Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 2%

07:01

15:03

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
03 Bad

Sun - Rise: 07:46, Set: 16:29, Transit: 12:08. Moon - Rise: 07:01, Set: 15:03. Civil Dark: 17:03 - 07:12. Nautical Dark: 17:41 - 06:35. Astro Dark: 18:17 - 05:59

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
100
79
79
87

Low Clouds (% Sky Obscured)

100
100
100
100
95
93
90
90
92
91
94
94
88
94
94
93
90
96
86
80
84
66
66
57

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
100
94
93
64
21
29

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
41
3
60
40
1
0

ISS Passover

Visibility (miles)

6
4
2
2
3
2
3
2
1
1
2
2
2
1
2
4
2
4
7
9
7
9
9
6

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

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

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
81
64
57
48
44
53

Precipitation Amount (mm)

4.4
2.8
0.2
2.4
2.8
2.8
2.4
3.6
5.1
6.3
3.8
3.5
3.4
4.5
2
1.4
1.7
1
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
6
6
7
6
6
5
4
5
5
10
16
15
15
14
13
10
11
10
10
8
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
4
4
4
5
4
4
5
5
7
10
11
11
12
12
12
10
9
8
7
6
5
5
4

Relative Humidity (%)

83
88
90
90
93
91
93
94
96
98
98
95
90
92
90
90
90
84
84
81
85
85
87
85

Pressure (mb)

1014
1013
1012
1011
1008
1007
1006
1005
1003
1001
999
998
998
997
997
997
997
998
1000
1001
1003
1004
1005
1006

Ozone (du)

323
322
324
323
320
317
315
312
311
310
308
306
302
301
302
307
311
317
320
324
326
331
334
336

Friday 19

New Moon 0%

08:00

15:51

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
03 Bad

Sun - Rise: 07:47, Set: 16:30, Transit: 12:08. Moon - Rise: 08:00, Set: 15:51. Civil Dark: 17:04 - 07:13. Nautical Dark: 17:41 - 06:35. Astro Dark: 18:17 - 05:59

Total Clouds (% Sky Obscured)

98
92
82
51
95
93
90
99
79
75
70
71
83
73
85
81
77
94
95
94
93
98
100
97

Low Clouds (% Sky Obscured)

47
43
30
13
65
86
75
76
73
67
59
46
62
73
80
76
68
83
87
89
91
95
84
87

Medium Clouds (% Sky Obscured)

45
52
53
51
42
40
71
96
62
67
65
64
66
16
40
63
40
81
83
84
71
83
98
70

High Clouds (% Sky Obscured)

0
0
0
3
24
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

6
9
9
9
9
9
9
9
8
9
9
7
8
9
9
9
9
9
9
8
9
9
7
7

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

Precipitation Probability (%)

46
31
31
21
25
25
32
59
67
72
63
61
53
51
50
44
43
37
40
39
40
56
72
68

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

5
5
5
4
4
5
6
6
7
7
7
7
7
6
5
5
5
5
5
5
5
5
5
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
78
76
77
79
76
71
71
72
75
77
71
72
76
78
83
83
86
86
86
86
88
88
88

Pressure (mb)

1007
1007
1008
1009
1010
1011
1012
1012
1012
1012
1012
1013
1013
1014
1015
1015
1016
1016
1017
1017
1018
1018
1018
1019

Ozone (du)

336
339
345
349
348
350
350
355
359
365
370
375
379
379
378
380
380
380
380
379
376
372
370
365

Saturday 20

Waxing Crescent 1%

08:50

16:48

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
03 Bad

Sun - Rise: 07:47, Set: 16:30, Transit: 12:09. Moon - Rise: 08:50, Set: 16:48. Civil Dark: 17:04 - 07:13. Nautical Dark: 17:42 - 06:36. Astro Dark: 18:18 - 06:00

Total Clouds (% Sky Obscured)

97
84
95
99
92
93
97
88
100
82
94
95
90
76
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

95
84
93
93
86
88
86
88
87
36
61
66
57
34
73
78
20
18
26
63
83
88
88
84

Medium Clouds (% Sky Obscured)

40
37
33
49
37
37
41
34
48
45
51
41
40
31
33
48
85
35
100
100
100
99
99
98

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
1
0
80
81
76
76
100
90
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

5
7
4
6
6
5
4
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

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

Precipitation Probability (%)

65
69
70
67
63
63
62
46
31
27
33
35
22
17
13
8
7
2
9
12
14
17
20
22

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

5
5
5
5
6
6
6
7
8
8
7
7
7
6
6
6
6
6
5
5
5
5
5
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
88
90
88
88
88
87
84
81
73
77
82
87
88
88
88
90
88
85
83
80
79
79

Pressure (mb)

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

Ozone (du)

364
364
365
364
361
360
359
354
350
352
354
351
346
345
345
346
348
351
351
349
346
343
341
341

Sunday 21

Waxing Crescent 3%

09:31

17:53

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
03 Bad

Sun - Rise: 07:48, Set: 16:31, Transit: 12:09. Moon - Rise: 09:31, Set: 17:53. Civil Dark: 17:05 - 07:14. Nautical Dark: 17:42 - 06:36. Astro Dark: 18:18 - 06:00

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)

75
80
76
75
75
74
74
73
72
73
74
78
83
93
41
99
97
96
96
96
95
95
95
95

Medium Clouds (% Sky Obscured)

98
98
98
69
99
61
33
85
91
83
95
97
91
25
100
25
30
38
100
100
100
100
100
100

High Clouds (% Sky Obscured)

100
100
100
82
93
87
68
73
93
98
81
75
75
70
70
75
75
80
75
90
80
80
75
75

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
6
7
6
9
9
9
8
9
9
9
9
9
7
9
4
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
Light Rain
Light Rain
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

27
18
23
12
11
6
17
45
77
95
60
44
62
70
68
65
68
72
82
85
95
95
95
73

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.5
0.9
0
0
0
0.3
0.3
0.3
0.4
0.3
0.4
0.4
0.6
0.6
0.7
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
2
2
2
3
3
4
5
6
8
8
7
7
7
6
5
5
4
4
4
4
4
5
5

Relative Humidity (%)

79
82
85
86
89
88
86
87
88
93
95
93
91
93
94
93
91
90
85
83
88
90
93
93

Pressure (mb)

1010
1010
1010
1009
1009
1009
1009
1008
1008
1007
1007
1007
1007
1008
1008
1009
1009
1009
1009
1009
1009
1009
1009
1009

Ozone (du)

338
337
336
336
336
336
337
340
338
338
340
342
348
349
355
357
357
355
354
354
347
345
342
341

Monday 22

Waxing Crescent 8%

10:04

19:02

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
03 Bad

Sun - Rise: 07:48, Set: 16:31, Transit: 12:10. Moon - Rise: 10:04, Set: 19:02. Civil Dark: 17:05 - 07:14. Nautical Dark: 17:43 - 06:37. Astro Dark: 18:19 - 06:00

Total Clouds (% Sky Obscured)

100
96
93
100
91
96
100
100
100
96
92
88
79
71
63
73
85
96
96
97
98
99
99
99

Low Clouds (% Sky Obscured)

94
81
77
92
72
81
86
86
83
82
79
75
66
62
60
61
64
68
79
83
89
85
82
77

Medium Clouds (% Sky Obscured)

57
86
52
73
33
27
24
88
86
36
21
39
31
24
16
44
69
95
94
94
94
83
72
60

High Clouds (% Sky Obscured)

75
75
75
80
80
80
80
83
87
81
51
35
25
13
0
0
0
0
6
21
59
82
89
99

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

70
66
53
48
37
44
53
56
76
69
61
67
64
63
60
73
84
89
94
89
72
78
72
46

Precipitation Amount (mm)

0.2
0.3
0
0
0
0
0.2
0.2
0.5
0.2
0
0.2
0
0
0
0.3
0.5
0.6
0.6
0.4
0
0.3
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

6
6
6
6
6
6
6
7
8
8
8
8
8
8
7
7
7
7
7
7
7
7
6
6

Feels Like (°C)

4
4
4
3
3
3
3
4
5
6
5
5
5
5
4
4
4
4
4
3
4
4
4
4

Dew Point (°C)

5
5
5
5
4
4
4
5
6
7
6
6
6
6
5
5
5
5
6
5
5
5
4
4

Relative Humidity (%)

93
90
94
91
88
85
85
87
88
91
87
87
88
87
85
84
85
88
90
90
88
87
87
87

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1008
1007
1007
1006
1006
1006
1006
1006
1006
1006
1006
1007
1007
1007
1008
1008
1008

Ozone (du)

338
339
340
342
345
344
343
341
342
342
344
345
343
342
342
342
341
341
341
340
340
340
338
337

Tuesday 23

Waxing Crescent 14%

10:30

20:13

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
03 Bad

Sun - Rise: 07:49, Set: 16:32, Transit: 12:10. Moon - Rise: 10:30, Set: 20:13. Civil Dark: 17:06 - 07:15. Nautical Dark: 17:43 - 06:37. Astro Dark: 18:19 - 06:01

Total Clouds (% Sky Obscured)

98
98
98
96
95
94
93
95
97
95
94
93
93
93
93
91
90
89
88
88
89
89
92
95

Low Clouds (% Sky Obscured)

76
75
75
74
71
70
61
59
59
61
56
55
57
54
49
49
51
52
51
52
53
56
62
72

Medium Clouds (% Sky Obscured)

51
44
38
32
26
20
49
73
92
89
88
86
87
85
84
77
86
87
88
88
89
89
92
95

High Clouds (% Sky Obscured)

95
95
85
75
70
60
45
45
25
20
20
30
50
70
70
75
75
70
70
70
70
40
25
25

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 (%)

49
50
49
40
40
33
35
38
40
30
26
25
18
12
0
2
2
0
6
8
4
24
30
32

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
4
3
3
3
3
4
3
3
3
3
3
4
4
3
3
4
4
4
4
4
4
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
3
3
3
3
3
4
4
4
4
4
4
4
4
3
2
2
2
1
0
0
-1
-1
-1

Dew Point (°C)

4
4
4
4
4
4
4
4
3
3
3
3
3
3
3
2
2
1
0
0
0
-1
-1
-1

Relative Humidity (%)

88
88
90
90
90
88
86
83
78
75
76
79
79
82
85
86
86
86
85
85
86
84
84
86

Pressure (mb)

1009
1009
1009
1009
1010
1010
1010
1010
1009
1009
1008
1008
1007
1007
1007
1007
1006
1006
1006
1005
1005
1005
1005
1005

Ozone (du)

335
335
334
333
332
331
330
330
330
330
331
332
332
333
334
335
336
337
338
338
338
338
340
341

Wednesday 24

Waxing Crescent 22%

10:52

21:25

Sun - Rise: 07:49, Set: 16:32, Transit: 12:11. Moon - Rise: 10:52, Set: 21:25. Civil Dark: 17:06 - 07:15. Nautical Dark: 17:44 - 06:37. Astro Dark: 18:20 - 06:01

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 West Portland, Multnomah, United States of America (45.46,-122.72)

Generated: 18/12/25 04:25:45. Forecast: 18/12/25 to 24/12/25. Timezone: UTC-8.00