Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 4

Waning Crescent 42%

00:11

16:15

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

Sun - Rise: 07:07, Set: 18:31, Transit: 12:49. Moon - Rise: 00:11, 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)

66
58
53
43
19
2
47
31
26
100
100
100
100
100
93
70
71
75
72
92
98
83
48
73

Low Clouds (% Sky Obscured)

37
36
26
0
4
0
23
22
17
15
5
0
0
0
0
0
0
0
0
0
0
0
2
10

Medium Clouds (% Sky Obscured)

3
3
1
0
0
0
0
0
0
0
0
0
0
5
45
28
40
23
21
25
24
8
4
0

High Clouds (% Sky Obscured)

0
0
0
2
11
1
12
1
1
100
100
100
100
100
92
57
55
55
52
87
97
81
46
62

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)

2
2
2
0
1
3
4
5
6
6
6
6
5
4
3
3
4
4
4
4
4
4
5
5

Chance of Frost

Temperature (°C)

10
10
10
10
12
15
17
18
19
20
21
20
20
18
17
15
14
13
12
12
11
11
11
10

Feels Like (°C)

12
12
11
12
14
15
18
17
19
19
17
17
17
16
14
12
13
12
11
10
9
9
9
9

Dew Point (°C)

8
8
8
8
9
10
9
8
5
4
2
2
3
4
3
2
2
2
3
4
6
8
8
9

Relative Humidity (%)

85
85
88
88
81
70
60
50
39
33
29
28
32
37
39
39
44
47
52
59
70
80
84
88

Pressure (mb)

1029
1029
1029
1030
1030
1030
1030
1029
1029
1028
1028
1027
1027
1027
1027
1028
1028
1028
1028
1027
1027
1027
1026
1026

Ozone (du)

306
304
302
301
300
298
296
294
293
291
289
288
288
286
285
284
283
281
280
279
278
276
275
274

Monday 5

Waning Crescent 31%

01:39

16:39

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

Sun - Rise: 07:09, Set: 18:28, Transit: 12:49. Moon - Rise: 01:39, 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)

76
86
73
68
62
52
52
47
52
63
47
56
42
42
18
43
53
19
20
23
22
29
50
56

Low Clouds (% Sky Obscured)

26
29
27
20
18
11
15
14
16
25
18
28
28
27
9
10
4
4
9
10
11
12
11
13

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
1
0
0
0
0
0

High Clouds (% Sky Obscured)

52
58
39
47
44
51
35
32
37
24
18
18
4
14
6
29
40
13
6
7
5
10
30
34

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
6
15
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

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)

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

Chance of Frost

Temperature (°C)

10
10
10
11
13
15
17
19
20
21
22
22
22
20
18
17
16
15
14
13
13
12
12
12

Feels Like (°C)

9
8
9
10
11
14
16
18
19
20
21
21
21
21
19
18
15
14
15
15
14
14
13
11

Dew Point (°C)

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

Relative Humidity (%)

91
93
93
93
84
73
66
59
56
53
52
52
53
63
70
74
78
80
84
86
86
86
86
86

Pressure (mb)

1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021

Ozone (du)

273
274
275
275
275
274
273
272
271
271
271
271
271
271
272
273
274
275
275
275
276
277
276
276

Tuesday 6

Waning Crescent 20%

03:04

16:57

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:10, Set: 18:26, Transit: 12:48. Moon - Rise: 03:04, 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)

90
65
88
81
73
85
86
100
99
100
91
100
71
91
93
84
88
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

16
25
32
25
22
9
2
7
12
10
24
0
1
8
11
7
15
45
65
50
53
54
60
84

Medium Clouds (% Sky Obscured)

0
0
0
0
0
11
17
0
4
4
5
68
71
91
93
84
88
98
96
36
52
99
100
100

High Clouds (% Sky Obscured)

76
56
82
69
70
85
86
100
99
100
90
100
40
37
37
25
4
94
100
100
97
94
91
95

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 (%)

67
100
99
84
84
81
1
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
1
5
5
6
9
12
27
38
45
48

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)

2
2
2
2
2
3
3
3
4
3
3
3
3
3
2
2
2
2
3
2
2
2
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
85
85
81
72
66
60
55
52
49
46
45
46
52
52
54
58
63
66
66
70
73
73
74

Pressure (mb)

1020
1020
1020
1020
1020
1020
1019
1019
1018
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014

Ozone (du)

276
277
278
279
280
280
281
283
284
286
287
288
289
290
291
293
295
297
298
297
297
297
298
299

Wednesday 7

Waning Crescent 12%

04:27

17:11

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

Sun - Rise: 07:12, Set: 18:24, Transit: 12:48. Moon - Rise: 04:27, 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
99
98
97
89
84
76
73
70
68
17
10
5
13
22
33
32
27
24
24

Low Clouds (% Sky Obscured)

92
100
98
97
95
95
95
94
87
81
71
68
61
53
13
6
0
8
15
22
22
23
21
21

Medium Clouds (% Sky Obscured)

100
100
100
100
100
98
97
95
85
72
65
59
46
0
0
0
0
4
7
11
7
4
0
0

High Clouds (% Sky Obscured)

93
94
100
100
100
86
72
53
62
9
3
9
57
0
5
5
4
1
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
3
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 (%)

44
33
37
38
45
41
37
30
35
31
8
1
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)

5
7
10
10
10
11
11
11
11
12
13
12
12
12
11
10
10
12
11
10
10
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
12
11
10
10
10
10
9
9
9
9
10
10
9
8
9
8
5
5
5
5
5
5
5

Dew Point (°C)

9
10
12
12
11
10
10
9
9
10
10
10
8
6
5
6
6
2
2
3
3
3
3
3

Relative Humidity (%)

73
78
92
93
90
87
84
83
81
81
80
78
69
65
64
73
78
61
62
69
74
75
75
77

Pressure (mb)

1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1018
1018
1019
1019
1019
1019
1020
1020
1020

Ozone (du)

300
302
302
302
300
295
291
293
295
299
302
306
308
310
310
310
309
307
305
303
301
300
299
299

Thursday 8

Waning Crescent 6%

No Rise

17:24

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:14, Set: 18:22, Transit: 12:48. Moon - Rise: No Rise, 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)

27
86
81
78
73
76
79
82
75
74
70
68
70
72
56
62
70
81
90
98
99
99
100
100

Low Clouds (% Sky Obscured)

24
27
21
15
10
11
12
50
75
72
62
60
59
55
48
51
55
72
75
81
87
92
98
97

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
7
6
7
8
7
27
44
61
73
85
98
89
80
70
60

High Clouds (% Sky Obscured)

3
65
70
75
73
76
79
82
70
30
4
48
50
45
56
52
46
38
36
33
40
48
55
71

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
7
8
8
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
0
0
0
0
0
0
0
1
7
16
26
36
48
49

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
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
5
5
5
5
4
4
4
4
4
4
4
2
1
2
3
3
3
3
4
5
6
7
8

Relative Humidity (%)

82
85
87
85
77
66
59
55
51
50
50
49
47
46
52
56
60
63
67
72
76
78
82
85

Pressure (mb)

1020
1021
1021
1022
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1025
1026
1026
1026
1025
1025
1024
1024
1023
1022

Ozone (du)

298
299
298
297
295
294
293
291
290
287
285
283
280
278
276
276
275
275
275
274
274
273
272
271

Friday 9

Waning Crescent 2%

05:47

17:35

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 OK
23 Bad
00 Bad
01 OK
02 OK
03 OK
04 OK

Sun - Rise: 07:15, Set: 18:19, Transit: 12:47. Moon - Rise: 05:47, Set: 17:35. Civil Dark: 18:53 - 06:42. Nautical Dark: 19:32 - 06:03. Astro Dark: 20:11 - 05:24

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
91
83
75
71
69
65
54
43
29
33
37
32
29
25
18
15

Low Clouds (% Sky Obscured)

96
95
82
71
60
60
59
59
46
37
27
33
39
47
41
31
18
24
35
32
29
25
18
15

Medium Clouds (% Sky Obscured)

49
39
43
48
53
57
66
66
60
54
49
49
43
34
23
12
1
1
0
0
0
0
0
0

High Clouds (% Sky Obscured)

85
100
99
98
97
78
62
40
30
16
1
0
0
0
0
0
0
1
1
2
2
3
4
5

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 (%)

49
42
37
39
46
46
40
24
18
13
12
13
13
5
11
13
14
19
23
25
26
23
12
10

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
12
12
13
13
13
14
15
16
16
16
16
14
13
12
12
11
10
9
9
9
8
7
6

Chance of Frost

Temperature (°C)

11
12
12
13
14
15
16
17
18
18
18
19
17
16
15
14
14
13
13
13
13
12
11
10

Feels Like (°C)

7
6
6
9
10
10
10
11
11
15
14
13
13
14
14
9
10
10
10
9
9
9
10
10

Dew Point (°C)

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

Relative Humidity (%)

87
88
90
87
84
82
74
67
61
56
52
47
56
65
76
79
82
86
86
86
86
84
86
84

Pressure (mb)

1021
1020
1020
1019
1019
1019
1018
1018
1017
1017
1017
1016
1016
1017
1017
1018
1018
1018
1019
1019
1019
1019
1019
1020

Ozone (du)

270
270
270
269
269
268
269
269
269
270
271
272
272
273
273
272
272
272
272
272
272
273
273
274

Saturday 10

New Moon 0%

07:06

17:47

05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
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
00 Bad

Sun - Rise: 07:17, Set: 18:17, Transit: 12:47. Moon - Rise: 07:06, Set: 17:47. Civil Dark: 18:51 - 06:44. Nautical Dark: 19:30 - 06:05. Astro Dark: 20:09 - 05:26

Total Clouds (% Sky Obscured)

13
11
14
19
22
39
55
70
77
84
90
92
94
97
97
97
97
94
91
88

Low Clouds (% Sky Obscured)

9
2
5
9
16
28
41
51
56
61
65
66
64
66
59
46
33
32
27
26

Medium Clouds (% Sky Obscured)

0
0
0
0
0
5
10
15
20
26
32
31
27
23
39
53
66
60
50
46

High Clouds (% Sky Obscured)

7
8
7
6
5
20
36
51
54
52
47
55
60
69
69
69
71
73
75
78

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
1

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
90
91
81
73
65
60
56
51
51
51
50
52
55
57
59
61
64
69
76

Pressure (mb)

1020
1020
1020
1020
1021
1021
1021
1020
1020
1020
1019
1019
1019
1019
1018
1018
1018
1018
1017
1017

Ozone (du)

274
275
275
276
278
279
280
281
282
284
286
289
291
293
295
296
298
300
301
301

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

Generated: 04/10/26 05:48:40. Forecast: 04/10/26 to 10/10/26. Timezone: UTC+1.00