Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 30

Waxing Gibbous 84%

13:04

03:06

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 OK
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:22, Set: 16:46, Transit: 12:04. Moon - Rise: 13:04, Set: 03:06. Civil Dark: 17:16 - 06:52. Nautical Dark: 17:50 - 06:18. Astro Dark: 18:23 - 05:45

Total Clouds (% Sky Obscured)

77
60
71
77
88
55
70
75
71
66
80
53
40
45
47
60
59
49
61
36
46
52
100
100

Low Clouds (% Sky Obscured)

77
60
71
77
88
50
70
75
71
66
80
50
32
38
47
59
57
41
59
20
22
23
10
14

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
13
5
0
0
0
0
0
0
2
3
6
21
26
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
2
20
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
4
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
1
9
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

52
56
49
47
46
42
40
52
38
34
31
31
33
38
41
41
45
46
46
47
47
45
47
53

Pressure (mb)

1005
1006
1006
1007
1008
1008
1009
1010
1009
1009
1008
1008
1009
1009
1010
1010
1011
1011
1012
1012
1012
1011
1011
1011

Ozone (du)

347
352
349
349
351
359
371
389
400
398
402
418
424
413
402
398
402
405
402
399
397
399
402
401

Wednesday 31

Waxing Gibbous 92%

13:46

04:26

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:22, Set: 16:47, Transit: 12:04. Moon - Rise: 13:46, Set: 04:26. Civil Dark: 17:17 - 06:52. Nautical Dark: 17:51 - 06:18. Astro Dark: 18:23 - 05:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
98
90
87
96
84
79
80
56
63
65
79
93
100
100
100
99
97
98

Low Clouds (% Sky Obscured)

25
30
30
75
91
89
87
71
78
93
80
73
65
50
52
55
66
87
93
87
61
55
70
42

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
97
85
15
27
72
2
58
31
23
33
23
56
32
34
95
99
96
97

High Clouds (% Sky Obscured)

100
100
100
100
52
0
2
2
0
1
0
0
0
2
2
3
3
16
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
4
2
1
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
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
30
30
18
16
19
24
18
6
0
0
0
0
0
0
0
0
0
6
18
9
2
2
6

Precipitation Amount (mm)

0
0.1
0.1
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
11
10
10
10
10
10
12
12
12
11
10
9
8
7
7
7
6
7
8
9
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-9
-10
-9
-9
-9
-9
-9
-8
-7
-6
-5
-6
-5
-4
-4
-4
-5
-5
-5
-6
-5
-6
-5

Dew Point (°C)

-13
-13
-9
-7
-9
-9
-12
-12
-12
-12
-11
-11
-11
-10
-9
-9
-9
-8
-8
-8
-8
-8
-7
-7

Relative Humidity (%)

48
48
69
79
68
63
51
48
48
44
43
43
44
46
50
54
56
56
57
57
57
58
59
60

Pressure (mb)

1011
1010
1011
1011
1011
1011
1012
1012
1011
1010
1009
1008
1008
1008
1008
1008
1008
1007
1007
1006
1005
1005
1004
1004

Ozone (du)

411
414
402
392
387
396
400
400
383
371
377
372
373
378
376
373
372
367
362
359
353
350
352
354

Thursday 1

Waxing Gibbous 98%

14:41

05:44

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

Sun - Rise: 07:22, Set: 16:47, Transit: 12:05. Moon - Rise: 14:41, Set: 05:44. Civil Dark: 17:18 - 06:52. Nautical Dark: 17:51 - 06:18. Astro Dark: 18:24 - 05:46

Total Clouds (% Sky Obscured)

86
100
77
51
19
6
1
1
21
45
68
70
32
50
69
43
33
36
32
20
15
15
38
65

Low Clouds (% Sky Obscured)

60
66
77
51
19
5
1
1
16
34
62
65
32
50
61
33
28
29
9
0
1
10
10
10

Medium Clouds (% Sky Obscured)

51
45
2
0
0
0
0
0
0
0
0
0
0
1
35
35
25
30
32
20
15
15
38
65

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
5
25
25
1
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
2
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 (%)

29
54
5
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
0.4
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
13
11
11
12
11
11
12
13
13
12
11
11
11
11
10
8
9
10
9
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-5
-6
-8
-7
-7
-8
-7
-7
-8
-9
-9
-8
-7
-8
-10
-10
-10
-11
-11
-11
-11
-11
-11

Dew Point (°C)

-7
-6
-6
-9
-12
-13
-14
-15
-16
-15
-16
-16
-16
-17
-17
-16
-16
-16
-16
-15
-16
-16
-16
-16

Relative Humidity (%)

61
68
70
56
49
46
45
38
35
36
34
33
32
33
35
37
38
41
42
44
44
43
44
44

Pressure (mb)

1004
1005
1006
1007
1009
1010
1011
1012
1013
1012
1012
1012
1012
1013
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016

Ozone (du)

355
355
363
378
393
383
389
402
396
378
365
364
360
355
352
351
351
352
350
351
349
348
344
341

Friday 2

Waxing Gibbous 100%

15:48

06:54

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

Sun - Rise: 07:23, Set: 16:48, Transit: 12:05. Moon - Rise: 15:48, Set: 06:54. Civil Dark: 17:18 - 06:52. Nautical Dark: 17:52 - 06:19. Astro Dark: 18:25 - 05:46

Total Clouds (% Sky Obscured)

83
83
84
85
85
84
88
94
97
44
29
35
43
39
38
32
24
31
5
2
0
0
25
47

Low Clouds (% Sky Obscured)

10
30
50
69
49
40
24
32
26
15
15
20
25
26
30
30
20
11
1
0
0
0
0
0

Medium Clouds (% Sky Obscured)

75
83
84
85
27
36
34
36
33
39
29
35
31
26
9
0
0
0
0
0
0
0
25
47

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
5
1
0
0
0
0
2
3
2
18
3
0
0
0
23
33

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
1
0
6
7
5
6
6
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-11
-11
-10
-10
-9
-9
-8
-8
-7
-6
-4
-3
-2
-2
-2
-3
-4
-4
-6
-5
-5
-6
-6
-6

Dew Point (°C)

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

Relative Humidity (%)

45
48
50
49
48
48
46
43
40
38
36
36
39
45
52
55
57
59
61
52
51
51
51
53

Pressure (mb)

1016
1015
1015
1015
1015
1015
1014
1014
1014
1012
1011
1011
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1011

Ozone (du)

337
332
327
324
323
320
319
316
313
315
314
313
313
318
321
321
318
315
314
315
317
321
322
323

Saturday 3

Full Moon 99%

17:04

07:53

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

Sun - Rise: 07:23, Set: 16:49, Transit: 12:06. Moon - Rise: 17:04, Set: 07:53. Civil Dark: 17:19 - 06:52. Nautical Dark: 17:53 - 06:19. Astro Dark: 18:26 - 05:46

Total Clouds (% Sky Obscured)

75
51
30
6
4
3
1
4
7
9
7
10
30
80
85
90
61
32
3
4
4
4
5
5

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)

75
51
28
0
0
0
0
3
4
7
4
2
0
0
0
0
0
0
0
0
1
1
1
1

High Clouds (% Sky Obscured)

40
24
11
2
1
1
0
0
0
0
1
4
24
70
70
70
54
30
2
2
1
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 (%)

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-11
-11
-11
-11
-11
-11
-11
-12
-13
-13
-13
-13
-13
-12
-12
-12
-12
-12
-11
-11
-11
-11
-11

Relative Humidity (%)

55
56
55
58
59
60
57
50
44
41
39
38
37
39
41
42
43
46
49
51
52
54
55
57

Pressure (mb)

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

Ozone (du)

327
333
335
335
335
335
338
340
340
339
338
336
333
335
333
331
330
330
331
332
330
329
327
326

Sunday 4

Waning Gibbous 95%

18:22

08:40

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

Sun - Rise: 07:23, Set: 16:50, Transit: 12:06. Moon - Rise: 18:22, Set: 08:40. Civil Dark: 17:20 - 06:52. Nautical Dark: 17:54 - 06:19. Astro Dark: 18:27 - 05:46

Total Clouds (% Sky Obscured)

4
24
43
25
24
25
30
24
25
24
37
55
83
75
55
35
46
57
66
64
49
51
56
65

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
4
9
13
20
27

Medium Clouds (% Sky Obscured)

1
1
1
2
5
4
3
4
4
12
12
27
57
55
44
31
43
56
66
64
49
28
16
11

High Clouds (% Sky Obscured)

3
6
10
18
21
24
27
20
14
7
23
41
61
58
30
4
3
2
3
5
6
8
19
32

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
1
1
0
1
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
5
5
5
5
5
5
5
5
4
4
4
3
3
3
3
3
4
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-10
-11
-11
-11
-10
-10

Relative Humidity (%)

57
58
58
58
59
57
53
52
48
45
43
42
42
43
45
46
48
48
50
50
50
51
53
53

Pressure (mb)

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

Ozone (du)

324
323
321
319
318
318
319
319
320
322
323
323
322
322
322
321
321
322
323
324
325
327
328
329

Monday 5

Waning Gibbous 89%

19:37

09:16

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
00 Bad

Sun - Rise: 07:23, Set: 16:51, Transit: 12:07. Moon - Rise: 19:37, Set: 09:16. Civil Dark: 17:21 - 06:52. Nautical Dark: 17:55 - 06:19. Astro Dark: 18:27 - 05:46

Total Clouds (% Sky Obscured)

77
82
88
94
96
98
100
100
100
100
100
100
100
100
100
100
99
98
97
85
73
60

Low Clouds (% Sky Obscured)

35
54
57
51
63
76
88
93
97
100
99
99
99
81
65
45
54
63
72
70
69
60

Medium Clouds (% Sky Obscured)

8
19
29
40
60
79
96
95
98
100
100
100
100
100
100
100
85
70
51
34
15
0

High Clouds (% Sky Obscured)

67
82
88
94
96
98
100
70
40
5
35
66
99
100
100
100
99
90
80
17
7
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
6
3
0
3
6
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

Precipitation Type

None
None
None
None
None
None
None
None
None
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
5
8
7
26
36
45
41
37
31
25
18
1
1
1
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0.1
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-10
-10
-10
-10
-10
-10
-9
-9
-6
-4
-1
-1
-1
0
0
0
-0
-1
-1
-1
-1
-2

Relative Humidity (%)

53
53
53
51
51
51
50
50
61
74
88
89
91
93
94
93
93
91
91
89
88
84

Pressure (mb)

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

Ozone (du)

329
329
329
328
328
329
331
332
333
334
334
337
339
342
344
347
349
350
351
351
351
351

Forecast for Swarthmore, Delaware, United States of America (39.90,-75.35)

Generated: 30/12/25 03:52:17. Forecast: 30/12/25 to 05/01/26. Timezone: UTC-5.00