Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 1

Full Moon 100%

18:25

07:42

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

Sun - Rise: 07:07, Set: 17:22, Transit: 12:15. Moon - Rise: 18:25, Set: 07:42. Civil Dark: 17:51 - 06:39. Nautical Dark: 18:23 - 06:07. Astro Dark: 18:55 - 05:35

Total Clouds (% Sky Obscured)

73
88
79
2
3
4
5
3
3
2
2
2
2
2
1
1
2
2
3
4
4
0
2
2

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

73
52
0
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)

73
88
58
1
1
1
1
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)

13
13
12
12
11
10
10
11
11
11
11
11
11
11
11
12
12
12
13
12
11
10
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-13
-14
-16
-14
-14
-15
-14
-15
-15
-15
-14
-14
-14
-14
-12
-10
-8
-7
-6
-5
-5
-5
-5
-7

Dew Point (°C)

-10
-12
-13
-13
-13
-13
-13
-13
-13
-13
-13
-12
-12
-12
-11
-9
-7
-7
-5
-5
-4
-5
-5
-6

Relative Humidity (%)

79
77
77
77
78
80
81
81
80
81
81
83
83
83
82
84
81
78
79
81
81
79
84
85

Pressure (mb)

1013
1013
1014
1014
1015
1015
1016
1016
1016
1017
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020

Ozone (du)

462
465
461
458
458
457
460
468
473
471
468
468
466
452
437
431
432
427
419
410
408
410
403
400

Monday 2

Waning Gibbous 98%

No Rise

08:08

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

Sun - Rise: 07:06, Set: 17:23, Transit: 12:15. Moon - Rise: No Rise, Set: 08:08. Civil Dark: 17:52 - 06:38. Nautical Dark: 18:24 - 06:06. Astro Dark: 18:56 - 05:34

Total Clouds (% Sky Obscured)

23
4
2
36
2
40
17
32
30
26
15
28
46
67
46
55
46
89
100
100
98
91
100
100

Low Clouds (% Sky Obscured)

3
2
2
2
2
2
3
23
2
4
13
26
43
63
4
21
6
30
31
44
57
56
58
51

Medium Clouds (% Sky Obscured)

9
0
0
15
0
19
6
12
18
14
0
3
4
4
46
12
41
85
97
96
91
88
92
93

High Clouds (% Sky Obscured)

0
2
0
0
0
0
2
2
0
0
0
1
3
7
44
30
40
25
27
30
66
27
97
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
0

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
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
25

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
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-5
-6
-6
-6
-7
-8
-8
-8
-7
-8
-8
-9
-9
-8
-5
-3
-1
0
0
1
1
0
-1
-1

Feels Like (°C)

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

Dew Point (°C)

-7
-7
-8
-8
-9
-9
-9
-9
-9
-9
-10
-10
-10
-10
-7
-5
-4
-2
-2
-1
-1
-1
-1
-2

Relative Humidity (%)

85
87
87
87
90
88
87
87
87
87
87
88
88
85
85
86
81
84
88
91
92
92
96
96

Pressure (mb)

1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1023
1023
1024
1024
1024
1023
1023
1022
1021
1021
1021
1021
1021

Ozone (du)

386
389
416
415
412
398
388
383
378
376
378
372
369
365
365
364
361
360
357
351
345
342
341
340

Tuesday 3

Waning Gibbous 93%

19:35

08:32

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
08 Bad
09 Bad
10 OK
11 Bad
12 Bad
13 Bad
14 OK
15 Good
16 Good
17 OK
18 OK

Sun - Rise: 07:05, Set: 17:25, Transit: 12:15. Moon - Rise: 19:35, Set: 08:32. Civil Dark: 17:53 - 06:37. Nautical Dark: 18:25 - 06:05. Astro Dark: 18:57 - 05:33

Total Clouds (% Sky Obscured)

89
91
97
99
100
100
100
96
94
97
92
88
90
54
66
34
40
69
51
41
15
14
17
12

Low Clouds (% Sky Obscured)

33
43
47
86
88
100
96
88
88
94
80
77
84
53
61
28
38
59
47
28
2
2
1
1

Medium Clouds (% Sky Obscured)

89
80
90
98
100
100
99
83
79
83
38
37
20
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

32
24
17
27
100
100
30
34
30
5
0
0
0
0
0
0
3
15
10
10
10
9
13
12

ISS Passover

Visibility (miles)

1
9
9
9
9
9
1
0
0
0
0
1
6
6
4
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
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
4
2
3
27
76
95
95
95
79
53
14
6
0
0
2
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.3
1
1.1
0.6
0.5
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
3
3
3
3
2
3
3
3
2
2
3
3
4
6
9
9
9
9
9
8
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
96
96
98
96
94
96
98
98
98
98
98
98
96
96
94
89
84
83
83
84
86
89
89

Pressure (mb)

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

Ozone (du)

344
344
348
352
357
365
368
372
371
369
378
381
381
382
382
382
381
384
385
384
384
377
379
383

Wednesday 4

Waning Gibbous 87%

20:42

08:53

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
08 Good
09 Good
10 Good
11 Good
12 OK
13 OK
14 OK
15 Good
16 Good
17 Good
18 Good

Sun - Rise: 07:04, Set: 17:26, Transit: 12:15. Moon - Rise: 20:42, Set: 08:53. Civil Dark: 17:54 - 06:36. Nautical Dark: 18:26 - 06:04. Astro Dark: 18:58 - 05:32

Total Clouds (% Sky Obscured)

8
4
1
3
3
3
4
4
3
3
4
4
2
3
4
4
3
24
25
27
4
15
2
2

Low Clouds (% Sky Obscured)

0
2
1
2
2
2
3
2
2
2
1
1
1
2
1
1
0
5
5
0
0
0
0
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

8
4
0
0
0
0
0
0
0
0
1
1
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)

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

Chance of Frost

Temperature (°C)

-5
-6
-7
-8
-9
-9
-10
-10
-10
-10
-11
-11
-12
-10
-9
-7
-6
-5
-4
-3
-3
-3
-4
-6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
85
87
87
85
85
85
85
85
86
85
83
85
83
82
80
80
81
81
79
81
82
84
89

Pressure (mb)

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

Ozone (du)

387
395
398
405
414
422
413
423
417
395
395
403
436
456
448
434
426
418
413
409
405
402
401
401

Thursday 5

Waning Gibbous 79%

21:46

09:15

19 Good
20 Good
21 Good
22 Good
23 OK
00 OK
01 OK
02 OK
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

Sun - Rise: 07:03, Set: 17:27, Transit: 12:15. Moon - Rise: 21:46, Set: 09:15. Civil Dark: 17:55 - 06:35. Nautical Dark: 18:27 - 06:03. Astro Dark: 18:59 - 05:31

Total Clouds (% Sky Obscured)

2
2
3
6
11
17
23
25
85
93
92
93
92
91
90
90
77
78
83
90
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
13
24
46
56
73
70
68
65

Medium Clouds (% Sky Obscured)

0
0
0
0
2
2
10
19
32
29
61
53
35
18
10
9
26
30
52
74
98
96
93
93

High Clouds (% Sky Obscured)

0
0
0
1
6
7
13
16
77
84
77
70
72
67
58
44
24
3
23
43
61
72
83
94

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
4
6
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
17
28
32
31
24
7

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

Chance of Frost

Temperature (°C)

-6
-6
-6
-7
-8
-8
-9
-9
-9
-9
-9
-9
-8
-7
-6
-4
-3
-2
-1
-1
-0
-0
-1
-1

Feels Like (°C)

-9
-9
-8
-9
-9
-10
-11
-11
-11
-12
-12
-12
-12
-12
-11
-10
-10
-10
-10
-5
-5
-5
-5
-5

Dew Point (°C)

-8
-8
-8
-8
-9
-10
-10
-10
-11
-11
-10
-10
-10
-9
-7
-6
-5
-3
-3
-2
-2
-1
-2
-2

Relative Humidity (%)

89
87
87
89
90
88
88
90
87
87
88
88
87
87
87
87
86
87
86
89
91
94
92
91

Pressure (mb)

1018
1017
1017
1017
1017
1016
1016
1016
1015
1015
1014
1014
1013
1013
1012
1012
1010
1009
1008
1007
1006
1005
1005
1005

Ozone (du)

403
407
409
411
420
416
410
405
404
405
403
399
397
397
398
399
401
404
407
411
415
419
417
415

Friday 6

Waning Gibbous 70%

22:50

09:37

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
08 OK
09 Good
10 Good
11 Good
12 OK
13 OK
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:02, Set: 17:28, Transit: 12:15. Moon - Rise: 22:50, Set: 09:37. Civil Dark: 17:56 - 06:34. Nautical Dark: 18:28 - 06:02. Astro Dark: N/A - 05:30

Total Clouds (% Sky Obscured)

100
100
99
79
62
47
51
56
65
71
70
68
46
23
0
2
12
19
39
62
90
95
100
100

Low Clouds (% Sky Obscured)

69
73
76
59
42
24
23
22
22
37
53
68
46
23
0
1
1
2
6
8
10
35
85
95

Medium Clouds (% Sky Obscured)

89
80
70
48
27
15
13
25
45
36
19
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

88
82
76
49
21
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 (%)

7
6
3
8
9
2
2
2
0
0
0
0
0
0
0
0
0
0
4
8
10
9
6
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
8
10
13
13
13
12
12
12
11
12
12
13
14
16
17
17
16
16
16
16
16
15
15

Chance of Frost

Temperature (°C)

-1
-2
-2
-2
-4
-6
-9
-10
-10
-11
-11
-12
-12
-12
-12
-12
-11
-11
-10
-10
-10
-10
-11
-11

Feels Like (°C)

-6
-6
-5
-6
-5
-4
-4
-14
-15
-15
-15
-16
-16
-18
-18
-19
-19
-19
-19
-16
-16
-17
-16
-17

Dew Point (°C)

-2
-3
-4
-5
-7
-10
-12
-13
-14
-15
-15
-16
-17
-16
-16
-16
-15
-15
-14
-14
-14
-15
-15
-16

Relative Humidity (%)

91
87
84
81
79
77
75
74
72
69
70
70
69
70
70
69
69
72
72
71
71
68
68
67

Pressure (mb)

1005
1005
1006
1006
1007
1007
1008
1009
1010
1011
1011
1012
1013
1014
1015
1016
1017
1017
1017
1017
1017
1018
1018
1019

Ozone (du)

413
413
413
413
416
420
423
424
424
424
438
452
466
467
468
469
469
469
469
470
471
472
479
486

Saturday 7

Waning Gibbous 61%

23:53

10:02

19 Bad
20 Bad
21 Bad
22 Bad
23 OK
00 Good
01 Good
02 OK
03 OK
04 OK
05 Bad
06 Bad
07 Bad
08 OK
09 OK
10 OK
11 OK
12 OK

Sun - Rise: 07:01, Set: 17:29, Transit: 12:15. Moon - Rise: 23:53, Set: 10:02. Civil Dark: 17:57 - 06:33. Nautical Dark: 18:29 - 06:01. Astro Dark: 19:00 - 05:29

Total Clouds (% Sky Obscured)

95
91
82
54
29
6
12
18
20
23
34
40
34
26
15
23
30
38

Low Clouds (% Sky Obscured)

90
82
60
36
16
2
1
1
0
0
1
1
1
0
0
1
1
2

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
6
12
17
22
23
23
25
22
15
12
5
3

High Clouds (% Sky Obscured)

3
5
8
6
5
4
12
18
20
23
30
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

Fog (%)

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

Precipitation Probability (%)

1
1
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

Wind Speed/Direction (mph)

14
13
13
13
12
13
12
14
14
14
14
14
14
14
14
14
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-17
-19
-20
-20
-20
-20
-21
-21
-21
-22
-22
-22
-22
-23
-22
-22
-22
-22

Dew Point (°C)

-16
-17
-18
-19
-19
-19
-20
-20
-20
-21
-21
-21
-21
-20
-19
-18
-16
-15

Relative Humidity (%)

67
66
66
63
64
65
64
64
65
65
64
64
64
65
67
68
69
70

Pressure (mb)

1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022

Ozone (du)

493
490
486
483
481
479
477
478
479
479
479
480
480
478
476
475
473
471

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

Generated: 01/02/26 18:36:59. Forecast: 01/02/26 to 07/02/26. Timezone: UTC-5.00