Astronomy Seeing

Forecasts Calculator
Night
Astronomical Dawn/Dusk
Nautical Dawn/Dusk
Civil Dawn/Dusk
Daytime
Clouds Index Bad Layers Ground
Time Low Mid High Arc Sec. 1 2 Jet Stream Bot (km) Top (km) K/100m Temp Rel. Hum. Celestial Bodies
Mon 2026-07-13 Poor 
sunrise: 04:45   sunset: 22:12   moonrise: 02:21   moonset: 22:17   moonphase: 1%
Period Time
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Astronomical Twilight (Morning) -
Period Duration
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Total Imaging Time -
00 0 0 57 1.53 5 5 10m/s 00.0 00.0 0.0 K 19C 96% --------P
01 0 0 36 1.52 5 5 10m/s 00.0 00.0 0.0 K 19C 97% -----S-NP
☽↑ 02 0 0 13 1.55 5 5 9m/s 00.1 00.6 0.6 K 20C 93% -----S-NP
03 0 0 0 1.58 5 5 8m/s 00.1 00.6 0.8 K 20C 93% L--M-SUNP
☀↑ 04 0 0 13 1.63 5 5 8m/s 00.1 00.6 0.9 K 20C 94% L--M-SUNP
05 0 0 39 1.68 5 5 8m/s 00.1 00.6 0.9 K 20C 93% L--M-SUNP
06 51 8 53 1.71 5 5 7m/s 00.1 00.6 1.0 K 20C 92% LM-M-SUN-
07 55 32 41 1.73 5 5 7m/s 00.1 00.6 1.0 K 21C 88% LM-MJSUN-
08 54 42 17 1.74 5 5 6m/s 00.1 00.6 1.0 K 22C 84% LM-MJSUN-
09 55 72 0 1.74 5 5 6m/s 00.1 00.6 1.0 K 23C 79% LM-MJSUN-
10 47 25 0 1.71 5 5 6m/s 00.1 00.6 1.0 K 24C 75% LMVMJSUN-
11 42 0 0 1.66 5 5 6m/s 00.1 00.6 1.0 K 24C 71% LMVMJSUN-
12 39 0 0 1.62 5 5 6m/s 00.1 00.6 1.1 K 25C 68% LMVMJSU--
13 35 0 0 1.59 5 5 5m/s 00.1 00.6 1.1 K 25C 66% LMVMJ-U--
14 28 0 0 1.63 5 5 5m/s 00.1 00.6 1.0 K 25C 65% LMVMJ-U--
15 17 0 0 1.60 5 5 4m/s 00.1 00.6 0.8 K 25C 65% LMVMJ-U--
16 1 0 0 1.57 5 5 3m/s 00.1 00.6 0.7 K 24C 65% LMVMJ-U--
17 17 0 0 1.59 5 5 3m/s 00.1 00.6 0.6 K 24C 66% LMVMJ-U--
18 21 0 0 1.67 5 5 3m/s 00.1 00.6 0.6 K 23C 67% LMVMJ-U--
19 24 0 5 1.77 5 5 4m/s 00.1 00.6 0.6 K 22C 70% LMV-J----
20 4 0 12 1.77 5 5 4m/s 00.1 00.6 0.5 K 21C 74% LMV-J----
21 0 0 22 1.72 5 5 4m/s 00.1 00.6 0.6 K 20C 78% L-V-J----
☀↓ 22 11 1 35 1.71 5 5 4m/s 05.0 05.8 0.5 K 19C 83% --V-J----
23 29 0 50 1.69 5 5 4m/s 04.4 05.0 0.5 K 18C 86% --V------
Tue 2026-07-14 Poor 
sunrise: 04:46   sunset: 22:11   moonrise: 03:54   moonset: 22:42   moonphase: 0%
Period Time
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Astronomical Twilight (Morning) -
Period Duration
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Total Imaging Time -
00 47 0 55 1.70 5 4 3m/s 04.4 05.0 0.5 K 18C 89% --------P
01 55 0 44 1.72 5 4 2m/s 05.0 05.8 0.5 K 18C 91% -----S-NP
02 58 0 24 1.76 5 5 2m/s 05.0 05.8 0.5 K 17C 94% -----S-NP
☽↑ 03 51 0 8 1.82 5 5 2m/s 03.1 03.7 0.5 K 17C 95% ---M-SUNP
☀↑ 04 42 1 2 1.87 5 5 3m/s 03.1 04.3 0.5 K 17C 96% ---M-SUNP
05 49 0 1 1.90 5 5 3m/s 03.1 03.7 0.6 K 17C 94% L--M-SUNP
06 56 0 0 1.96 5 5 4m/s 02.6 03.7 0.6 K 18C 92% LM-M-SUN-
07 62 1 0 2.01 5 4 5m/s 02.6 04.4 0.6 K 19C 86% LM-MJSUN-
08 69 4 0 2.05 5 4 6m/s 03.1 04.3 0.6 K 20C 80% LM-MJSUN-
09 70 8 0 2.07 5 4 8m/s 03.1 04.4 0.6 K 21C 76% LM-MJSUN-
10 64 15 0 2.12 5 4 9m/s 03.1 04.4 0.7 K 22C 73% LMVMJSUN-
11 54 24 0 2.14 5 4 10m/s 03.1 04.4 0.7 K 22C 73% LMVMJSUN-
12 43 28 0 2.15 5 4 12m/s 03.1 04.4 0.7 K 23C 71% LMVMJSU--
13 33 22 0 2.09 5 4 14m/s 03.1 04.4 0.7 K 23C 70% LMVMJ-U--
14 22 12 0 1.92 5 4 16m/s 03.1 04.4 0.7 K 23C 68% LMVMJ-U--
15 13 3 0 1.70 5 4 17m/s 03.1 04.4 0.7 K 24C 65% LMVMJ-U--
16 7 0 0 1.56 5 4 19m/s 03.1 04.4 0.6 K 24C 64% LMVMJ-U--
17 2 0 0 1.49 5 4 20m/s 03.1 04.4 0.6 K 23C 64% LMVMJ-U--
18 0 0 0 1.53 5 4 21m/s 03.1 04.4 0.6 K 23C 65% LMVMJ-U--
19 0 0 0 1.61 5 4 22m/s 03.1 04.4 0.6 K 22C 67% LMV-J----
20 0 0 0 1.63 5 5 22m/s 03.1 04.4 0.6 K 21C 71% LMV-J----
21 4 0 0 1.70 5 5 23m/s 03.1 04.4 0.5 K 20C 76% L-V-J----
☀↓ 22 24 15 0 1.87 5 5 23m/s 02.6 03.7 0.6 K 19C 82% L-V-J----
23 51 35 0 1.99 5 4 22m/s 02.6 03.7 0.6 K 19C 88% --V------
Wed 2026-07-15 Poor 
sunrise: 04:48   sunset: 22:10   moonrise: 05:38   moonset: 22:55   moonphase: 2%
Period Time
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Astronomical Twilight (Morning) -
Period Duration
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Total Imaging Time -
00 66 45 0 2.10 5 5 22m/s 02.6 03.1 0.8 K 18C 91% --------P
01 56 37 0 2.21 5 5 22m/s 02.6 03.1 0.8 K 18C 93% -----S-NP
02 35 18 0 2.30 5 4 22m/s 05.8 06.6 0.5 K 18C 90% -----S-NP
03 17 4 0 2.25 4 3 22m/s 05.8 06.6 0.5 K 17C 90% ---M-SUNP
☀↑ 04 10 0 0 2.34 5 4 21m/s 03.7 05.0 0.5 K 17C 90% ---M-SUNP
☽↑ 05 6 0 0 2.21 5 3 21m/s 05.0 05.8 0.5 K 17C 89% ---M-SUNP
06 4 0 0 2.03 4 3 21m/s 05.0 05.8 0.6 K 17C 88% -M-M-SUN-
07 1 0 0 1.95 4 3 20m/s 03.1 05.8 0.6 K 18C 82% LM-MJSUN-
08 0 0 0 1.96 4 3 20m/s 04.4 05.8 0.6 K 20C 76% LM-MJSUN-
09 0 0 0 1.98 4 2 21m/s 04.4 05.8 0.7 K 21C 72% LM-MJSUN-
10 8 0 0 1.80 4 2 22m/s 03.7 05.8 0.6 K 21C 70% LMVMJSUN-
11 20 0 0 1.59 4 2 24m/s 05.1 05.8 0.8 K 22C 68% LMVMJSUN-
12 27 0 0 1.57 4 2 24m/s 03.7 05.8 0.6 K 23C 66% LMVMJSU--
13 21 0 0 1.58 4 2 25m/s 03.7 05.8 0.6 K 23C 64% LMVMJ-U--
14 9 0 0 1.71 4 3 25m/s 03.7 05.8 0.7 K 24C 62% LMVMJ-U--
15 0 0 0 1.71 4 3 25m/s 03.7 05.8 0.7 K 24C 61% LMVMJ-U--
16 0 0 4 1.60 5 3 25m/s 03.7 05.8 0.6 K 22C 64% LMVMJ-U--
17 0 0 11 1.52 4 3 26m/s 03.2 05.8 0.6 K 22C 64% LMVMJ-U--
18 0 0 24 1.80 4 3 25m/s 03.1 05.8 0.6 K 22C 67% LMVMJ----
19 0 0 48 1.97 4 2 24m/s 02.4 05.6 0.6 K 21C 70% LMV-J----
20 0 0 78 2.02 4 2 26m/s 02.6 05.8 0.6 K 21C 74% LMV-J----
21 0 0 100 1.86 4 2 22m/s 03.0 05.6 0.6 K 20C 77% L-V-J----
☀↓ 22 0 0 100 1.94 4 2 14m/s 02.5 05.7 0.6 K 19C 79% L-V-J----
23 0 0 100 2.18 4 2 10m/s 02.6 05.8 0.6 K 19C 81% --V------
Thu 2026-07-16 Poor 
sunrise: 04:50   sunset: 22:08   moonrise: 07:23   moonset: 23:03   moonphase: 6%
Period Time
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Astronomical Twilight (Morning) -
Period Duration
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Total Imaging Time -
00 0 0 100 2.10 5 3 13m/s 03.8 05.2 0.7 K 18C 83% --------P
01 0 0 100 1.72 4 2 8m/s 05.7 06.5 0.5 K 18C 85% -----S-NP
02 0 0 100 1.99 4 3 10m/s 03.3 05.2 0.6 K 17C 87% -----SUNP
03 0 0 98 1.77 4 3 4m/s 03.6 05.0 0.7 K 17C 88% ---M-SUNP
☀↑ 04 4 3 70 1.95 5 3 12m/s 03.9 05.2 0.7 K 17C 89% ---M-SUNP
05 11 7 31 1.88 4 3 11m/s 03.3 05.3 0.6 K 17C 89% ---M-SUN-
06 18 10 10 1.80 4 2 6m/s 04.2 05.6 0.7 K 18C 88% -M-M-SUN-
☽↑ 07 26 7 26 1.81 4 3 6m/s 04.2 04.9 0.8 K 18C 86% -M-MJSUN-
08 35 3 58 2.01 4 3 6m/s 04.4 05.0 0.7 K 19C 84% LM-MJSUN-
09 37 0 75 1.64 4 3 4m/s 04.3 05.7 0.6 K 20C 80% LM-MJSUN-
10 28 0 57 1.62 4 3 8m/s 04.3 05.0 0.6 K 20C 77% LMVMJSUN-
11 13 0 24 2.16 4 2 9m/s 05.8 06.6 0.5 K 21C 72% LMVMJSUN-
12 1 0 0 1.86 4 3 8m/s 05.7 06.5 0.5 K 22C 67% LMVMJSU--
13 0 0 0 1.87 4 3 5m/s 05.8 06.6 0.5 K 22C 61% LMVMJ-U--
14 0 0 0 1.95 5 4 7m/s 05.7 06.5 0.5 K 23C 58% LMVMJ-U--
15 1 0 0 2.21 5 4 9m/s 05.1 06.6 0.5 K 23C 57% LMVMJ-U--
16 9 0 0 2.20 4 3 5m/s 05.1 05.9 0.5 K 23C 56% LMVMJ-U--
17 21 0 0 1.84 5 4 7m/s 03.7 04.3 0.5 K 24C 56% LMVMJ-U--
18 29 0 0 2.14 5 4 4m/s 03.7 04.4 0.5 K 23C 57% LMVMJ----
19 29 0 0 1.76 5 5 4m/s 03.7 04.3 0.5 K 23C 60% LMV-J----
20 26 0 0 2.11 5 4 1m/s 03.9 04.6 0.6 K 22C 65% LMV-J----
21 26 0 0 2.21 5 4 6m/s 03.7 04.4 0.6 K 21C 70% L-V-J----
☀↓ 22 30 0 0 1.61 5 4 5m/s 03.7 04.3 0.6 K 20C 74% L-V------
☾↓ 23 36 0 0 1.69 5 3 5m/s 03.6 04.3 0.6 K 19C 80% --V------
Fri 2026-07-17 Poor 
sunrise: 04:51   sunset: 22:07   moonrise: 09:02   moonset: 23:09   moonphase: 13%
Period Time
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Astronomical Twilight (Morning) -
Period Duration
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Total Imaging Time -
00 40 0 0 1.72 4 3 7m/s 03.6 04.3 0.5 K 19C 84% --------P
01 38 0 0 2.16 5 3 10m/s 05.1 05.8 0.5 K 18C 85% -----S-NP
02 34 0 0 1.84 5 4 11m/s 04.9 05.6 0.5 K 17C 84% -----SUNP
03 32 0 0 1.77 5 3 13m/s 05.0 05.8 0.6 K 17C 84% ---M-SUNP
☀↑ 04 37 0 0 1.82 4 2 12m/s 04.3 05.7 0.5 K 16C 85% ---M-SUNP
05 44 0 0 1.81 4 2 15m/s 04.3 05.7 0.5 K 16C 83% ---M-SUN-
06 45 0 0 2.23 4 2 17m/s 04.4 05.8 0.6 K 16C 81% -M-M-SUN-
07 32 0 0 1.79 4 2 16m/s 04.3 05.7 0.5 K 17C 79% -M-MJSUN-
08 12 0 0 2.20 4 2 17m/s 04.4 05.8 0.6 K 19C 78% -M-MJSUN-
☽↑ 09 0 0 0 2.15 4 2 16m/s 04.4 05.8 0.5 K 20C 74% -M-MJSUN-
10 5 0 0 2.12 4 3 17m/s 04.4 05.8 0.5 K 21C 69% LMVMJSUN-
11 18 0 0 1.74 5 3 17m/s 04.9 05.7 0.5 K 23C 63% LMVMJSUN-
12 28 0 0 1.99 5 3 16m/s 04.4 05.8 0.5 K 24C 60% LMVMJSU--
13 30 7 0 1.93 5 3 16m/s 04.3 05.8 0.5 K 24C 58% LMVMJ-U--
14 28 17 0 1.57 5 4 16m/s 04.3 05.7 0.5 K 25C 57% LMVMJ-U--
15 27 24 0 1.50 5 4 20m/s 04.2 05.7 0.5 K 25C 56% LMVMJ-U--
16 9 28 0 1.72 5 4 21m/s 04.3 05.8 0.6 K 26C 57% LMVMJ-U--
17 3 21 0 1.43 5 4 21m/s 04.3 05.7 0.6 K 25C 56% LMVMJ-U--
18 0 16 0 1.42 5 4 20m/s 04.3 05.7 0.6 K 25C 57% LMVMJ----
19 0 14 0 1.45 5 4 17m/s 04.3 05.7 0.6 K 24C 61% LMV-J----
20 2 13 0 1.61 5 4 15m/s 04.3 05.8 0.6 K 23C 67% LMV-J----
21 3 11 0 1.59 5 4 15m/s 05.1 05.8 0.6 K 22C 73% L-V-J----
☀↓ 22 2 7 0 1.41 5 4 16m/s 05.0 05.7 0.7 K 21C 76% L-V------
☾↓ 23 0 3 0 1.37 5 3 12m/s 07.4 08.4 0.5 K 20C 79% ---------
Sat 2026-07-18 Poor 
sunrise: 04:53   sunset: 22:05   moonrise: 10:33   moonset: 23:14   moonphase: 21%
Period Time
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Astronomical Twilight (Morning) - 01:50
Period Duration
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Total Imaging Time -
00 0 0 0 1.57 5 3 13m/s 07.5 08.4 0.5 K 20C 82% --------P
01 4 0 0 1.63 5 4 13m/s 04.3 05.7 0.6 K 19C 84% -----S-NP
02 10 0 0 1.39 5 4 12m/s 04.3 05.7 0.6 K 19C 85% -----SUNP
03 14 0 0 1.40 4 3 11m/s 04.3 05.7 0.6 K 19C 86% ---M-SUNP
☀↑ 04 12 0 0 1.66 5 4 11m/s 04.3 05.8 0.6 K 18C 88% ---M-SUNP
05 9 0 0 1.42 5 3 12m/s 04.3 05.7 0.6 K 18C 88% ---M-SUN-
06 9 0 0 1.46 5 4 12m/s 04.2 05.6 0.6 K 18C 85% -M-M-SUN-
07 15 0 3 1.42 5 3 11m/s 04.3 05.7 0.6 K 19C 84% -M-MJSUN-
08 25 0 9 1.42 5 4 12m/s 04.3 05.7 0.6 K 20C 81% -M-MJSUN-
09 31 0 16 1.42 5 4 13m/s 04.3 05.7 0.6 K 21C 76% -M-MJSUN-
☽↑ 10 31 0 27 1.61 5 4 12m/s 04.3 05.7 0.6 K 22C 70% -MVMJSUN-
11 28 0 40 1.40 5 4 10m/s 04.3 05.7 0.6 K 23C 64% LMVMJSUN-
12 24 0 51 1.61 5 5 11m/s 05.0 05.7 0.6 K 24C 59% LMVMJSU--
13 20 5 58 1.62 5 4 12m/s 04.4 05.8 0.6 K 25C 56% LMVMJ-U--
14 14 11 63 1.38 5 4 11m/s 04.3 05.7 0.5 K 25C 53% LMVMJ-U--
15 11 17 66 1.76 5 5 9m/s 04.3 05.0 0.5 K 26C 54% LMVMJ-U--
16 10 19 68 1.43 5 5 12m/s 00.0 00.0 0.0 K 26C 54% LMVMJ-U--
17 11 20 68 1.42 5 5 14m/s 00.0 00.0 0.0 K 25C 55% LMVMJ-U--
18 13 20 62 1.39 5 5 11m/s 00.0 00.0 0.0 K 25C 57% LMVMJ----
19 17 21 44 1.39 5 5 14m/s 00.0 00.0 0.0 K 24C 62% LMV-J----
20 22 22 19 1.38 5 5 13m/s 00.1 00.5 0.6 K 23C 70% LMV-J----
21 24 23 1 1.42 5 5 16m/s 00.0 00.5 1.1 K 22C 76% L-V-J----
☀↓ 22 20 25 0 1.45 5 5 15m/s 00.1 00.5 1.1 K 21C 76% L-V------
☾↓ 23 12 26 0 1.49 5 4 14m/s 00.0 00.5 1.8 K 20C 74% ---------
Sun 2026-07-19 Poor 
sunrise: 04:55   sunset: 22:04   moonrise: 12:00   moonset: 23:18   moonphase: 31%
Period Time
Astronomical Twilight (Evening) 01:08 -
Deep Sky Darkness -
Astronomical Twilight (Morning) - 02:02
Period Duration
Astronomical Twilight (Evening) -
Deep Sky Darkness -
Total Imaging Time 0 hours 54 minutes
00 35 76 100 1.20 5 4 28m/s 02.4 03.0 0.5 K 19C 68% --------P
01 3 19 0 1.35 5 5 14m/s 00.1 00.5 0.8 K 20C 74% -----S-NP
02 1 10 0 1.35 5 5 14m/s 00.1 00.5 1.1 K 19C 76% -----SUNP
03 5 4 0 1.33 5 5 16m/s 00.1 00.5 1.3 K 19C 78% ---M-SUNP
☀↑ 04 21 1 0 1.32 5 5 15m/s 00.1 00.5 1.4 K 19C 78% ---M-SUNP
05 43 0 0 1.29 5 5 15m/s 00.1 00.5 1.5 K 19C 79% ---M-SUN-
06 58 0 0 1.25 5 5 15m/s 00.1 00.5 1.5 K 20C 80% -M-M-SUN-
07 58 2 0 1.24 5 4 14m/s 04.9 05.6 0.5 K 20C 79% -M-MJSUN-
08 50 7 0 1.22 5 4 16m/s 05.0 05.7 0.5 K 20C 75% -M-MJSUN-
09 43 13 1 1.26 5 4 17m/s 04.9 05.6 0.6 K 21C 72% -M-MJSUN-
10 40 22 0 1.29 5 4 19m/s 04.9 05.6 0.6 K 21C 71% -MVMJSUN-
11 38 32 0 1.34 5 4 19m/s 04.9 05.6 0.6 K 22C 69% -MVMJSUN-
☽↑ 12 37 39 6 1.39 5 4 20m/s 04.9 05.6 0.6 K 22C 67% -MVMJSU--
13 35 39 27 1.46 4 3 20m/s 04.2 05.6 0.6 K 23C 64% LMVMJ-U--
14 33 35 55 1.62 5 3 20m/s 04.2 05.7 0.6 K 23C 61% LMVMJ-U--
15 30 34 69 1.85 5 4 19m/s 04.2 05.6 0.6 K 23C 58% LMVMJ-U--
16 27 39 53 1.69 5 4 20m/s 04.2 05.6 0.5 K 24C 57% LMVMJ-U--
17 24 47 23 1.73 5 4 21m/s 04.9 05.6 0.5 K 24C 57% LMVMJ-U--
18 21 55 8 1.63 5 4 22m/s 05.7 06.4 0.5 K 23C 58% LMVMJ----
19 16 62 27 1.28 5 4 21m/s 05.6 06.4 0.5 K 23C 60% LMV-J----
20 12 70 60 1.04 5 5 22m/s 00.0 00.5 0.7 K 22C 64% LMV-J----
21 11 75 87 0.98 5 4 24m/s 06.4 07.3 0.6 K 21C 66% L-V-J----
☀↓ 22 17 77 96 1.11 5 4 26m/s 06.4 07.2 0.6 K 20C 66% L-V------
☾↓ 23 26 77 99 1.16 5 4 26m/s 06.4 07.3 0.6 K 20C 67% ---------
Night
Astronomical Dawn/Dusk
Nautical Dawn/Dusk
Civil Dawn/Dusk
Daytime