Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 1

Waxing Gibbous 97%

13:32

07:43

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

Sun - Rise: 08:05, Set: 16:08, Transit: 12:06. Moon - Rise: 13:32, Set: 07:43. Civil Dark: 16:47 - 07:26. Nautical Dark: 17:29 - 06:44. Astro Dark: 18:09 - 06:04

Total Clouds (% Sky Obscured)

64
82
76
75
24
69
96
100
100
48
39
7
0
16
4
24
33
32
21
5
17
28
53
80

Low Clouds (% Sky Obscured)

64
38
55
37
17
29
36
43
35
41
39
7
0
16
0
13
20
5
0
0
0
0
34
31

Medium Clouds (% Sky Obscured)

1
12
29
30
5
0
0
0
0
0
0
0
0
0
0
12
19
28
21
5
17
28
19
23

High Clouds (% Sky Obscured)

64
66
24
17
24
69
95
100
100
13
6
1
0
3
4
5
8
7
4
2
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
7

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 (%)

4
1
5
1
0
2
4
9
2
1
0
0
0
0
0
0
1
1
1
3
12
7
10
21

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

Chance of Frost

Temperature (°C)

1
1
2
3
4
5
5
5
4
4
3
3
2
2
2
2
2
2
2
1
1
1
1
2

Feels Like (°C)

-5
-4
-4
-1
-1
0
1
1
-1
0
1
-0
-0
-1
-1
-1
-2
-3
-4
-4
-5
-5
-4
-4

Dew Point (°C)

-1
-1
-1
-1
1
2
2
3
1
1
1
1
1
1
1
1
0
-0
-1
-1
-2
-2
1
-1

Relative Humidity (%)

89
88
80
76
77
79
79
85
82
83
85
88
88
89
91
91
88
88
84
84
81
80
94
86

Pressure (mb)

1014
1014
1014
1013
1012
1011
1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1009
1009
1009
1008
1007
1007
1007

Ozone (du)

304
306
310
315
316
324
345
367
371
371
369
365
365
367
365
359
355
347
346
344
342
340
344
347

Friday 2

Waxing Gibbous 100%

14:35

No Set

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

Sun - Rise: 08:05, Set: 16:09, Transit: 12:07. Moon - Rise: 14:35, Set: No Set. Civil Dark: 16:48 - 07:26. Nautical Dark: 17:30 - 06:44. Astro Dark: 18:10 - 06:04

Total Clouds (% Sky Obscured)

100
95
70
8
0
0
0
8
0
8
6
0
0
0
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

36
66
0
8
0
0
0
8
0
5
6
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

36
57
28
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
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
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

40
64
24
2
0
0
0
0
0
0
1
0
0
0
0
0
3
5
2
0
0
0
0
0

Precipitation Amount (mm)

0
0.3
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
11
12
10
13
14
13
12
9
9
9
10
8
7
6
7
7
9
9
9
9
10
9
10

Chance of Frost

Temperature (°C)

2
3
2
2
3
3
3
3
2
1
1
1
1
0
0
0
0
-0
-0
-0
-1
-1
-1
-1

Feels Like (°C)

-3
-1
-3
-3
-2
-2
-1
-1
-1
-3
-4
-3
-2
-2
-2
-2
-4
-5
-5
-3
-4
-4
-4
-5

Dew Point (°C)

-2
-1
-3
-3
-4
-3
-2
-3
-2
-2
-2
-2
-1
-1
-2
-2
-2
-2
-2
-2
-3
-5
-6
-6

Relative Humidity (%)

78
77
68
66
62
65
68
67
73
78
80
81
88
89
88
86
86
89
89
91
83
72
70
68

Pressure (mb)

1007
1007
1008
1008
1008
1008
1009
1009
1009
1010
1010
1010
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1013

Ozone (du)

349
352
353
348
344
345
340
327
319
314
310
302
301
305
307
309
312
318
330
343
351
358
357
358

Saturday 3

Full Moon 99%

15:55

08:40

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

Sun - Rise: 08:04, Set: 16:10, Transit: 12:07. Moon - Rise: 15:55, Set: 08:40. Civil Dark: 16:49 - 07:25. Nautical Dark: 17:31 - 06:43. Astro Dark: 18:11 - 06:04

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

-1
-1
0
1
2
2
2
2
1
-0
-1
-1
-1
-1
-2
-2
-2
-2
-2
-3
-3
-3
-3
-3

Feels Like (°C)

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

Dew Point (°C)

-7
-7
-7
-8
-8
-8
-7
-6
-6
-6
-6
-7
-7
-7
-7
-7
-7
-8
-8
-8
-9
-9
-9
-8

Relative Humidity (%)

66
65
58
52
49
48
52
56
60
63
66
65
64
66
67
68
67
64
65
65
64
64
65
67

Pressure (mb)

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

Ozone (du)

359
359
358
349
345
347
347
349
349
347
351
357
353
344
337
330
328
331
332
332
333
337
337
338

Sunday 4

Waning Gibbous 96%

17:24

09:19

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

Sun - Rise: 08:04, Set: 16:11, Transit: 12:08. Moon - Rise: 17:24, Set: 09:19. Civil Dark: 16:50 - 07:25. Nautical Dark: 17:32 - 06:43. Astro Dark: 18:12 - 06:03

Total Clouds (% Sky Obscured)

2
3
3
3
2
1
0
0
0
0
5
8
11
21
29
49
59
81
83
78
74
72
61
56

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
18
23
4
1
1
1
0

Medium Clouds (% Sky Obscured)

1
3
3
3
2
1
0
0
0
0
5
8
11
21
29
49
59
75
80
77
74
70
61
52

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
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
1
3
2
4
10
13
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)

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

Chance of Frost

Temperature (°C)

-3
-3
-2
0
1
1
2
1
0
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2

Feels Like (°C)

-6
-6
-5
-4
-3
-3
-2
-2
-2
-3
-4
-4
-4
-4
-4
-4
-5
-5
-6
-6
-6
-6
-6
-6

Dew Point (°C)

-8
-8
-9
-9
-9
-9
-9
-8
-6
-6
-6
-5
-6
-6
-6
-6
-5
-4
-4
-4
-3
-3
-3
-3

Relative Humidity (%)

68
65
56
50
47
45
47
52
61
70
74
76
76
76
75
75
79
86
89
89
92
91
94
96

Pressure (mb)

1020
1020
1020
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

339
341
342
342
344
346
346
347
350
352
356
354
353
353
358
360
365
371
376
382
385
385
385
385

Monday 5

Waning Gibbous 90%

18:52

09:45

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

Sun - Rise: 08:04, Set: 16:13, Transit: 12:08. Moon - Rise: 18:52, Set: 09:45. Civil Dark: 16:51 - 07:25. Nautical Dark: 17:33 - 06:43. Astro Dark: 18:13 - 06:03

Total Clouds (% Sky Obscured)

47
46
44
42
18
5
1
9
18
27
7
7
7
17
29
40
52
61
69
61
50
41
60
80

Low Clouds (% Sky Obscured)

0
4
7
11
7
4
0
0
0
0
2
4
5
4
2
0
0
0
0
0
0
0
2
3

Medium Clouds (% Sky Obscured)

47
37
39
8
0
0
0
6
14
24
3
2
2
3
3
2
11
23
37
43
46
41
60
80

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
14
25
38
26
17
7
10
16
30
49
66

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 (%)

13
5
6
3
6
3
1
1
0
0
1
1
0
4
5
2
3
2
1
5
5
3
7
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)

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

Chance of Frost

Temperature (°C)

-1
-1
-0
1
2
2
2
1
-0
-1
-2
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-1
-1
-0

Feels Like (°C)

-6
-6
-4
-3
-3
-1
-2
-2
-3
-4
-4
-4
-3
-4
-3
-4
-4
-4
-3
-3
-4
-4
-4
-4

Dew Point (°C)

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

Relative Humidity (%)

94
96
94
93
78
70
73
80
87
91
91
89
87
86
84
81
78
76
74
71
72
72
74
72

Pressure (mb)

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

Ozone (du)

380
381
380
379
374
376
377
377
378
378
380
378
377
375
373
370
368
367
367
366
367
368
369
373

Tuesday 6

Waning Gibbous 83%

20:17

10:04

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
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:03, Set: 16:14, Transit: 12:09. Moon - Rise: 20:17, Set: 10:04. Civil Dark: 16:52 - 07:25. Nautical Dark: 17:34 - 06:43. Astro Dark: 18:14 - 06:03

Total Clouds (% Sky Obscured)

100
98
95
92
92
90
89
93
97
100
100
99
99
98
97
95
79
65
45
45
45
45
50
50

Low Clouds (% Sky Obscured)

4
29
55
81
80
80
81
83
88
93
86
80
74
71
70
68
57
42
35
35
35
40
35
35

Medium Clouds (% Sky Obscured)

100
98
95
92
92
90
89
92
93
97
89
82
65
58
52
47
45
43
40
25
13
0
0
0

High Clouds (% Sky Obscured)

85
60
31
5
0
0
0
0
0
0
5
10
23
46
46
42
23
21
13
7
4
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
8
7
8

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

Precipitation Probability (%)

5
22
25
17
31
33
24
42
49
41
69
75
64
61
55
44
32
20
10
13
15
21
23
29

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.3
0.4
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

1
1
3
4
5
5
4
4
4
4
4
3
3
2
2
2
2
2
1
1
1
1
1
1

Feels Like (°C)

-4
-5
-4
-4
-3
-0
-1
-2
-2
-2
-2
-2
-2
-2
-2
-3
-3
-2
-3
-2
-3
-3
-3
-2

Dew Point (°C)

-4
-3
-2
-1
1
1
1
1
1
1
1
0
0
0
0
0
1
0
-0
0
-1
-0
-0
0

Relative Humidity (%)

71
73
73
75
76
78
79
79
79
79
80
82
83
86
86
86
88
88
91
93
92
94
94
94

Pressure (mb)

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

Ozone (du)

376
380
383
387
391
392
394
395
391
387
383
381
378
376
376
376
377
376
375
374
373
372
372
372

Wednesday 7

Waning Gibbous 74%

21:35

10:18

Sun - Rise: 08:03, Set: 16:15, Transit: 12:09. Moon - Rise: 21:35, Set: 10:18. Civil Dark: 16:53 - 07:24. Nautical Dark: 17:35 - 06:43. Astro Dark: 18:15 - 06:03

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 Chichester, West Sussex, United Kingdom (50.84,-0.77)

Generated: 01/01/26 08:00:20. Forecast: 01/01/26 to 07/01/26. Timezone: UTC+0.00