
275
276
276
275
272
270
270
270
269
269
269
269
269
270
270
271

Tuesday 22

Waxing Gibbous 85%

17:36

01:21

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

Sun - Rise: 06:47, Set: 18:58, Transit: 12:53. Moon - Rise: 17:36, Set: 01:21. Civil Dark: 19:32 - 06:14. Nautical Dark: 20:12 - 05:34. Astro Dark: 20:53 - 04:53

Total Clouds (% Sky Obscured)

9
3
4
2
3
9
24
30
33
31
32
32
33
27
30
31
31
31
27
23
19
12
13
14

Low Clouds (% Sky Obscured)

9
3
4
2
3
6
7
0
0
0
2
3
5
8
11
15
12
9
6
4
5
3
3
3

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
4
3
3
2
2
2
2
6
10
11
7
4
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
1
1
2
2
3
4
3
2
1
1
0
0
1
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 (%)

1
1
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
1
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)

3
3
3
3
3
3
3
2
2
2
2
2
3
3
3
4
4
4
4
4
4
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
20
18
18
18
18
18
17
17
18
19
19
20
20
27
26
26
26
27
27
22
22
21
21

Dew Point (°C)

14
15
15
15
14
14
14
14
14
14
14
14
14
14
13
13
13
13
14
13
13
14
14
14

Relative Humidity (%)

81
86
89
90
90
92
92
93
85
78
72
67
61
56
55
53
51
55
58
61
66
72
78
81

Pressure (mb)

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

Ozone (du)

271
272
272
273
273
274
274
275
275
275
275
275
276
276
274
273
272
271
271
271
270
270
270
270

Wednesday 23

Waxing Gibbous 92%

17:51

02:38

Sun - Rise: 06:49, Set: 18:56, Transit: 12:53. Moon - Rise: 17:51, Set: 02:38. Civil Dark: 19:30 - 06:16. Nautical Dark: 20:09 - 05:36. Astro Dark: 20:50 - 04:55

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: 17/09/26 00:49:04. Forecast: 17/09/26 to 23/09/26. Timezone: UTC+1.00