Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 5

Waning Gibbous 79%

21:46

08:53

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

Sun - Rise: 07:03, Set: 17:26, Transit: 12:15. Moon - Rise: 21:46, Set: 08:53. Civil Dark: 17:54 - 06:35. Nautical Dark: 18:26 - 06:03. Astro Dark: 18:58 - 05:31

Total Clouds (% Sky Obscured)

16
13
11
9
2
10
34
41
23
2
6
7
11
4
4
42
70
100
100
84
82
91
98
96

Low Clouds (% Sky Obscured)

3
3
3
2
2
9
34
41
23
2
4
6
5
4
4
7
8
4
1
1
2
2
14
31

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
3
3
42
53
100
97
84
82
91
98
96

High Clouds (% Sky Obscured)

0
0
0
0
0
1
2
0
0
0
2
1
6
0
1
2
19
100
87
82
65
65
65
50

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
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)

3
4
6
6
7
7
6
6
5
4
3
3
3
3
4
2
2
3
4
4
3
2
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
80
79
78
78
78
78
78
81
89
92
92
87
89
87
87
85
85
87
85
85
85
88
87

Pressure (mb)

1021
1021
1021
1021
1019
1018
1017
1016
1016
1016
1016
1016
1015
1015
1014
1014
1014
1014
1013
1012
1012
1012
1011
1011

Ozone (du)

395
409
406
410
410
398
391
392
384
372
377
388
388
385
385
393
388
382
381
382
387
394
402
402

Friday 6

Waning Gibbous 70%

22:50

09:15

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: 07:02, Set: 17:27, Transit: 12:15. Moon - Rise: 22:50, Set: 09:15. Civil Dark: 17:55 - 06:34. Nautical Dark: 18:27 - 06:02. Astro Dark: 18:59 - 05:30

Total Clouds (% Sky Obscured)

92
85
85
89
85
90
100
97
100
100
100
100
100
100
95
97
98
95
98
96
94
93
57
29

Low Clouds (% Sky Obscured)

30
46
50
40
34
30
44
40
70
63
67
78
80
85
85
87
85
87
88
87
90
77
47
29

Medium Clouds (% Sky Obscured)

92
85
85
89
28
90
88
81
99
100
100
99
100
100
93
83
96
93
97
92
91
90
57
29

High Clouds (% Sky Obscured)

2
0
0
0
0
8
66
79
80
86
76
73
58
32
10
2
8
16
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
0
0
0
0
0
0
0
0
1
1

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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
2
3
8
17
27
35
41
39
48
56
52
45
33
22
6

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.1
0.1
0.2
0.3
0.2
0.2
0.1
0
0

Wind Speed/Direction (mph)

3
2
2
1
2
3
3
3
3
4
4
3
3
3
3
4
4
5
5
6
7
10
14
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
84
82
79
76
75
75
74
80
87
91
91
89
89
91
96
96
96
96
96
94
94
89
85

Pressure (mb)

1010
1010
1010
1009
1008
1007
1006
1006
1005
1005
1005
1005
1005
1005
1004
1004
1003
1003
1002
1002
1001
1001
1002
1004

Ozone (du)

396
393
392
395
398
400
402
402
403
406
409
414
419
420
416
413
414
412
414
416
416
411
436
449

Saturday 7

Waning Gibbous 61%

23:53

09:37

08 OK
09 OK
10 OK
11 OK
12 OK
13 OK
14 OK
15 OK
16 OK
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 OK

Sun - Rise: 07:01, Set: 17:28, Transit: 12:15. Moon - Rise: 23:53, Set: 09:37. Civil Dark: 17:56 - 06:33. Nautical Dark: 18:28 - 06:01. Astro Dark: 19:00 - 05:29

Total Clouds (% Sky Obscured)

23
14
29
41
38
15
37
18
20
11
1
1
1
2
1
1
6
4
3
1
1
1
1
26

Low Clouds (% Sky Obscured)

23
14
15
8
4
0
0
0
0
0
0
0
0
0
0
0
6
4
2
0
0
0
1
1

Medium Clouds (% Sky Obscured)

23
4
12
28
23
0
18
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8

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 (%)

8
0
0
0
0
0
1
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)

19
18
19
19
19
19
19
20
19
19
19
18
18
17
16
15
15
14
13
13
13
12
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-18
-19
-20
-19
-19
-19
-19
-20
-20
-21
-21
-21
-21
-20
-20
-20
-20
-20
-20
-20
-20
-19
-19

Dew Point (°C)

-11
-14
-15
-16
-16
-16
-15
-16
-17
-17
-18
-19
-19
-19
-19
-19
-19
-19
-19
-19
-19
-19
-19
-19

Relative Humidity (%)

80
75
72
72
69
69
70
69
66
67
64
65
65
64
66
65
66
67
68
70
70
70
70
72

Pressure (mb)

1006
1008
1009
1010
1011
1011
1012
1013
1014
1016
1017
1019
1020
1020
1021
1021
1022
1022
1023
1023
1024
1024
1025
1026

Ozone (du)

455
462
464
463
461
460
458
460
459
456
459
457
453
448
433
423
421
416
411
408
405
399
393
390

Sunday 8

Waning Gibbous 51%

00:56

10:02

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: 07:00, Set: 17:29, Transit: 12:15. Moon - Rise: 00:56, Set: 10:02. Civil Dark: 17:57 - 06:32. Nautical Dark: 18:29 - 06:00. Astro Dark: 19:01 - 05:28

Total Clouds (% Sky Obscured)

49
65
60
97
100
100
100
100
98
93
91
86
96
98
91
84
77
59
46
25
25
20
20
20

Low Clouds (% Sky Obscured)

3
2
2
23
36
37
5
22
28
1
1
2
20
14
10
5
5
5
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

22
33
41
87
99
100
100
100
98
93
90
83
96
98
90
81
72
51
27
5
10
15
15
13

High Clouds (% Sky Obscured)

0
0
31
63
92
66
40
16
3
1
1
1
20
25
6
1
30
30
46
25
25
20
20
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
1
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
Snow
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
3
6
21
27
32
31
27
14

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-18
-18
-17
-16
-16
-15
-14
-14
-13
-13
-13
-14
-14
-13
-13
-13
-13
-13
-13
-13
-14
-14
-14
-14

Dew Point (°C)

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

Relative Humidity (%)

72
70
67
66
66
65
67
68
71
71
77
78
81
77
78
80
81
81
83
90
90
90
90
92

Pressure (mb)

1027
1027
1027
1027
1026
1025
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022

Ozone (du)

387
391
387
389
390
389
392
392
391
384
382
382
384
386
382
378
374
372
372
372
373
374
376
376

Monday 9

Third Quarter 41%

01:58

10:31

08 OK
09 OK
10 Good
11 Good
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 OK
04 OK
05 OK
06 Bad
07 Bad

Sun - Rise: 06:58, Set: 17:31, Transit: 12:15. Moon - Rise: 01:58, Set: 10:31. Civil Dark: 17:59 - 06:31. Nautical Dark: 18:30 - 05:59. Astro Dark: 19:02 - 05:27

Total Clouds (% Sky Obscured)

17
15
8
8
56
77
92
100
99
90
100
100
100
100
94
81
71
62
54
38
43
48
77
85

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

0
1
0
0
0
0
0
2
52
64
85
84
89
93
71
40
17
16
15
14
22
31
45
71

High Clouds (% Sky Obscured)

0
0
0
1
5
14
24
29
38
36
70
77
88
100
94
81
71
62
54
38
43
48
60
58

ISS Passover

Visibility (miles)

0
9
9
9
9
9
9
6
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
1
13
0
5
12
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
87
82
77
77
75
70
75
81
90
92
85
83
80
80
78
78
77
77
75
73
72
71
70

Pressure (mb)

1022
1022
1022
1022
1021
1021
1021
1020
1020
1021
1021
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1023

Ozone (du)

375
376
377
378
377
375
374
372
369
368
368
366
364
363
361
358
354
351
349
347
345
343
341
340

Tuesday 10

Waning Crescent 32%

02:59

11:05

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: 06:57, Set: 17:32, Transit: 12:15. Moon - Rise: 02:59, Set: 11:05. Civil Dark: 18:00 - 06:29. Nautical Dark: 18:32 - 05:58. Astro Dark: 19:03 - 05:26

Total Clouds (% Sky Obscured)

91
95
81
68
57
70
80
84
87
90
93
95
96
94
86
74
79
84
92
99
99
98
97
97

Low Clouds (% Sky Obscured)

0
0
8
15
23
30
37
41
41
42
42
47
52
56
61
66
72
73
78
83
68
36
33
45

Medium Clouds (% Sky Obscured)

74
75
63
52
44
40
45
61
71
78
87
89
92
94
86
67
26
15
8
3
8
12
16
39

High Clouds (% Sky Obscured)

57
55
37
17
5
4
5
5
2
3
5
6
6
5
19
35
47
58
73
85
88
93
97
97

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
8
8
8
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
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
2
2
5
6
2
7
10
10
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)

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

Chance of Frost

Temperature (°C)

-9
-7
-6
-4
-3
-1
-1
-1
-1
-2
-3
-3
-4
-4
-4
-4
-5
-5
-5
-5
-5
-5
-5
-5

Feels Like (°C)

-14
-13
-13
-13
-12
-11
-4
-4
-4
-3
-3
-3
-7
-7
-6
-6
-6
-5
-7
-7
-8
-8
-8
-8

Dew Point (°C)

-14
-13
-12
-9
-7
-4
-3
-3
-2
-3
-4
-4
-4
-4
-5
-5
-5
-5
-6
-6
-6
-6
-6
-6

Relative Humidity (%)

67
63
60
68
73
81
84
86
87
89
92
94
96
96
96
96
96
96
96
96
96
96
96
96

Pressure (mb)

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

Ozone (du)

338
337
336
333
330
327
325
323
320
319
318
316
316
315
315
313
310
308
308
309
309
310
311
312

Wednesday 11

Waning Crescent 30%

03:55

11:47

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: 06:56, Set: 17:33, Transit: 12:15. Moon - Rise: 03:55, Set: 11:47. Civil Dark: 18:01 - 06:28. Nautical Dark: 18:33 - 05:56. Astro Dark: 19:04 - 05:25

Total Clouds (% Sky Obscured)

98
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

59
74
83
92
99
100
100
100
100
100
100
96
91
87
77
67
58

Medium Clouds (% Sky Obscured)

63
85
90
93
96
94
92
89
88
89
89
83
78
73
79
88
92

High Clouds (% Sky Obscured)

98
99
99
100
100
89
78
66
44
22
0
14
34
54
90
96
100

ISS Passover

Visibility (miles)

8
9
9
6
3
0
0
0
0
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

Precipitation Type

None
None
None
None
None
Frozen rai
Frozen rai
Frozen rai
None
None
None
None
None
None
None
Frozen rai
Very Light Rain

Precipitation Probability (%)

9
4
24
37
49
57
60
58
47
33
10
19
23
31
46
58
68

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-8
-7
-7
-6
-6
-3
-3
-3
-3
-3
-3
-3
-2
-3
-3
-3

Dew Point (°C)

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

Relative Humidity (%)

94
92
91
94
96
98
100
100
100
100
100
100
100
100
100
98
100

Pressure (mb)

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

Ozone (du)

314
315
317
316
316
315
316
316
317
318
318
319
320
320
321
322
323

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

Generated: 05/02/26 08:51:10. Forecast: 05/02/26 to 11/02/26. Timezone: UTC-5.00