Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 21

Waxing Crescent 33%

10:30

01:17

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:40, Set: 20:15, Transit: 12:58. Moon - Rise: 10:30, Set: 01:17. Civil Dark: 20:46 - 05:09. Nautical Dark: 21:25 - 04:30. Astro Dark: 22:09 - 03:46

Total Clouds (% Sky Obscured)

92
94
95
100
100
100
100
99
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

83
83
84
71
47
79
47
79
85
85
83
87
96
98
96
73
81
59
59
62
65
69
78
86

Medium Clouds (% Sky Obscured)

90
85
87
100
100
99
92
93
98
100
100
100
96
100
100
100
100
100
100
98
82
79
83
88

High Clouds (% Sky Obscured)

86
93
95
100
89
97
100
88
67
71
55
33
66
93
100
99
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

8
8
9
9
9
9
9
9
9
9
5
5
3
5
5
3
4
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
Very Light Rain
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

80
26
18
6
16
54
72
59
76
95
95
95
95
88
95
95
76
42
27
8
6
30
30
21

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0
0
0.7
0.9
1.2
0.8
0.6
1.2
1.1
0.5
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
16
15
15
15
16
15
15
15
16
15
14
14
14
14
14
13
13
13
13
13
13
13
12

Feels Like (°C)

18
16
14
14
14
13
11
12
12
13
12
12
12
13
13
13
13
13
13
13
12
12
12
12

Dew Point (°C)

15
14
12
12
10
8
9
9
10
10
12
13
13
13
13
13
13
13
13
13
12
12
12
12

Relative Humidity (%)

88
87
84
82
73
57
68
69
74
67
82
90
92
93
93
95
96
96
96
96
96
95
95
95

Pressure (mb)

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

Ozone (du)

315
315
315
315
316
316
318
316
316
316
316
318
320
320
320
319
321
323
324
324
325
325
326
327

Friday 22

Waxing Crescent 45%

11:44

01:45

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:39, Set: 20:16, Transit: 12:58. Moon - Rise: 11:44, Set: 01:45. Civil Dark: 20:47 - 05:08. Nautical Dark: 21:26 - 04:29. Astro Dark: 22:10 - 03:45

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

85
88
89
91
90
83
79
69
62
58
60
68
70
78
85
90
89
86
87
89
85
86
89
93

Medium Clouds (% Sky Obscured)

71
35
94
93
32
27
30
37
53
100
100
100
100
100
100
99
100
100
100
99
100
100
100
100

High Clouds (% Sky Obscured)

100
100
100
100
100
84
64
100
100
100
100
100
92
58
58
68
100
100
90
100
96
100
98
74

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
1
1
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
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

13
11
7
8
8
5
11
7
22
27
50
51
58
58
58
43
44
76
84
75
80
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.3
0.3
0.6
1.5
1.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
12
12
12
12
13
13
13
14
14
14
14
14
14
14
13
13
13
12
12
12
12
12
12

Feels Like (°C)

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

Dew Point (°C)

12
11
11
11
11
11
11
11
10
10
9
8
6
5
6
6
6
6
6
6
6
6
6
6

Relative Humidity (%)

95
93
95
93
93
90
89
86
80
76
71
66
58
54
58
60
60
62
65
65
67
66
66
66

Pressure (mb)

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

Ozone (du)

328
329
328
329
328
328
327
326
326
326
325
324
324
322
322
321
320
322
323
325
325
326
327
329

Saturday 23

First Quarter 56%

12:54

02:09

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:39, Set: 20:17, Transit: 12:58. Moon - Rise: 12:54, Set: 02:09. Civil Dark: 20:48 - 05:07. Nautical Dark: 21:27 - 04:28. Astro Dark: 22:12 - 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)

94
100
100
100
100
100
100
100
100
100
100
91
100
100
97
100
100
98
96
94
95
95
96
96

Medium Clouds (% Sky Obscured)

100
99
97
97
100
98
100
100
100
100
97
100
96
96
100
100
99
99
99
99
99
100
100
97

High Clouds (% Sky Obscured)

94
88
100
100
100
95
100
99
100
99
97
100
100
96
100
87
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

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

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
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Moderate Rain
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 (%)

95
95
95
95
95
79
85
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0.9
0.7
0.7
0.6
0.6
0.2
0.3
0.7
1.4
0.8
0.3
2.9
1.5
0.9
1.2
1
1.4
0.7
0.9
1.4
1.2
2.1
1.8
1.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
11
10
10
10
10
10
10
10
10
10
11
11
11
11
10
10
10
10
10
11
11
11
11

Feels Like (°C)

9
9
8
8
8
7
7
7
7
7
7
8
8
8
8
7
8
7
7
7
8
8
9
9

Dew Point (°C)

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

Relative Humidity (%)

77
88
90
87
90
90
90
91
91
90
90
88
91
93
95
95
95
96
93
95
96
95
98
98

Pressure (mb)

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

Ozone (du)

328
328
328
326
325
323
324
324
324
323
322
322
321
321
321
320
320
320
321
320
320
320
320
321

Sunday 24

Waxing Gibbous 66%

14:00

02:30

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:38, Set: 20:18, Transit: 12:58. Moon - Rise: 14:00, Set: 02:30. Civil Dark: 20:49 - 05:07. Nautical Dark: 21:28 - 04:27. Astro Dark: 22:13 - 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)

96
96
98
99
100
100
100
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99

Medium Clouds (% Sky Obscured)

95
91
97
98
99
99
100
100
94
35
38
35
26
18
13
7
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
80
100
73
47
25
25
30
20
37
60
72
84
93
100
98

ISS Passover

Visibility (miles)

5
8
9
9
2
1
2
2
2
6
8
8
1
0
1
2
2
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

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

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
50
24
17
12
3
3
2
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

1
0.6
0.5
1.4
3.7
2.9
1.2
0.8
1.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
11
11
12
12
12
12
13
13
12
12
13
13
13
13
13
13
13
12
12
12
12
12
12

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
11
12
12
12
12
12
12
12
13
13
13
13
13
12
12
12
12
12
11
12

Relative Humidity (%)

98
98
96
96
96
96
96
96
96
96
96
96
98
96
96
96
98
96
96
96
96
96
95
96

Pressure (mb)

1025
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

322
321
320
323
327
325
328
330
335
335
332
330
328
326
324
323
324
324
323
323
323
322
321
320

Monday 25

Waxing Gibbous 76%

15:03

02:52

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:37, Set: 20:18, Transit: 12:58. Moon - Rise: 15:03, Set: 02:52. Civil Dark: 20:50 - 05:06. Nautical Dark: 21:30 - 04:26. Astro Dark: 22:14 - 03:42

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

98
97
94
92
89
86
82
79
72
64
57
94
88
78
71
64
57
65
67
70
65
61
57
49

Medium Clouds (% Sky Obscured)

3
20
33
45
45
62
75
86
77
70
60
100
100
100
99
98
99
99
99
98
87
83
73
74

High Clouds (% Sky Obscured)

96
95
96
98
100
96
93
90
90
92
94
98
97
97
97
98
96
92
87
94
90
86
81
88

ISS Passover

Visibility (miles)

9
9
9
7
9
9
7
8
3
7
3
6
7
8
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
None
Very 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 (%)

1
19
37
49
53
65
77
85
82
95
95
95
88
72
58
44
21
17
12
2
2
2
2
7

Precipitation Amount (mm)

0
0
0
0.2
0
0.3
0.4
0.7
0.6
0.8
0.7
0.7
0.6
0.4
0.2
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
96
96
95
96
96
96
96
95
96
98
96
96
96
98
96
96
98
98
98
98
96

Pressure (mb)

1024
1024
1024
1024
1025
1025
1025
1025
1024
1024
1024
1024
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1020

Ozone (du)

320
320
320
321
323
324
324
323
324
325
325
325
326
327
328
328
328
328
328
327
327
328
328
329

Tuesday 26

Waxing Gibbous 84%

16:06

No Set

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:37, Set: 20:19, Transit: 12:58. Moon - Rise: 16:06, Set: No Set. Civil Dark: 20:51 - 05:05. Nautical Dark: 21:31 - 04:26. Astro Dark: 22:16 - 03:41

Total Clouds (% Sky Obscured)

99
100
100
100
100
98
96
94
96
99
100
100
100
100
100
100
100
100
100
100
89
80
70
66

Low Clouds (% Sky Obscured)

47
49
47
45
44
35
25
16
21
25
28
29
32
39
29
19
8
5
3
0
1
0
0
1

Medium Clouds (% Sky Obscured)

72
73
81
90
100
96
92
88
82
60
51
33
17
2
1
1
0
0
0
4
8
7
10
8

High Clouds (% Sky Obscured)

94
100
68
35
3
7
12
46
75
94
100
100
100
100
100
98
94
96
96
100
89
80
70
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 (%)

8
5
10
11
11
22
24
27
25
20
6
32
25
6
12
14
14
14
12
1
1
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)

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

Chance of Frost

Temperature (°C)

14
14
14
15
15
16
18
20
21
23
24
25
25
25
25
24
23
22
21
20
19
19
18
18

Feels Like (°C)

15
15
15
15
14
15
17
18
18
19
20
21
28
27
26
27
27
27
22
22
22
22
21
21

Dew Point (°C)

14
14
14
14
14
15
15
15
15
15
15
15
15
15
15
15
16
17
17
17
17
16
15
14

Relative Humidity (%)

98
98
98
96
93
92
82
74
66
61
56
51
51
52
51
58
64
73
76
82
88
85
82
79

Pressure (mb)

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

Ozone (du)

330
330
331
331
331
331
331
331
330
331
332
333
333
334
335
337
339
340
340
340
340
341
341
342

Wednesday 27

Waxing Gibbous 90%

17:08

03:14

Sun - Rise: 05:36, Set: 20:20, Transit: 12:58. Moon - Rise: 17:08, Set: 03:14. Civil Dark: 20:52 - 05:05. Nautical Dark: 21:32 - 04:25. Astro Dark: 22:17 - 03:40

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 21/05/26 03:05:56. Forecast: 21/05/26 to 27/05/26. Timezone: UTC-4.00