Next three nights

ObserverOS ranks the upcoming astronomical nights using the median cloud consensus. Quality bands: Excellent ≤10%, Good >10–25%, Workable >25–40%, Poor >40%. Usable dark hours require cloud ≤30%; a Workable hour above 30% does not count as usable. All times: America/Chicago (Central Time).

Current best choice: Thursday, Oct 8
Poor night overall — possible brief clearing near dawn.
Confidence: Low — 0 hours with fewer than three families; 16 hours with spread above 15 points. Experimental agreement heuristic, not a calibrated probability.

#1 · Best choice

Thursday, Oct 8

5.7/10

Poor night overall — possible brief clearing near dawn.

Best window
Thu, Oct 8, 4:00 AM CDT – Thu, Oct 8, 6:00 AM CDT
Usable dark hours
2 of 5
Trend
Improving
61.15%1 AMAI 52.9 · RDPS 44GFS 100 · ICON 69.4 · NBM 34.1Large difference · low
57.65%2 AMAI 44.3 · RDPS 41GFS 100 · ICON 71 · NBM 30.6Large difference · low
42.4%3 AMAI 14.5 · RDPS 0GFS 100 · ICON 57.3 · NBM 27.5Large difference · low
28.65%4 AMAI 6.3 · RDPS 0GFS 100 · ICON 36.1 · NBM 21.2Large difference · low
22.95%5 AMAI 2.7 · RDPS 0GFS 100 · ICON 13.7 · NBM 32.2Large difference · low
#2

Thursday, Oct 8

1.4/10

Poor night overall — no usable dark hours forecast.

Best window
Fri, Oct 9, 5:00 AM CDT – Fri, Oct 9, 6:00 AM CDT
Usable dark hours
0 of 10
Trend
Improving
93.55%8 PMAI 90.6 · RDPS 89GFS 100 · ICON 96.5 · NBM 76.5Large difference · low
95.85%9 PMAI 94.1 · RDPS 94GFS 100 · ICON 97.6 · NBM 75.3Large difference · low
95.85%10 PMAI 94.1 · RDPS 94GFS 100 · ICON 97.6 · NBM 72.9Large difference · low
95.5%11 PMAI 94.9 · RDPS 95GFS 100 · ICON 96.1 · NBM 70.6Large difference · low
94.5%12 AMAI 94.5 · RDPS 94GFS 96.5 · ICON 94.5 · NBM 49Large difference · lowNBM outlier
91.55%1 AMAI 94.5 · RDPS 95GFS 100 · ICON 88.6 · NBM 51.8Large difference · lowNBM outlier
83.9%2 AMAI 94.5 · RDPS 95GFS 99.2 · ICON 73.3 · NBM 47.5Large difference · low
74.7%3 AMAI 93.7 · RDPS 94GFS 100 · ICON 55.7 · NBM 43.9Large difference · low
76.5%4 AMAI 96.9 · RDPS 97GFS 100 · ICON 56.1 · NBM 49Large difference · low
53.55%5 AMAI 96.9 · RDPS 97GFS 60.4 · ICON 38.8 · NBM 46.7Large difference · low
#3

Friday, Oct 9

0.0/10

Poor night overall — no usable dark hours forecast.

Best window
Fri, Oct 9, 10:00 PM CDT – Fri, Oct 9, 11:00 PM CDT
Usable dark hours
0 of 10
Trend
Stable
100%8 PMAI 100 · RDPS 100GFS 100 · ICON 100 · NBM —Close agreement · moderate
99.6%9 PMAI 99.2 · RDPS 100GFS 100 · ICON 99.6 · NBM —Close agreement · moderate
99.2%10 PMAI 98 · RDPS 98GFS 100 · ICON 99.2 · NBM —Close agreement · moderate
100%11 PMAI 98 · RDPS 98GFS 100 · ICON 100 · NBM —Close agreement · moderate
100%12 AMAI 100 · RDPS 100GFS 100 · ICON 100 · NBM —Close agreement · moderate
100%1 AMAI 99.6 · RDPS 98GFS 100 · ICON 100 · NBM —Close agreement · moderate
100%2 AMAI 99.6 · RDPS 100GFS 100 · ICON 100 · NBM —Close agreement · moderate
100%3 AMAI 99.6 · RDPS 100GFS 100 · ICON 100 · NBM —Close agreement · moderate
100%4 AMAI 98 · RDPS 98GFS 100 · ICON 100 · NBM —Close agreement · moderate
100%5 AMAI 76.9 · RDPS 61GFS 100 · ICON 100 · NBM —Large difference · low