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Tonight · Mon, 2 November 2026

Fairbanks

Tonight’s hourly cloud, moonlight and observing conditions.

64.838°N 147.716°W ·132 m ·Alaska, United States
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Tonight · peak score /100
65Good
22:00–07:00
best window
Limited by
Transparency
Why this matters

Transparency 0.27 — haze and water vapour will cost you the faintest targets. Read the guide →

Site details and actions
Site darkness · peer measure
Bright urban skyNot multiplied into the conditions score
18.3–19.0 mag/arcsec²

The score describes tonight’s conditions. Site darkness helps you choose what to observe.

See target outlook ↓Planet observing times →
Best months at Fairbanks, Alaska →Moonless nights →
Tonight in context · local sky & season

November historically: 4.9 qualifying nights/month on average (2005–2024). Regional cloud and darkness history, not tonight’s probability or a comparison with the conditions score.

A qualifying historical night has at least 3 hours of astronomical darkness and mean nighttime cloud ≤30%. This does not measure steady air or target visibility. Seasonal history →

Saturn: about 5.7h above 20° during this observing night’s darkness. Longest sampled dark-time opportunity among our four planet targets; not a weather ranking. Planet times →

Position calculations use roughly 20-minute samples. Clouds, skyglow and local obstructions still matter. Milky Way timing →

Best window
22:00 – 07:00
Window quality
63 / 100 avg
Astronomical dark
22:00 – 06:00
Moon
Waning crescent, 31%
Transparency at peak
0.27
Seeing at peak (est.)
0.86
Visual limit (modelled)
2.5–4.5 mag

The night, hour by hour

Colour = score · Luminance = everything else
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
61
62
62
63
63
64
65
64
60
27
0
Hour
Cloud %66654334542
Transp. 0–10.200.220.230.240.250.260.270.280.280.270.28
Seeing est. /10.870.850.850.850.870.860.860.850.840.830.81
Moon alt. °-10-7-239152026303335
DarknessDarkDarkDarkDarkDarkDarkDarkDarkTwil.Twil.Twil.
Inspect all cloud layers and score factors
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
61
62
62
63
63
64
65
64
60
27
Score
BEST WINDOW · 10 H
Low cloud
6%
6%
6%
5%
4%
3%
3%
4%
4%
3%
2%
Mid cloud
0%
0%
0%
0%
0%
0%
0%
1%
2%
1%
0%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.20
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.28
0.27
0.28
Seeing
0.87
0.85
0.85
0.85
0.87
0.86
0.86
0.85
0.84
0.83
0.81
Moon clear
down
down
down
33%
33%
32%
32%
31%
31%
31%
30%
22
23
00
01
02
03
04
05
06
07
08
Inspect

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Score inspectorWhy this hour scored what it did Open peakClose
04 Good · 65/100
Starting from
100
Cloud
−5
Transparency
−28
Seeing
−2
Moonlight
−0
Darkness
−0
Score
65
CLOUD 3% LOW 3% MID 0% HIGH 0% SUN -29.4° MOON 20.4° / 32% WIND 3 TEMP -8°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.

What can you actually do tonight?

This is GoodSeeing’s decision layer: the same forecast is weighted for your target and site darkness. Planetary work barely cares about moonlight; long exposures can fail on high cloud a visual observer would barely notice. Your choice is remembered on this device and becomes the default for new alert rules.

NO USABLE WINDOW FOR THIS TARGET TONIGHT

Darkness and moonlight dominate. Faint fuzzies need a genuinely dark sky more than they need steady air.

220002040608
SITE GLOW LIMITS THIS TARGET
SET UP 21:30 · OBSERVE 22:00–08:00 · 10H · MEAN 74

Seeing is everything and moonlight is irrelevant. Bright targets punch through twilight, so darkness barely counts.

220002040608
TWILIGHT BEGINS 08:00MOONLIGHT IGNORED FOR THIS TARGET
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Tolerates soft seeing, but high cloud wrecks a wide frame and moonlight raises the background everywhere.

220002040608
SITE GLOW LIMITS THIS TARGET
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Needs conditions to hold still for hours. Sustained transparency matters more than any single good hour.

220002040608
SITE GLOW LIMITS THIS TARGET
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Naked eye, whole sky. Total cloud and moonlight are the only things that count.

220002040608
SITE GLOW LIMITS THIS TARGET

Deep-sky visual is your current default.

A darker option

Wood Buffalo National Park

1,878 km away · Natural-dark sky · 21.9–21.9 mag/arcsec²

2conditions tonight
See the trade-off →

The next week of nights

Tonight
2 Nov65Moon 31%Reduced transparency is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
61
62
62
63
63
64
65
64
60
27
0
Hour
Cloud %66654334542
Transp. 0–10.200.220.230.240.250.260.270.280.280.270.28
Seeing est. /10.870.850.850.850.870.860.860.850.840.830.81
Moon alt. °-10-7-239152026303335
DarknessDarkDarkDarkDarkDarkDarkDarkDarkTwil.Twil.Twil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
61
62
62
63
63
64
65
64
60
27
Score
Low cloud
6%
6%
6%
5%
4%
3%
3%
4%
4%
3%
2%
Mid cloud
0%
0%
0%
0%
0%
0%
0%
1%
2%
1%
0%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.20
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.28
0.27
0.28
Seeing
0.87
0.85
0.85
0.85
0.87
0.86
0.86
0.85
0.84
0.83
0.81
Moon clear
down
down
down
33%
33%
32%
32%
31%
31%
31%
30%
22
23
00
01
02
03
04
05
06
07
08

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Tomorrow
3 Nov67Moon 23%Reduced transparency is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
0
24
59
67
64
57
48
25
22
13
14
5
3
3
2
0
Hour
Cloud %16321129417691919499100100100100
Transp. 0–10.370.330.320.290.270.250.260.280.310.310.390.470.530.510.450.38
Seeing est. /10.890.880.860.840.870.870.870.850.840.830.810.820.790.790.770.78
Moon alt. °-7-12-16-18-19-18-16-12-7-141016212527
DarknessTwil.Twil.Twil.DarkDarkDarkDarkDarkDarkDarkDarkDarkDarkTwil.Twil.Twil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
24
59
67
64
57
48
25
22
13
14
5
3
3
2
Score
Low cloud
1%
1%
2%
2%
1%
1%
1%
1%
0%
0%
1%
0%
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
0%
0%
16%
56%
45%
82%
73%
98%
100%
100%
100%
99%
High cloud
0%
5%
2%
2%
10%
28%
29%
43%
84%
54%
79%
89%
99%
100%
95%
99%
Transparency
0.37
0.33
0.32
0.29
0.27
0.25
0.26
0.28
0.31
0.31
0.39
0.47
0.53
0.51
0.45
0.38
Seeing
0.89
0.88
0.86
0.84
0.87
0.87
0.87
0.85
0.84
0.83
0.81
0.82
0.79
0.79
0.77
0.78
Moon clear
down
down
down
down
down
down
down
down
down
down
22%
22%
22%
21%
21%
20%
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Wednesday
4 Nov53Moon 15%Reduced transparency is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
0
10
39
53
44
35
33
38
35
35
37
39
41
48
26
0
Hour
Cloud %99825239648894778784746066452470
Transp. 0–10.350.330.310.290.280.270.250.210.210.200.180.160.140.150.150.12
Seeing est. /10.930.930.900.880.880.900.910.910.910.870.890.900.920.930.950.96
Moon alt. °-9-14-19-23-25-25-24-21-17-12-705111519
DarknessTwil.Twil.Twil.DarkDarkDarkDarkDarkDarkDarkDarkDarkDarkTwil.Twil.Twil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
10
39
53
44
35
33
38
35
35
37
39
41
48
26
Score
Low cloud
8%
6%
2%
1%
1%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
Mid cloud
81%
35%
24%
2%
1%
2%
0%
0%
1%
1%
6%
13%
0%
1%
0%
0%
High cloud
97%
70%
35%
38%
63%
88%
93%
77%
86%
84%
73%
59%
66%
45%
24%
70%
Transparency
0.35
0.33
0.31
0.29
0.28
0.27
0.25
0.21
0.21
0.20
0.18
0.16
0.14
0.15
0.15
0.12
Seeing
0.93
0.93
0.90
0.88
0.88
0.90
0.91
0.91
0.91
0.87
0.89
0.90
0.92
0.93
0.95
0.96
Moon clear
down
down
down
down
down
down
down
down
down
down
down
down
13%
13%
13%
12%
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Thursday
5 Nov23Moon 7%Cloud or fog is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
0
23
22
0
Hour
Cloud %51999887
Transp. 0–10.240.140.130.12
Seeing est. /11.000.920.971.00
Moon alt. °3-30-1713
DarknessDayDarkDarkTwil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
23
22
Score
Low cloud
1%
8%
13%
50%
Mid cloud
49%
17%
20%
28%
High cloud
1%
99%
98%
71%
Transparency
0.24
0.14
0.13
0.12
Seeing
1.00
0.92
0.97
1.00
Moon clear
10%
down
down
6%
15
21
03
09

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Friday
6 Nov0Moon 3%Cloud or fog is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
0
0
0
0
Hour
Cloud %9399100100
Transp. 0–10.130.170.160.13
Seeing est. /11.001.001.001.00
Moon alt. °2-33-266
DarknessDayDarkDarkTwil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
Score
Low cloud
25%
97%
100%
13%
Mid cloud
64%
98%
99%
100%
High cloud
80%
9%
13%
33%
Transparency
0.13
0.17
0.16
0.13
Seeing
1.00
1.00
1.00
1.00
Moon clear
5%
down
down
2%
15
21
03
09

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Saturday
7 Nov35Moon 1%Cloud or fog is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
0
35
24
0
Hour
Cloud %44459997
Transp. 0–10.160.100.140.18
Seeing est. /11.001.000.960.97
Moon alt. °1-35-35-1
DarknessDayDarkDarkTwil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
35
24
Score
Low cloud
9%
41%
20%
37%
Mid cloud
42%
7%
1%
12%
High cloud
0%
1%
99%
95%
Transparency
0.16
0.10
0.14
0.18
Seeing
1.00
1.00
0.96
0.97
Moon clear
2%
down
down
down
15
21
03
09

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Sunday
8 Nov39Moon 0%Cloud or fog is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/Anchorage)
Score
0
4
39
0
Hour
Cloud %99100744
Transp. 0–10.370.350.370.32
Seeing est. /10.860.810.770.81
Moon alt. °0-35-42-9
DarknessDayDarkDarkTwil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
4
39
Score
Low cloud
21%
16%
9%
3%
Mid cloud
77%
93%
0%
0%
High cloud
98%
99%
72%
0%
Transparency
0.37
0.35
0.37
0.32
Seeing
0.86
0.81
0.77
0.81
Moon clear
down
down
down
down
15
21
03
09

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Tap a night for its hours. Later forecasts may have wider time steps; missing hours are not interpolated.

Planning a trip?

Compare the next eight weekends → · Best months to visit → · Moonless nights →

About this forecast

Exact-coordinate weather, sky geometry and site context.

Full method →20-year baseline →
Sources and scoring details openclose

Conditions for Fairbanks, Alaska, United States are computed from the MET Norway forecast model for these exact coordinates, combined with sun and moon positions we calculate directly. The score weighs cloud cover by layer, atmospheric transparency, estimated seeing, moonlight and astronomical twilight. Site darkness is shown separately, then used only where artificial skyglow physically changes moon contrast, haze scattering, visual limits and target suitability.