Limited 3 Days Seeing Prediction

  • You can subscribe to an ad-free extended seven day seeing prediction with point+: BUY
Datetime Clouds Seeing Bad Layers
Sun & Moon phases Hour EDT Low Mid High Index 1 Index 2 arc sec. Visible Planets Jet stream (m/s) Bot (km) Top (km) K/ 100m Temp (°C) 2m rel. hum. (%)
Sat
2015 .04.18
20 99 99 99 4 2 0.95
-MVMJ----
38 m/s 05.7 06.5 0.7 K 16 °C 45%
21 54 54 99 4 2 0.95
--VMJ----
37 m/s 05.7 06.5 0.7 K 13 °C 50%
22 20 20 99 4 2 0.95
--V-J----
36 m/s 05.7 06.5 0.7 K 10 °C 54%
23 0 0 99 4 2 0.95
--V-J----
35 m/s 05.7 06.5 0.7 K 9 °C 57%
Sun
2015 .04.19
06:51
20:16
Full moon (°)
07:28
21:34
new (10°)
00 0 0 99 4 2 0.95
----JS---
35 m/s 05.7 06.5 0.7 K 8 °C 59%
01 0 0 99 4 2 0.95
----JS---
36 m/s 05.7 06.5 0.7 K 8 °C 59%
02 0 0 99 4 2 0.98
----JS---
37 m/s 05.7 06.5 0.6 K 8 °C 60%
03 1 2 99 4 2 1.03
----JS--P
39 m/s 05.7 06.5 0.6 K 8 °C 59%
04 1 2 98 4 2 1.11
-----S--P
41 m/s 05.0 06.5 0.5 K 8 °C 57%
05 0 0 98 3 1 1.19
-----S--P
43 m/s 09.4 10.6 0.5 K 8 °C 57%
06 0 0 98 3 1 1.25
-----S-NP
44 m/s 09.4 10.6 0.5 K 7 °C 56%
07 0 0 98 4 2 1.29
-----SUNP
44 m/s 05.0 05.7 0.5 K 8 °C 57%
08 0 0 98 4 2 1.32
LM-M-SUNP
43 m/s 02.5 03.7 0.5 K 9 °C 58%
09 3 16 98 3 1 1.32
LMVM--UNP
41 m/s 05.7 06.5 0.5 K 10 °C 58%
10 7 35 98 3 1 1.32
LMVM--UNP
40 m/s 08.3 09.4 0.5 K 12 °C 58%
11 10 49 98 4 2 1.30
LMVM--UNP
40 m/s 05.7 06.5 0.6 K 14 °C 59%
12 10 50 99 3 1 1.29
LMVM--UN-
43 m/s 05.7 06.5 0.6 K 15 °C 59%
13 10 43 99 4 2 1.30
LMVM--UN-
47 m/s 04.9 05.7 0.6 K 15 °C 59%
14 11 36 99 4 2 1.31
LMVMJ-UN-
49 m/s 04.9 05.7 0.7 K 15 °C 60%
15 12 35 99 4 2 1.30
LMVMJ-UN-
50 m/s 04.9 05.7 0.7 K 15 °C 60%
16 14 40 99 4 3 1.34
LMVMJ-U--
48 m/s 03.6 05.6 0.6 K 15 °C 62%
17 16 47 100 4 2 1.44
LMVMJ-U--
47 m/s 03.6 05.6 0.6 K 14 °C 67%
18 17 55 100 4 3 1.51
LMVMJ-U--
46 m/s 03.6 05.6 0.6 K 13 °C 74%
19 20 63 100 4 2 1.56
LMVMJ----
45 m/s 03.6 05.6 0.6 K 12 °C 81%
20 30 71 100 4 2 1.60
LMVMJ----
42 m/s 01.9 04.9 0.6 K 11 °C 88%
21 49 81 98 3 1 1.60
--VMJ----
38 m/s 00.4 04.9 0.6 K 10 °C 90%
22 71 89 97 4 2 1.56
--V-J----
33 m/s 04.2 04.9 0.6 K 10 °C 90%
23 89 93 97 4 2 1.50
--V-J----
28 m/s 04.2 04.8 0.6 K 10 °C 90%
Mon
2015 .04.20
06:49
20:17
Full moon (°)
08:12
22:41
waxing crescent (23°)
00 96 90 98 4 2 1.43
----JS---
25 m/s 04.2 04.8 0.5 K 10 °C 90%
01 96 81 96 5 4 1.36
----JS---
24 m/s 01.8 02.9 0.8 K 10 °C 90%
02 93 64 88 5 4 1.28
----JS---
23 m/s 01.8 02.9 0.8 K 11 °C 90%
03 90 41 70 5 4 1.18
----JS--P
22 m/s 01.8 02.9 0.7 K 11 °C 88%
04 89 17 47 4 3 1.19
-----S--P
21 m/s 09.2 10.4 0.5 K 10 °C 86%
05 89 0 26 4 3 1.26
-----S--P
20 m/s 09.2 10.4 0.5 K 10 °C 85%
06 88 0 11 5 4 1.36
-----S-NP
19 m/s 00.8 01.8 1.0 K 10 °C 86%
07 86 0 6 5 4 1.50
-----SUNP
18 m/s 00.4 01.8 0.8 K 10 °C 87%
08 78 0 13 5 4 1.57
LM-M-SUNP
18 m/s 00.4 01.8 0.7 K 10 °C 87%
09 63 2 31 5 5 1.53
LMVM--UNP
19 m/s 00.8 01.8 0.6 K 11 °C 83%
10 47 3 53 5 5 1.39
LMVM--UNP
20 m/s 00.9 01.8 0.6 K 13 °C 77%
11 36 4 67 5 4 1.14
LMVM--UNP
21 m/s 04.1 04.8 0.5 K 14 °C 72%
12 36 5 67 5 4 1.04
LMVM--UN-
22 m/s 04.1 04.8 0.5 K 15 °C 71%
13 42 8 60 5 4 1.05
LMVM--UN-
23 m/s 09.1 10.3 0.5 K 16 °C 71%
14 47 12 54 5 4 1.09
LMVMJ-UN-
23 m/s 09.1 10.3 0.6 K 17 °C 72%
15 46 17 58 5 4 1.13
LMVMJ-UN-
22 m/s 09.1 10.3 0.7 K 17 °C 72%
16 42 23 67 5 4 1.20
LMVMJ-U--
21 m/s 09.1 10.3 0.8 K 17 °C 72%
17 38 30 76 5 4 1.23
LMVMJ-U--
20 m/s 09.1 10.3 0.8 K 17 °C 74%
18 39 35 80 5 3 1.22
LMVMJ-U--
20 m/s 09.1 10.3 0.8 K 16 °C 77%
19 43 42 80 4 2 1.16
LMVMJ----
19 m/s 09.1 10.3 0.9 K 14 °C 81%
20 53 53 81 4 2 1.27
LMVMJ----
19 m/s 09.1 10.3 0.9 K 13 °C 82%
21 66 67 86 3 1 1.63
L-VMJ----
20 m/s 08.0 10.3 0.8 K 11 °C 80%
22 79 82 91 2 1 2.03
--V-J----
20 m/s 08.0 10.2 1.0 K 10 °C 76%
23 84 94 96 2 1 2.38
--V-J----
20 m/s 08.0 10.2 1.1 K 8 °C 72%

Additional information to your astronomical seeing prediction:

  • Values may not reflect precisely reality
  • For good seeing conditions look for dark blue colors in the cloud cover and green values in the Seeing Indices and Jet Stream
  • The estimated seeing indexes (1 & 2) range from 1 (poor) to 5 (excellent) seeing conditions. This value is computed based on the integration of turbulent layers in the atmosphere.
  • Estimation of seeing in arcseconds. This is a test prediction under development, uncalibrated for the time being.
  • Cloud cover ranges from dark blue (0% cover) to white (100% cover). Fog or very low cloud is not shown here (see pictocast for fog)
  • High jetstream speeds (>35m/s) usually correspond to bad seeing, as well as very low speeds (<5m/s). Color gives a hint.
  • Bad Layers have a Temperature Gradient > 0.5K/100m. The actual gradient is shown K/100m. The top and bottom height of the Bad layers is indicated by Bad Layers bot/top
  • Visible planets and coordinates also considering temperature profiles of the atmosphere. The following planets are available: MVMJSUNP => Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
  • If you move your courser over the visible planets column, hourly coordinates for each planet will appear: Azimuth (Az) from north with altitude in degree (Alt) onto horizon, right ascension (RA) and declination (DEC). We may consider adding 10 minutes coordinates and additional objects on request.