Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 22

Waxing Crescent 25%

09:43

21:22

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
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

Sun - Rise: 07:16, Set: 17:09, Transit: 12:13. Moon - Rise: 09:43, Set: 21:22. Civil Dark: 17:38 - 06:47. Nautical Dark: 18:11 - 06:14. Astro Dark: 18:43 - 05:42

Total Clouds (% Sky Obscured)

76
81
85
100
100
100
94
81
42
29
73
65
96
100
100
100
100
100
90
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
1
15
12
0

Medium Clouds (% Sky Obscured)

71
81
85
100
100
100
94
81
34
10
1
29
85
100
100
100
100
100
58
76
100
100
100
100

High Clouds (% Sky Obscured)

76
81
85
100
100
25
25
1
1
16
68
59
94
100
93
100
100
100
79
87
100
100
100
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 (%)

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
8
6
8
8
8
8
7
6
5
5
5
6
6
7
6
7
9
11
12
13
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-1
-5
-7
-7
-8
-8
-7
-7
-7
-7
-7
-8
-9
-9
-10
-10
-10
-10
-10
-10
-10
-11
-13
-14

Relative Humidity (%)

62
56
55
54
54
55
59
62
64
66
66
63
58
56
55
53
51
48
47
43
42
38
34
35

Pressure (mb)

1019
1020
1021
1021
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1024
1025
1025
1025
1024
1024
1023
1024
1024

Ozone (du)

354
358
364
369
371
370
371
368
363
360
358
356
354
353
348
342
337
336
344
354
360
356
348
343

Friday 23

Waxing Crescent 36%

10:06

22:30

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 OK
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 OK
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:15, Set: 17:10, Transit: 12:13. Moon - Rise: 10:06, Set: 22:30. Civil Dark: 17:39 - 06:46. Nautical Dark: 18:12 - 06:13. Astro Dark: 18:44 - 05:41

Total Clouds (% Sky Obscured)

98
99
99
100
100
70
99
96
88
81
50
54
38
100
100
100
100
100
46
51
97
100
100
100

Low Clouds (% Sky Obscured)

0
2
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
0
0
2
17
12

Medium Clouds (% Sky Obscured)

98
99
98
99
100
70
98
79
28
24
29
33
1
40
33
20
72
70
33
48
77
88
89
97

High Clouds (% Sky Obscured)

65
51
5
66
40
23
93
76
40
34
5
13
38
92
58
90
81
91
23
27
86
95
88
97

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

Chance of Frost

Temperature (°C)

-2
-3
-4
-6
-7
-9
-10
-11
-11
-12
-13
-13
-13
-13
-13
-13
-13
-12
-11
-10
-10
-9
-9
-9

Feels Like (°C)

-8
-10
-11
-13
-15
-16
-18
-18
-18
-19
-19
-18
-18
-19
-20
-20
-19
-18
-17
-15
-15
-14
-14
-14

Dew Point (°C)

-13
-16
-15
-18
-21
-22
-24
-24
-24
-24
-24
-25
-25
-25
-25
-25
-25
-25
-25
-25
-24
-24
-24
-24

Relative Humidity (%)

41
36
41
35
32
32
32
32
34
36
36
35
35
35
35
35
34
33
31
30
28
28
28
28

Pressure (mb)

1025
1027
1028
1030
1031
1032
1033
1034
1035
1035
1035
1036
1036
1037
1038
1039
1039
1040
1040
1039
1038
1038
1038
1037

Ozone (du)

341
337
326
325
321
319
316
312
306
305
299
296
295
295
299
299
299
299
297
295
294
293
293
294

Saturday 24

Waxing Crescent 34%

10:32

23:40

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

Sun - Rise: 07:14, Set: 17:12, Transit: 12:13. Moon - Rise: 10:32, Set: 23:40. Civil Dark: 17:40 - 06:45. Nautical Dark: 18:13 - 06:13. Astro Dark: 18:45 - 05:41

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

35
25
20
20
20
15
32
77
75
93
96
100
100
100
100
100
100
100
100
100
97
94
92
94

Medium Clouds (% Sky Obscured)

96
94
100
100
100
100
100
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
95
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
6
9
4
4
1
0
0
0
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
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

0
0
0
2
14
4
22
34
54
67
89
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0.3
0.6
0.7
0.6
0.8
0.9
1.3
1.2
0.9
1.3
0.8
0.6
0.6
0.8
1

Wind Speed/Direction (mph)

7
6
6
5
5
5
5
5
4
5
5
6
7
8
8
9
9
9
9
9
11
11
12
12

Chance of Frost

Temperature (°C)

-9
-9
-9
-9
-8
-8
-9
-9
-9
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-9
-9
-9
-9
-9

Feels Like (°C)

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

Dew Point (°C)

-23
-23
-23
-23
-22
-22
-20
-18
-14
-13
-13
-12
-12
-12
-12
-12
-12
-12
-11
-11
-11
-10
-10
-10

Relative Humidity (%)

29
29
30
30
31
33
38
49
66
78
81
83
85
85
85
86
86
86
88
88
88
92
92
92

Pressure (mb)

1037
1038
1038
1038
1038
1037
1037
1037
1037
1037
1036
1035
1034
1033
1033
1032
1032
1031
1030
1028
1025
1023
1021
1019

Ozone (du)

293
292
289
289
289
291
291
292
292
291
291
290
291
291
290
289
289
289
289
290
290
287
286
286

Sunday 25

First Quarter 47%

11:02

00:53

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

Sun - Rise: 07:13, Set: 17:13, Transit: 12:14. Moon - Rise: 11:02, Set: 00:53. Civil Dark: 17:42 - 06:45. Nautical Dark: 18:14 - 06:12. Astro Dark: 18:46 - 05:40

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
91
86
84
79
76
81
88
93
89

Low Clouds (% Sky Obscured)

97
100
100
100
100
100
100
100
100
100
100
97
92
89
86
81
76
73
70
69
74
78
83
78

Medium Clouds (% Sky Obscured)

100
100
100
100
100
99
98
96
93
91
92
93
97
81
84
66
50
39
9
0
13
17
23
25

High Clouds (% Sky Obscured)

100
100
100
100
100
67
37
10
10
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

95
95
95
95
88
82
79
95
95
95
95
95
68
44
43
45
47
39
28
29
33
40
39
39

Precipitation Amount (mm)

1
0.9
0.7
0.6
0.4
0.4
0.4
1.1
1.2
1
0.9
0.9
0.4
0.1
0.1
0.1
0.1
0
0
0
0
0.1
0.1
0.1

Wind Speed/Direction (mph)

12
13
13
13
13
13
13
11
10
10
9
9
8
9
8
8
8
9
10
10
11
11
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
90
92
92
90
92
92
92
92
92
92
92
92
92
90
92
92
94
92
90
92
92
94
94

Pressure (mb)

1018
1018
1016
1015
1013
1012
1010
1009
1008
1007
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1006
1007
1008
1009

Ozone (du)

285
285
285
285
285
286
285
285
288
290
293
294
295
296
297
298
297
298
301
301
303
306
312
316

Monday 26

Waxing Gibbous 59%

11:40

02:09

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

Sun - Rise: 07:13, Set: 17:14, Transit: 12:14. Moon - Rise: 11:40, Set: 02:09. Civil Dark: 17:43 - 06:44. Nautical Dark: 18:15 - 06:11. Astro Dark: 18:47 - 05:39

Total Clouds (% Sky Obscured)

85
81
87
93
98
88
79
58
25
14
5
5
5
4
6
7
8
9
7
8
17
24
23
27

Low Clouds (% Sky Obscured)

73
68
55
43
30
20
10
0
0
0
0
0
0
0
0
0
0
0
1
2
6
5
0
3

Medium Clouds (% Sky Obscured)

27
25
49
71
97
87
79
54
19
8
0
0
0
0
0
0
0
0
0
0
0
0
0
2

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)

0
0
0
0
1
1
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

Snow
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 (%)

37
30
24
20
8
4
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.1
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
10
12
12
12
13
13
13
12
12
12
11
9
7
5
6
7
8
8
9
9
9
10
10

Chance of Frost

Temperature (°C)

-6
-6
-7
-8
-9
-10
-11
-11
-12
-12
-13
-14
-15
-15
-17
-15
-13
-11
-10
-9
-8
-7
-7
-7

Feels Like (°C)

-10
-11
-12
-13
-14
-15
-17
-17
-17
-17
-17
-18
-18
-19
-19
-19
-18
-18
-17
-16
-15
-10
-10
-11

Dew Point (°C)

-6
-7
-8
-9
-10
-12
-13
-14
-14
-15
-16
-17
-17
-18
-19
-17
-16
-14
-13
-12
-10
-10
-9
-9

Relative Humidity (%)

96
94
92
92
90
87
85
81
81
81
81
79
79
81
83
82
81
80
80
80
80
82
83
83

Pressure (mb)

1010
1011
1013
1014
1015
1017
1018
1019
1020
1022
1023
1024
1024
1025
1026
1026
1026
1026
1025
1024
1023
1022
1022
1021

Ozone (du)

322
334
353
365
372
378
377
380
378
373
370
357
356
352
350
348
346
344
343
343
342
342
343
343

Tuesday 27

Waxing Gibbous 70%

12:28

03:25

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

Sun - Rise: 07:12, Set: 17:15, Transit: 12:14. Moon - Rise: 12:28, Set: 03:25. Civil Dark: 17:44 - 06:43. Nautical Dark: 18:16 - 06:11. Astro Dark: 18:48 - 05:39

Total Clouds (% Sky Obscured)

31
54
60
64
67
63
59
55
39
22
1
0
0
0
3
5
8
34
40
52
54
67
87
81

Low Clouds (% Sky Obscured)

6
9
27
45
63
62
59
55
39
21
0
0
0
0
3
5
8
11
14
17
32
47
62
47

Medium Clouds (% Sky Obscured)

4
5
1
0
0
0
0
0
1
1
1
0
0
0
0
0
0
33
40
30
12
4
3
2

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

8
7
6
5
4
3
5
7
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
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
6
8
9
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-11
-11
-11
-13
-12
-12
-13
-14
-14
-12
-12
-12
-12
-12
-12
-13
-13
-12
-11
-11
-11
-9
-9
-9

Dew Point (°C)

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

Relative Humidity (%)

87
90
92
92
92
92
90
88
87
85
87
87
87
85
85
85
85
85
84
82
82
84
82
84

Pressure (mb)

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

Ozone (du)

344
344
344
344
344
343
343
342
342
344
346
347
353
358
364
364
364
364
361
357
353
357
361
365

Wednesday 28

Waxing Gibbous 81%

13:27

04:37

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:11, Set: 17:16, Transit: 12:14. Moon - Rise: 13:27, Set: 04:37. Civil Dark: 17:45 - 06:42. Nautical Dark: 18:17 - 06:10. Astro Dark: 18:49 - 05:38

Total Clouds (% Sky Obscured)

76
70
80
90
95
92
92
94
90
85
86
90
91
97
92
89
91
90
89
88

Low Clouds (% Sky Obscured)

33
9
10
11
10
16
27
46
43
26
5
11
21
24
17
11
4
11
18
26

Medium Clouds (% Sky Obscured)

1
0
3
6
8
32
56
81
81
81
81
81
87
92
88
85
85
77
76
65

High Clouds (% Sky Obscured)

0
0
4
4
10
10
10
5
5
4
0
0
0
0
0
10
20
64
56
46

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3

Fog (%)

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

Precipitation Probability (%)

6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
12
18
23

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-9
-9
-16
-16
-16
-16
-17
-17
-14
-14
-14
-14
-14
-14
-14
-14
-14
-14
-13

Dew Point (°C)

-10
-12
-13
-14
-14
-14
-13
-12
-11
-12
-12
-12
-13
-13
-13
-12
-11
-10
-9
-7

Relative Humidity (%)

85
87
90
90
90
88
90
90
92
90
90
92
90
90
90
88
85
83
85
89

Pressure (mb)

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

Ozone (du)

373
381
389
403
417
431
433
435
436
430
423
416
413
410
407
409
412
414
408
401

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

Generated: 22/01/26 16:46:17. Forecast: 22/01/26 to 28/01/26. Timezone: UTC-5.00