Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 2

Waning Gibbous 66%

21:28

14:47

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

Sun - Rise: 07:04, Set: 18:35, Transit: 12:50. Moon - Rise: 21:28, Set: 14:47. Civil Dark: 19:09 - 06:30. Nautical Dark: 19:48 - 05:51. Astro Dark: 20:28 - 05:11

Total Clouds (% Sky Obscured)

17
24
47
68
11
13
24
25
33
7
29
29
45
74
69
58
75
44
20
40
70
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
5
14
16
6
3
19
21
36
37
41
26
21
3
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

4
24
47
51
8
6
3
0
12
0
0
0
0
43
32
8
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

17
24
47
42
1
1
1
3
5
2
1
1
2
2
10
30
56
41
20
40
70
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
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
3
5
5
5
5
5
5
7
9
11
11
12
12
12
12
11
10
8
8
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
8
8
9
10
10
10
11
13
14
16
17
18
18
17
17
17
16
14
13
12
11
11

Dew Point (°C)

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

Relative Humidity (%)

69
71
73
74
80
83
84
85
83
74
67
59
51
45
42
40
41
42
46
53
59
63
67
70

Pressure (mb)

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

Ozone (du)

307
306
306
306
306
306
306
305
305
303
303
303
303
302
300
299
299
299
299
299
300
300
300
300

Saturday 3

Third Quarter 54%

22:45

15:39

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: 07:05, Set: 18:33, Transit: 12:49. Moon - Rise: 22:45, Set: 15:39. Civil Dark: 19:06 - 06:32. Nautical Dark: 19:45 - 05:53. Astro Dark: 20:25 - 05:13

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
95
78
97
100
97
98
97
64
58

Low Clouds (% Sky Obscured)

2
3
2
4
5
3
3
4
8
13
17
66
91
55
46
71
78
84
85
90
88
82
64
58

Medium Clouds (% Sky Obscured)

3
2
0
0
0
9
28
30
40
31
32
31
33
35
30
3
0
32
45
42
42
3
3
5

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
89
66
2
3
8
5
6
50
4
31

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
1
2
2
10
15
11
9
7
4
3
7
6
7
2
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
6
5
5
5
5
4
4
6
7
7
7
7
7
6
5
5
4
4
4
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
10
10
10
10
10
10
10
10
13
14
15
16
17
17
18
18
18
17
15
15
14
14
13

Dew Point (°C)

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

Relative Humidity (%)

72
73
76
77
79
80
81
81
79
74
69
64
64
62
56
53
52
54
61
65
66
66
66
64

Pressure (mb)

1029
1029
1029
1028
1028
1028
1028
1028
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1029
1029
1029
1029

Ozone (du)

300
300
301
301
301
302
302
303
304
305
305
304
304
305
305
304
303
302
304
304
305
305
305
305

Sunday 4

Waning Crescent 42%

No Rise

16:15

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

Sun - Rise: 07:07, Set: 18:31, Transit: 12:49. Moon - Rise: No Rise, Set: 16:15. Civil Dark: 19:04 - 06:34. Nautical Dark: 19:43 - 05:55. Astro Dark: 20:23 - 05:15

Total Clouds (% Sky Obscured)

61
50
50
45
45
45
38
40
45
43
0
3
18
5
49
46
99
98
94
95
95
95
86
77

Low Clouds (% Sky Obscured)

61
50
50
45
45
45
38
31
41
42
0
0
1
0
0
2
0
0
0
6
12
16
11
5

Medium Clouds (% Sky Obscured)

12
50
50
8
4
3
0
0
0
0
0
1
5
0
0
0
0
7
28
41
33
67
86
77

High Clouds (% Sky Obscured)

45
45
44
14
1
0
0
0
0
0
0
0
1
5
48
46
99
98
91
72
55
42
42
41

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
2
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)

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

Chance of Frost

Temperature (°C)

12
11
10
10
9
9
8
7
8
10
13
15
17
18
19
20
20
20
19
16
15
14
13
12

Feels Like (°C)

12
10
9
9
9
8
8
7
9
11
13
15
17
18
19
19
18
17
17
14
13
12
11
11

Dew Point (°C)

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

Relative Humidity (%)

66
68
72
76
80
81
84
87
87
77
69
63
58
53
50
48
46
48
54
61
61
62
63
67

Pressure (mb)

1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1028
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

306
308
309
311
312
313
310
306
305
302
300
298
296
295
293
289
287
285
283
280
280
279
279
279

Monday 5

Waning Crescent 31%

00:11

16:39

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

Sun - Rise: 07:09, Set: 18:28, Transit: 12:49. Moon - Rise: 00:11, Set: 16:39. Civil Dark: 19:02 - 06:35. Nautical Dark: 19:41 - 05:56. Astro Dark: 20:20 - 05:17

Total Clouds (% Sky Obscured)

67
60
38
42
50
58
75
86
83
35
36
37
38
51
55
58
62
43
56
58
62
67
74
80

Low Clouds (% Sky Obscured)

0
0
0
0
11
24
48
71
70
25
27
34
38
39
38
38
46
32
56
58
60
65
69
69

Medium Clouds (% Sky Obscured)

67
60
8
3
15
27
38
29
19
9
10
11
8
8
9
6
6
7
6
7
7
6
9
12

High Clouds (% Sky Obscured)

34
16
26
35
40
45
47
26
14
6
9
9
13
15
14
19
13
6
0
0
0
1
1
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
7
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
1
2
4
4
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)

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

Chance of Frost

Temperature (°C)

12
11
10
10
9
9
9
10
11
13
15
17
19
21
21
22
22
21
20
18
18
17
16
15

Feels Like (°C)

10
10
9
10
10
10
9
9
10
12
15
17
19
21
21
21
21
19
19
17
16
15
15
14

Dew Point (°C)

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

Relative Humidity (%)

77
83
88
91
93
95
95
96
93
83
73
65
63
60
57
56
56
60
66
69
68
68
70
73

Pressure (mb)

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

Ozone (du)

278
277
276
274
273
273
271
271
270
270
270
269
269
268
268
268
268
268
268
268
268
269
269
268

Tuesday 6

Waning Crescent 20%

01:39

16:57

00 Bad
01 Bad
02 Bad
03 Bad
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 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:10, Set: 18:26, Transit: 12:48. Moon - Rise: 01:39, Set: 16:57. Civil Dark: 19:00 - 06:37. Nautical Dark: 19:39 - 05:58. Astro Dark: 20:18 - 05:19

Total Clouds (% Sky Obscured)

83
83
84
65
37
40
60
86
90
94
97
98
98
99
100
100
99
98
98
99
99
100
100
100

Low Clouds (% Sky Obscured)

69
75
79
61
27
28
21
24
23
24
75
66
65
58
54
48
44
35
25
42
59
77
83
89

Medium Clouds (% Sky Obscured)

15
12
10
11
14
17
46
72
81
89
91
95
94
95
96
97
95
94
93
95
97
98
98
98

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
0
1
1
15
29
48
46
48
35
54
62
78
86
92
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
8
8
7
6

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
Very Light Rain

Precipitation Probability (%)

3
0
12
0
0
0
0
0
0
1
1
0
2
21
30
38
39
35
29
26
28
35
49
56

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
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
79
80
82
87
92
93
92
89
79
71
67
65
64
62
59
58
61
65
71
77
83
90
90

Pressure (mb)

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

Ozone (du)

269
269
269
269
269
270
270
271
273
274
275
276
277
278
280
283
285
286
287
288
289
290
291
291

Wednesday 7

Waning Crescent 12%

03:04

17:11

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 OK
23 Bad

Sun - Rise: 07:12, Set: 18:24, Transit: 12:48. Moon - Rise: 03:04, Set: 17:11. Civil Dark: 18:57 - 06:39. Nautical Dark: 19:36 - 06:00. Astro Dark: 20:16 - 05:20

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
96
92
88
81
74
66
53
40
28
38
49

Low Clouds (% Sky Obscured)

94
94
95
95
95
96
95
97
98
100
93
87
81
85
86
86
80
74
66
35
17
1
10
23

Medium Clouds (% Sky Obscured)

98
99
98
99
97
94
91
69
49
29
25
25
22
29
26
21
37
57
66
53
40
28
32
17

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
97
87
70
63
75
100
75
51
31
29
32
30
27
22
12
9
5

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

60
58
49
41
49
53
62
60
52
35
27
20
9
18
15
11
16
11
7
8
6
4
9
11

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
93
93
92
92
90
89
84
83
79
72
67
61
58
56
54
55
55
56
65
76
85
82

Pressure (mb)

1019
1019
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1021
1021
1022
1022
1023

Ozone (du)

290
290
291
292
293
295
297
299
298
297
295
296
296
296
300
303
307
309
311
313
317
321
325
322

Thursday 8

Waning Crescent 6%

04:27

17:24

Sun - Rise: 07:14, Set: 18:22, Transit: 12:48. Moon - Rise: 04:27, Set: 17:24. Civil Dark: 18:55 - 06:40. Nautical Dark: 19:34 - 06:01. Astro Dark: 20:13 - 05:22

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: 02/10/26 00:13:11. Forecast: 02/10/26 to 08/10/26. Timezone: UTC+1.00