Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 18

Waxing Crescent 6%

07:59

23:01

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

Sun - Rise: 05:42, Set: 20:12, Transit: 12:57. Moon - Rise: 07:59, Set: 23:01. Civil Dark: 20:43 - 05:11. Nautical Dark: 21:22 - 04:32. Astro Dark: 22:05 - 03:49

Total Clouds (% Sky Obscured)

64
54
49
37
18
19
0
0
0
0
17
25
23
28
22
17
4
4
64
67
64
72
34
46

Low Clouds (% Sky Obscured)

0
0
0
8
0
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

16
25
42
25
15
3
0
0
0
0
0
0
1
0
7
1
3
1
0
0
0
0
0
1

High Clouds (% Sky Obscured)

20
8
0
6
0
0
0
0
0
0
11
17
19
24
18
16
4
4
53
52
55
57
34
46

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
6
20
34
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
6
7
9
10
10
9
8
7
6
6
5
5
5
4
5
4
4
4
4
5
6
7
7

Chance of Frost

Temperature (°C)

31
32
33
34
34
34
33
31
29
27
26
25
24
23
22
22
21
21
20
21
23
25
28
30

Feels Like (°C)

33
34
34
35
34
34
34
33
31
30
28
27
26
25
25
24
24
24
23
25
26
28
29
31

Dew Point (°C)

16
15
15
15
15
16
17
17
17
17
17
18
18
18
19
19
19
18
18
18
18
17
16
16

Relative Humidity (%)

40
36
34
32
32
34
37
41
49
56
60
65
69
73
81
81
85
85
86
83
73
60
50
44

Pressure (mb)

1021
1021
1020
1020
1019
1019
1019
1019
1020
1020
1021
1021
1021
1021
1021
1020
1020
1020
1020
1021
1021
1021
1021
1021

Ozone (du)

319
319
319
319
320
321
322
324
325
325
322
321
319
319
317
316
318
317
317
318
321
321
320
320

Tuesday 19

Waxing Crescent 13%

09:14

23:58

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

Sun - Rise: 05:41, Set: 20:13, Transit: 12:57. Moon - Rise: 09:14, Set: 23:58. Civil Dark: 20:44 - 05:10. Nautical Dark: 21:23 - 04:31. Astro Dark: 22:06 - 03:48

Total Clouds (% Sky Obscured)

66
54
86
79
86
65
45
56
35
57
59
61
74
63
30
46
51
41
4
5
3
29
17
44

Low Clouds (% Sky Obscured)

0
1
13
6
6
10
33
2
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
15

Medium Clouds (% Sky Obscured)

11
5
15
13
53
45
45
56
35
57
59
61
74
63
18
46
51
41
4
3
3
0
0
22

High Clouds (% Sky Obscured)

65
54
53
43
40
35
9
40
35
40
50
46
45
45
3
0
2
2
2
3
1
21
17
1

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 (%)

2
7
4
4
0
5
7
6
0
1
0
0
0
0
12
1
6
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
9
10
11
12
11
13
10
5
5
6
7
7
8
7
6
7
7
5
5
6
6
8
10

Chance of Frost

Temperature (°C)

32
34
35
35
34
34
33
31
29
28
27
26
25
25
24
23
23
23
22
22
25
27
29
31

Feels Like (°C)

32
33
34
34
33
33
32
30
29
28
26
26
26
25
24
25
24
23
23
24
26
29
29
32

Dew Point (°C)

16
17
17
17
18
17
20
18
16
15
15
15
17
18
18
18
17
16
16
16
16
16
17
17

Relative Humidity (%)

39
36
34
34
37
36
45
45
44
45
47
49
58
64
67
72
67
66
68
67
60
52
46
43

Pressure (mb)

1020
1019
1019
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1017
1017
1016
1016

Ozone (du)

319
318
317
316
315
315
315
315
314
313
313
311
309
309
309
310
311
311
312
313
315
314
314
315

Wednesday 20

Waxing Crescent 23%

10:30

00:42

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
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:40, Set: 20:14, Transit: 12:58. Moon - Rise: 10:30, Set: 00:42. Civil Dark: 20:45 - 05:09. Nautical Dark: 21:24 - 04:30. Astro Dark: 22:07 - 03:46

Total Clouds (% Sky Obscured)

39
60
72
92
100
87
100
97
91
100
100
100
100
100
96
91
100
98
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

19
7
0
47
50
39
59
42
0
0
0
6
0
0
15
12
6
10
10
10
10
10
10
11

Medium Clouds (% Sky Obscured)

11
26
28
28
21
49
89
70
51
78
72
76
89
96
95
88
99
97
98
100
100
100
100
100

High Clouds (% Sky Obscured)

9
39
39
81
81
77
100
85
82
100
100
100
100
100
42
31
100
94
97
92
81
72
65
77

ISS Passover

Visibility (miles)

9
9
9
9
9
9
2
4
3
3
9
7
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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain

Precipitation Probability (%)

2
3
23
53
54
95
95
95
95
95
75
51
18
19
5
1
0
0
1
4
18
9
14
43

Precipitation Amount (mm)

0
0
0
0.2
0.3
0.7
0.9
0.3
0.4
0.5
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0.2

Wind Speed/Direction (mph)

11
12
13
14
13
9
14
9
9
9
7
7
8
8
8
8
8
8
8
8
9
9
7
8

Chance of Frost

Temperature (°C)

32
33
34
33
31
29
26
24
23
21
20
19
18
17
16
16
15
15
14
14
14
14
15
15

Feels Like (°C)

33
34
34
34
31
30
27
26
24
22
21
19
17
16
14
14
13
11
11
11
10
11
12
13

Dew Point (°C)

18
18
19
18
15
16
21
23
21
20
19
17
16
14
12
10
6
3
3
3
5
6
8
10

Relative Humidity (%)

42
41
42
39
38
45
76
91
89
92
92
91
89
85
77
69
54
46
46
47
52
57
61
69

Pressure (mb)

1015
1015
1014
1014
1014
1014
1015
1015
1017
1018
1019
1020
1020
1020
1020
1021
1021
1022
1023
1023
1024
1024
1025
1025

Ozone (du)

316
317
317
318
316
315
313
312
310
309
311
314
316
315
316
316
316
316
316
315
314
314
313
314

Thursday 21

Waxing Crescent 33%

11:44

01:17

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
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:39, Set: 20:15, Transit: 12:58. Moon - Rise: 11:44, Set: 01:17. Civil Dark: 20:46 - 05:08. Nautical Dark: 21:25 - 04:29. Astro Dark: 22:09 - 03:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
92
79
59
62
63
70
78
88
99
96
93
90
94
97
100
99

Low Clouds (% Sky Obscured)

13
14
13
31
40
45
45
17
23
9
9
3
8
14
23
20
15
10
5
2
3
0
0
8

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
82
63
55
50
63
59
58
63
66
68
68
71
81
90
100
96

High Clouds (% Sky Obscured)

87
100
100
100
100
100
100
100
73
46
19
31
47
54
66
81
96
87
80
72
74
37
39
26

ISS Passover

Visibility (miles)

6
9
3
8
5
6
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

Very Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

50
65
84
47
56
39
29
26
9
4
1
0
1
0
3
5
6
8
8
6
4
6
3
10

Precipitation Amount (mm)

0.3
0.4
0.9
0.2
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
14
14
14
14
14
14
14
13
13
12
12
12
12
11
11
11
12
12
12
13
13
14

Dew Point (°C)

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

Relative Humidity (%)

78
84
86
90
87
90
89
89
90
92
92
93
93
92
92
90
88
88
89
87
81
71
63
58

Pressure (mb)

1025
1025
1025
1025
1025
1024
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1028
1028
1028
1028

Ozone (du)

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

Friday 22

Waxing Crescent 45%

No Rise

01:45

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
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:39, Set: 20:16, Transit: 12:58. Moon - Rise: No Rise, Set: 01:45. Civil Dark: 20:47 - 05:07. Nautical Dark: 21:26 - 04:28. Astro Dark: 22:10 - 03:44

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)

15
23
15
8
0
23
45
68
71
75
78
85
93
100
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

90
97
100
97
100
100
100
100
100
100
100
98
97
95
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

34
88
90
73
85
94
95
68
88
83
79
83
90
98
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
7
8
9
9
9
9
7
5
3

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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

14
19
41
53
62
60
56
48
54
64
69
73
69
85
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0.2
0.3
0.2
0
0
0
0.3
0.3
0.4
0.3
0.6
1.1
1.2
1.4
1.2
0.9
0.6
0.7
0.7
0.7
1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
17
16
15
14
14
14
13
12
12
12
11
11
11
10
10
10
10
10
10
10
11
11

Feels Like (°C)

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

Dew Point (°C)

7
8
8
10
11
10
10
9
9
8
8
8
8
8
9
9
9
9
9
10
10
10
10
10

Relative Humidity (%)

51
54
55
66
78
74
73
75
76
76
75
76
83
84
88
90
91
91
93
95
95
95
95
96

Pressure (mb)

1028
1027
1027
1027
1027
1027
1027
1027
1028
1028
1028
1029
1028
1028
1028
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

323
322
322
322
324
325
325
323
322
322
323
323
324
325
323
323
323
323
322
322
322
322
321
321

Saturday 23

First Quarter 56%

12:54

02:09

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
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:38, Set: 20:17, Transit: 12:58. Moon - Rise: 12:54, Set: 02:09. Civil Dark: 20:48 - 05:07. Nautical Dark: 21:27 - 04:27. Astro Dark: 22:12 - 03:43

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)

100
100
98
94
91
92
94
95
95
94
94
95
97
98
99
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

100
100
100
100
100
98
96
93
93
93
93
92
85
78
74
70
67
45
24
2
2
2
6
10

High Clouds (% Sky Obscured)

100
100
100
100
100
97
94
91
94
97
100
94
84
73
51
27
6
35
64
93
85
79
82
86

ISS Passover

Visibility (miles)

4
5
6
5
4
4
3
2
1
1
1
1
1
1
1
3
6
8
8
8
8
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

Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
95
92
75
57
32
26
22
18
21
22
22
23

Precipitation Amount (mm)

1
1.3
1.7
2.2
2.8
2.3
2.1
2
2
2
1.8
1.3
0.8
0.4
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
10
9
9
9
9
9
9
9
8
8
8
8
7
7
7
7
8
8
8
8
9
9
9

Chance of Frost

Temperature (°C)

11
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
11
12
12
12
12
13
14

Feels Like (°C)

8
8
8
8
8
8
8
8
7
8
9
9
9
9
9
9
10
10
10
10
10
11
11
11

Dew Point (°C)

10
10
10
10
10
10
10
10
10
10
11
11
10
11
11
11
11
11
11
11
11
12
12
12

Relative Humidity (%)

95
95
96
96
96
96
96
98
98
96
98
98
96
98
98
98
98
98
98
96
96
95
93
90

Pressure (mb)

1027
1027
1027
1026
1026
1026
1026
1026
1025
1026
1026
1026
1026
1025
1025
1025
1025
1025
1026
1026
1027
1027
1027
1027

Ozone (du)

320
320
319
318
318
317
318
319
320
322
323
325
326
328
329
329
328
328
328
327
327
326
325
324

Sunday 24

Waxing Gibbous 66%

14:00

02:30

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: 05:37, Set: 20:18, Transit: 12:58. Moon - Rise: 14:00, Set: 02:30. Civil Dark: 20:49 - 05:06. Nautical Dark: 21:28 - 04:26. Astro Dark: 22:13 - 03:42

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
97
94
92
95
98
100
99
99
100

Medium Clouds (% Sky Obscured)

9
13
12
11
10
19
29
37
52
68
84
89
95
99
99
100
99
99
98
98

High Clouds (% Sky Obscured)

83
76
73
70
65
44
23
11
20
39
68
83
79
60
35
15
15
27
41
57

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
7
5
2
2
1
0
0
0

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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

22
20
19
16
12
10
7
1
2
1
0
18
33
48
57
62
64
59
56
55

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.4
0.4
0.3
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
15
16
16
16
16
15
15
14
14
14
13
13
13
13
13
13
13
13
13

Feels Like (°C)

11
11
12
15
15
14
14
14
14
12
12
12
13
13
13
12
12
12
12
12

Dew Point (°C)

12
12
12
12
12
12
12
12
12
12
12
12
12
12
13
12
13
13
13
13

Relative Humidity (%)

84
80
75
75
78
78
80
82
84
86
87
90
92
95
98
96
98
98
98
98

Pressure (mb)

1027
1027
1027
1027
1027
1026
1027
1027
1027
1027
1027
1028
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

324
324
324
323
321
320
320
319
319
319
318
318
317
317
316
316
315
315
316
316

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

Generated: 18/05/26 12:34:56. Forecast: 18/05/26 to 24/05/26. Timezone: UTC-4.00