Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 23

Waxing Crescent 25%

10:06

22:30

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

80
85
88
91
97
89
100
99
80
95
91
29
46
20
15
100
98
100
100
90
82
60
96
80

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

80
85
88
91
86
84
100
96
76
94
91
1
29
0
0
0
23
89
100
30
24
14
64
26

High Clouds (% Sky Obscured)

80
85
88
68
84
24
29
73
33
29
74
25
18
20
15
100
97
95
97
81
80
60
93
64

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)

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

Chance of Frost

Temperature (°C)

2
1
-0
-2
-2
-3
-4
-6
-8
-10
-11
-11
-12
-12
-12
-13
-13
-13
-13
-12
-12
-11
-10
-9

Feels Like (°C)

-4
-5
-6
-7
-9
-11
-11
-13
-16
-17
-18
-18
-18
-18
-19
-19
-19
-20
-19
-18
-17
-17
-16
-15

Dew Point (°C)

-11
-12
-13
-13
-14
-16
-15
-18
-22
-24
-24
-24
-25
-25
-25
-25
-25
-25
-25
-24
-24
-25
-25
-25

Relative Humidity (%)

36
37
38
40
40
36
44
37
33
30
32
32
31
31
33
35
35
34
35
35
33
30
27
27

Pressure (mb)

1023
1023
1023
1024
1025
1027
1028
1030
1032
1032
1033
1034
1035
1035
1035
1036
1037
1038
1038
1039
1039
1040
1039
1038

Ozone (du)

350
342
335
330
328
318
316
318
316
312
308
306
307
301
296
294
294
293
290
290
289
289
290
291

Saturday 24

Waxing Crescent 36%

10:32

23:40

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 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)

69
95
99
92
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
2
23
28
13
20
11
30
36
68
75
96
100
99
100
100
100
100
100
100
100
100
95

Medium Clouds (% Sky Obscured)

42
28
96
80
76
80
84
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

28
48
84
29
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
67
97
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
7
9
9
4
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
5
6
25
64
76
91
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.5
0.8
0.8
0.8
1
1.3
1.8
1.9
1.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-10
-10
-10
-10
-10
-10
-10
-9
-9
-9

Feels Like (°C)

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

Dew Point (°C)

-25
-24
-24
-24
-24
-23
-23
-23
-23
-23
-23
-23
-23
-20
-18
-15
-13
-13
-12
-12
-12
-11
-10
-10

Relative Humidity (%)

26
26
27
27
28
28
29
29
29
30
30
30
31
39
51
68
78
81
83
85
87
87
90
90

Pressure (mb)

1038
1037
1037
1038
1038
1038
1038
1038
1038
1038
1037
1037
1037
1036
1036
1035
1035
1034
1034
1033
1032
1030
1028
1026

Ozone (du)

290
290
289
289
289
290
290
289
290
288
287
288
291
291
293
293
292
292
292
292
290
290
289
288

Sunday 25

First Quarter 47%

11:02

00:53

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 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
100
100
100
97
95
91
91
91
92
89

Low Clouds (% Sky Obscured)

96
89
90
100
90
87
90
89
84
100
95
100
100
100
100
100
100
94
87
81
82
84
85
82

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
96
93
79
100
97
94
92
88
95
91
91
17
14
12

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
91
25
20
1
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
3
3

Fog (%)

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

Precipitation Type

Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Ice pellet
Ice pellet
Snow
Snow
Snow
Snow
None
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
62
59
43
57
56
59
61
68
53
32
16
24

Precipitation Amount (mm)

1.9
1.4
1.9
1.6
1.1
1.7
1.7
1.5
1.2
1.4
1.9
0.7
0.2
0.2
0
0.3
0.2
0.3
0.3
0.4
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
94
94
94
92
90
94
92
92
92
90
90
92
92
92
92
92
94
94
92
92
92
89
87

Pressure (mb)

1025
1022
1020
1019
1018
1017
1015
1013
1011
1009
1010
1008
1007
1007
1007
1007
1007
1008
1008
1009
1009
1009
1009
1009

Ozone (du)

288
288
288
286
285
285
286
285
285
287
287
288
288
288
289
291
290
292
297
303
309
311
319
329

Monday 26

Waxing Gibbous 59%

11:40

02:09

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

88
88
76
36
33
67
77
18
10
5
3
3
1
1
2
1
2
1
4
3
4
12
20
19

Low Clouds (% Sky Obscured)

83
83
62
23
13
13
13
13
9
5
2
2
1
1
1
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

69
7
13
16
25
52
56
5
0
0
0
0
0
0
0
0
0
0
0
0
1
8
15
14

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

3
4
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 (%)

21
5
4
2
1
4
4
2
4
2
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)

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

Chance of Frost

Temperature (°C)

-3
-3
-4
-5
-7
-8
-9
-9
-10
-11
-11
-12
-13
-13
-14
-14
-15
-15
-15
-13
-12
-10
-9
-8

Feels Like (°C)

-8
-8
-9
-10
-10
-11
-13
-14
-14
-14
-15
-16
-17
-18
-18
-18
-18
-19
-18
-17
-15
-14
-14
-14

Dew Point (°C)

-5
-5
-6
-8
-9
-10
-11
-12
-12
-13
-14
-15
-15
-16
-17
-17
-17
-18
-17
-15
-14
-13
-12
-11

Relative Humidity (%)

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

Pressure (mb)

1010
1010
1011
1012
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1023
1024
1024
1025
1025
1025
1025
1025
1024
1022

Ozone (du)

337
346
350
356
357
360
362
366
371
373
378
380
384
391
393
395
396
389
387
381
378
376
377
372

Tuesday 27

Waxing Gibbous 70%

12:28

03:25

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

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)

20
14
19
60
65
70
51
59
64
60
72
50
29
8
10
14
17
14
8
5
5
5
5
19

Low Clouds (% Sky Obscured)

0
0
19
47
65
50
30
10
7
3
0
19
11
2
2
2
2
5
3
2
2
2
2
7

Medium Clouds (% Sky Obscured)

10
1
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)

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
7
9
5
3
2
2
3
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
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
10
10
8
7
6
5
5
6
6
5
5
7
6
6
7
7
8
9
10
10
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
83
85
88
90
90
92
90
92
92
92
90
88
88
88
86
85
85
85
85
85
85
82
80

Pressure (mb)

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

Ozone (du)

362
353
347
344
342
344
346
346
348
349
355
362
364
367
369
373
377
382
381
380
379
374
370
366

Wednesday 28

Waxing Gibbous 81%

13:27

04:37

14 OK
15 Good
16 Good
17 Good
18 OK
19 Good
20 Good
21 Good
22 Good
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

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)

28
13
4
8
11
8
4
0
5
35
55
73
98
100
100
100
100
100
100
95
95
85
85
84

Low Clouds (% Sky Obscured)

6
0
0
0
0
0
0
0
0
1
6
16
26
47
68
88
100
100
100
95
95
85
85
76

Medium Clouds (% Sky Obscured)

0
0
4
8
11
8
4
0
5
35
55
73
82
86
91
95
100
100
100
95
90
85
85
84

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
5
35
55
73
98
100
100
95
90
90
80
50
25
10
10
4

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
2
3
2
11
10
8
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
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-10
-10
-10
-9
-8
-16
-16
-16
-16
-16
-16
-17
-16
-16
-16
-15
-15
-13
-12
-12
-11
-11
-11

Dew Point (°C)

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

Relative Humidity (%)

82
84
85
87
86
88
88
88
88
88
90
90
90
92
92
92
92
92
88
88
85
85
84
82

Pressure (mb)

1021
1021
1020
1021
1021
1021
1021
1021
1020
1020
1019
1019
1018
1018
1018
1017
1017
1017
1017
1017
1017
1016
1016
1015

Ozone (du)

369
371
373
382
391
400
409
418
427
433
440
447
452
457
462
462
462
462
465
468
471
471
471
471

Thursday 29

Waxing Gibbous 89%

No Rise

05:39

14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 OK
21 OK
22 OK
23 OK
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good

Sun - Rise: 07:10, Set: 17:17, Transit: 12:14. Moon - Rise: No Rise, Set: 05:39. Civil Dark: 17:46 - 06:41. Nautical Dark: 18:19 - 06:09. Astro Dark: 18:50 - 05:37

Total Clouds (% Sky Obscured)

80
85
75
63
51
39
28
16
13
10
8
6
6
5
5
5
5

Low Clouds (% Sky Obscured)

62
68
64
60
51
39
28
16
13
9
3
3
3
3
3
4
5

Medium Clouds (% Sky Obscured)

80
85
67
49
33
22
13
2
1
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

3
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

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
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

13
9
15
11
1
1
1
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

Wind Speed/Direction (mph)

9
9
9
9
8
8
8
8
8
8
8
8
8
8
9
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-9
-9
-9
-9
-9
-13
-14
-14
-14
-15
-15
-17
-17
-17
-17
-17

Dew Point (°C)

-8
-7
-7
-9
-10
-12
-12
-13
-14
-15
-15
-16
-16
-16
-16
-17
-17

Relative Humidity (%)

85
87
89
87
88
86
88
86
86
86
86
86
86
86
84
84
86

Pressure (mb)

1015
1015
1015
1015
1016
1017
1017
1018
1018
1019
1019
1020
1020
1020
1021
1021
1022

Ozone (du)

473
476
478
481
484
487
478
470
461
446
432
417
405
394
382
379
376

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

Generated: 23/01/26 14:43:43. Forecast: 23/01/26 to 29/01/26. Timezone: UTC-5.00