Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 4

Waning Gibbous 87%

20:42

08:53

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

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)

80
85
88
91
31
91
42
7
5
4
3
2
2
2
1
1
1
2
22
29
36
15
3
9

Low Clouds (% Sky Obscured)

6
8
6
3
2
3
3
3
3
2
2
2
2
2
1
1
1
2
11
18
22
11
2
6

Medium Clouds (% Sky Obscured)

74
85
88
73
31
19
2
2
2
2
1
0
0
0
0
0
0
0
0
0
0
0
0
3

High Clouds (% Sky Obscured)

24
35
31
29
28
90
40
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
87
85
84
80
83
83
83
83
83
83
83
85
82
80
77
77
78
78
76
76
79
86
89

Pressure (mb)

1024
1024
1023
1023
1023
1023
1022
1022
1021
1021
1021
1020
1021
1021
1021
1021
1020
1019
1017
1016
1016
1015
1015
1016

Ozone (du)

386
394
403
413
420
422
424
429
428
423
417
408
389
390
400
401
408
408
402
396
389
383
383
389

Thursday 5

Waning Gibbous 79%

21:46

09:15

19 OK
20 OK
21 OK
22 Bad
23 OK
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

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)

9
11
36
40
42
84
96
99
93
85
93
91
81
99
90
89
59
69
98
100
99
100
100
99

Low Clouds (% Sky Obscured)

7
5
5
4
3
3
2
13
3
3
3
29
27
20
22
17
2
49
71
80
82
82
80
82

Medium Clouds (% Sky Obscured)

4
4
4
40
28
84
96
89
83
85
93
91
81
99
90
89
28
37
51
100
96
100
100
98

High Clouds (% Sky Obscured)

2
4
35
19
37
68
63
97
50
50
45
45
45
45
45
2
0
0
27
71
59
42
15
19

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
2
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
3
15
2
12

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

Chance of Frost

Temperature (°C)

-5
-5
-6
-6
-7
-7
-7
-7
-7
-8
-7
-7
-7
-7
-6
-5
-3
-2
-2
-1
-1
-2
-2
-3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
87
87
85
82
82
82
82
83
83
83
83
83
82
79
76
72
72
74
75
78
83
91
91

Pressure (mb)

1015
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012
1011
1011
1011
1010
1010
1009
1008
1007
1006
1006
1005
1005
1005

Ozone (du)

394
396
390
393
402
395
385
385
389
394
399
403
409
407
407
403
415
421
416
414
410
407
411
426

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

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)

97
95
94
99
100
100
100
100
97
95
95
90
94
91
66
59
72
40
22
11
1
1
1
1

Low Clouds (% Sky Obscured)

82
80
79
85
80
85
81
85
79
51
87
85
83
86
47
1
5
6
1
1
0
0
1
0

Medium Clouds (% Sky Obscured)

97
94
87
95
100
100
100
100
93
88
93
82
85
56
37
18
23
9
6
2
0
0
0
0

High Clouds (% Sky Obscured)

25
17
20
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

8
0
0
0
0
0
0
1
9
2
9
9
1
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
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

35
43
46
44
46
39
31
27
22
10
5
14
1
1
1
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0.1
0.1
0.1
0.2
0.1
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
4
4
4
5
7
10
11
14
17
17
19
19
19
19
19
20
19
19
19
18

Chance of Frost

Temperature (°C)

-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-5
-8
-10
-11
-11
-11
-10
-10
-10
-10
-11
-12

Feels Like (°C)

-6
-6
-6
-6
-6
-6
-6
-6
-7
-8
-8
-9
-12
-15
-17
-18
-18
-18
-18
-17
-17
-17
-18
-19

Dew Point (°C)

-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-5
-5
-7
-12
-14
-15
-16
-15
-15
-15
-15
-15
-16
-17

Relative Humidity (%)

89
94
96
96
98
98
96
96
94
89
87
86
85
74
72
70
69
69
69
68
68
66
66
66

Pressure (mb)

1005
1005
1004
1004
1003
1003
1002
1002
1002
1002
1002
1003
1005
1007
1009
1011
1012
1013
1013
1014
1015
1016
1018
1020

Ozone (du)

433
433
433
435
435
433
433
432
426
424
422
422
428
440
447
452
455
454
458
457
456
456
459
449

Saturday 7

Waning Gibbous 61%

23:53

10:02

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

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)

1
1
2
3
4
4
5
4
4
24
46
69
76
100
100
100
100
100
96
92
87
84
80
77

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
18
27
55
67
67
100
100
100
100
94
87
81
79
78
75

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
24
46
69
53
46
25
25
30
30
30
50
60
65
70
70

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
4
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
2
0
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-19
-19
-19
-20
-19
-19
-19
-19
-19
-19
-20
-19
-19
-18
-19
-18
-17
-17
-16
-14
-14
-14
-14
-13

Dew Point (°C)

-18
-18
-18
-19
-18
-19
-19
-19
-19
-18
-19
-19
-19
-19
-18
-18
-17
-16
-14
-13
-13
-12
-12
-12

Relative Humidity (%)

66
66
67
67
69
68
70
71
70
73
72
72
72
70
68
66
66
69
71
74
74
75
82
83

Pressure (mb)

1021
1022
1023
1024
1024
1024
1025
1025
1026
1026
1027
1028
1028
1028
1028
1028
1028
1027
1026
1025
1025
1024
1024
1024

Ozone (du)

436
427
424
416
411
401
394
390
383
379
374
373
373
371
367
364
361
360
358
357
358
357
356
360

Sunday 8

Waning Gibbous 51%

00:56

10:31

19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
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

Sun - Rise: 07:00, Set: 17:31, Transit: 12:15. Moon - Rise: 00:56, Set: 10:31. Civil Dark: 17:59 - 06:32. Nautical Dark: 18:30 - 06:00. Astro Dark: 19:01 - 05:28

Total Clouds (% Sky Obscured)

61
74
71
66
54
55
65
75
80
80
85
36
34
31
29
42
54
68
76
85
95
93
91
94

Low Clouds (% Sky Obscured)

24
48
71
48
24
0
0
0
0
0
0
0
0
0
0
1
4
4
12
10
0
0
0
0

Medium Clouds (% Sky Obscured)

42
22
1
34
45
44
50
8
44
36
31
2
1
0
0
14
24
36
52
71
88
83
78
61

High Clouds (% Sky Obscured)

0
3
11
10
54
5
4
75
70
70
49
16
12
7
0
20
39
58
43
30
11
34
56
74

ISS Passover

Visibility (miles)

9
9
9
7
9
9
7
7
7
7
9
9
8
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)

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

Chance of Frost

Temperature (°C)

-10
-10
-11
-11
-11
-11
-11
-12
-12
-12
-12
-12
-13
-11
-10
-8
-7
-6
-4
-4
-3
-3
-4
-5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
86
85
85
85
85
86
86
86
86
86
85
84
83
80
75
77
77
78
79
81
82
87
89

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1021
1020
1019
1019
1019
1019
1019

Ozone (du)

363
364
365
366
364
365
363
362
362
362
362
362
364
366
367
369
366
363
360
358
355
352
349
346

Monday 9

Third Quarter 41%

01:58

11:05

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

Sun - Rise: 06:58, Set: 17:32, Transit: 12:15. Moon - Rise: 01:58, Set: 11:05. Civil Dark: 18:00 - 06:31. Nautical Dark: 18:32 - 05:59. Astro Dark: 19:02 - 05:27

Total Clouds (% Sky Obscured)

93
91
90
93
95
96
88
74
48
32
25
19
12
6
5
15
38
35
56
74
94
98
100
100

Low Clouds (% Sky Obscured)

0
0
2
3
17
10
5
5
0
0
0
0
0
0
5
4
3
2
6
8
9
39
86
96

Medium Clouds (% Sky Obscured)

36
51
71
80
90
96
88
74
48
32
20
10
6
3
0
2
3
2
3
2
0
27
53
79

High Clouds (% Sky Obscured)

75
77
78
60
36
24
15
11
7
7
20
19
12
6
5
15
26
23
32
40
23
4
4
4

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
4
7
9
8
6
1
0
0
0
0
0
0
0
0
0
3
4
0
13
20
27

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-7
-7
-6
-6
-6
-5
-5
-5
-5
-5
-5
-6
-4
-3
-2
-1
-1
1
1
1
1
1
1

Relative Humidity (%)

94
90
90
89
90
92
94
94
94
94
94
94
94
96
94
94
94
92
93
96
96
100
100
100

Pressure (mb)

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

Ozone (du)

343
341
338
336
334
331
328
326
323
321
321
322
323
323
323
323
323
323
322
323
323
323
320
318

Tuesday 10

Waning Crescent 32%

02:59

11:47

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 Bad
11 Bad
12 Bad

Sun - Rise: 06:57, Set: 17:33, Transit: 12:15. Moon - Rise: 02:59, Set: 11:47. Civil Dark: 18:01 - 06:29. Nautical Dark: 18:33 - 05:58. Astro Dark: 19:03 - 05:26

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
98
96
95
95
91
89
86
86
90
90
91
91

Low Clouds (% Sky Obscured)

97
95
88
87
87
87
75
66
55
52
51
44
37
30
22
23
24
25

Medium Clouds (% Sky Obscured)

74
70
66
55
42
29
27
26
25
42
59
76
75
75
80
81
89
86

High Clouds (% Sky Obscured)

25
44
62
74
86
99
72
44
12
8
5
2
1
11
20
75
80
85

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
3
6
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
Very Light Rain
Very Light Rain
Sleet
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

42
51
58
47
33
7
7
3
0
2
3
2
1
1
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

2
2
2
3
3
4
4
5
6
8
7
6
6
6
7
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
100
98
100
100
100
100
100
100
100
96
93
93
89
86
84
80
75

Pressure (mb)

1013
1013
1012
1012
1012
1012
1011
1011
1011
1011
1012
1013
1013
1014
1014
1015
1015
1015

Ozone (du)

316
316
316
317
317
318
318
321
323
325
327
329
331
335
339
343
347
352

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

Generated: 04/02/26 19:53:42. Forecast: 04/02/26 to 10/02/26. Timezone: UTC-5.00