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Tonight · Sat, 10 October 2026

Scottsdale stargazing forecast tonight

Hourly clear-sky conditions for observing: cloud by layer, transparency, estimated seeing, moonlight and true astronomical darkness.

33.509°N 111.899°W ·382 m ·Arizona, United States

NearbyMesaPhoenixFountain HillsChandlerMore nearby
77
/100
Excellent conditions
at peak

A genuinely good night — 10 hours of clear, dark sky from 20:00.

Site darkness · peer measure
Bright urban skyNot multiplied into the conditions score
18.0–18.8 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 Scottsdale, Arizona →Moonless nights →
Tonight in context · local sky & season

October historically: 21.5 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 8.7h 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
20:00 – 06:00
Window quality
56 / 100 avg
Astronomical dark
20:00 – 06:00
Moon
New moon, 1%
Transparency at peak
0.99
Seeing at peak (est.)
0.91
Visual limit (modelled)
3.5–5.0 mag
Tonight's limiting factor
Nothing much

No single factor is holding this night back. Go out.

The night, hour by hour

Colour = score · Luminance = everything else
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
22
54
64
77
50
35
75
67
42
53
45
3
Score
BEST WINDOW · 11 H
Low cloud
0%
0%
0%
0%
0%
0%
3%
0%
7%
15%
10%
11%
13%
11%
Mid cloud
42%
24%
10%
8%
11%
36%
40%
2%
14%
22%
15%
19%
30%
13%
High cloud
88%
97%
71%
52%
22%
13%
28%
2%
2%
2%
0%
0%
0%
0%
Transparency
1.00
1.00
1.00
1.00
0.99
0.55
0.24
0.57
0.65
0.12
0.30
0.10
0.10
0.39
Seeing
0.97
0.99
0.91
0.86
0.91
0.87
0.78
0.73
0.87
0.85
0.78
0.79
0.69
0.59
Moon clear
0%
down
down
down
down
down
down
down
down
down
down
down
down
down
18
19
20
21
22
23
00
01
02
03
04
05
06
07
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
22 Excellent · 77/100
Starting from
100
Cloud
−21
Transparency
−0
Seeing
−2
Moonlight
−0
Darkness
−0
Score
77
CLOUD 29% LOW 0% MID 11% HIGH 22% SUN -49.0° MOON -48.8° / 1% WIND 3 TEMP 28°
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.

18202200020406
SITE GLOW LIMITS THIS TARGET
SET UP 19:30 · OBSERVE 20:00–06:00 · 10H · MEAN 59

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

18202200020406
HIGH CLOUD CLEARS 20:00TWILIGHT BEGINS 06:00MOONLIGHT 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.

18202200020406
SITE GLOW LIMITS THIS TARGET
SET UP 00:30 · OBSERVE 01:00–02:00 · 1H · MEAN 37

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

18202200020406
HIGH CLOUD CLEARS 01:00SITE GLOW LIMITS FAINT TARGETS
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

18202200020406
SITE GLOW LIMITS THIS TARGET

Deep-sky visual is your current default.

A darker option

Kitt Peak National Observatory

175 km away · Threatened dark sky · 21.6–21.7 mag/arcsec²

82conditions tonight
See the trade-off →

The next week of nights

Tonight · 10 Oct
77
Excellent
MOON 1%
20:00–06:00
Tomorrow · 11 Oct
71
Good
MOON 3%
00:00–06:00
Monday · 12 Oct
70
Good
MOON 7%
20:00–00:00
Tuesday · 13 Oct
70
Good
MOON 15%
23:00–00:00
Wednesday · 14 Oct
67
Good
MOON 22%
23:00–00:00
Thursday · 15 Oct
79
Excellent
MOON 31%
05:00–06:00
Friday · 16 Oct
71
Good
MOON 40%
23:00–00:00

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

Tonight · 10 Oct · forecast times
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
22
54
64
77
50
35
75
67
42
53
45
3
Score
Low cloud
0%
0%
0%
0%
0%
0%
3%
0%
7%
15%
10%
11%
13%
11%
Mid cloud
42%
24%
10%
8%
11%
36%
40%
2%
14%
22%
15%
19%
30%
13%
High cloud
88%
97%
71%
52%
22%
13%
28%
2%
2%
2%
0%
0%
0%
0%
Transparency
1.00
1.00
1.00
1.00
0.99
0.55
0.24
0.57
0.65
0.12
0.30
0.10
0.10
0.39
Seeing
0.97
0.99
0.91
0.86
0.91
0.87
0.78
0.73
0.87
0.85
0.78
0.79
0.69
0.59
Moon clear
0%
down
down
down
down
down
down
down
down
down
down
down
down
down
18
19
20
21
22
23
00
01
02
03
04
05
06
07

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

Tomorrow · 11 Oct · forecast times
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
34
43
35
50
30
54
60
65
71
45
41
3
Score
Low cloud
2%
2%
5%
23%
9%
17%
10%
2%
0%
0%
3%
11%
9%
18%
Mid cloud
45%
31%
45%
29%
13%
46%
6%
2%
2%
1%
30%
29%
36%
23%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.65
0.55
0.44
0.10
0.10
0.10
0.10
0.10
0.23
0.32
0.10
0.10
0.10
0.10
Seeing
0.73
0.85
0.86
0.89
0.84
0.91
0.93
0.89
0.84
0.92
0.94
0.93
0.83
0.86
Moon clear
3%
down
down
down
down
down
down
down
down
down
down
down
down
down
18
19
20
21
22
23
00
01
02
03
04
05
06
07

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

Monday · 12 Oct · forecast times
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
28
45
70
66
54
23
Score
Low cloud
7%
6%
17%
0%
0%
0%
41%
52%
Mid cloud
20%
44%
28%
3%
6%
24%
44%
86%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.75
0.45
0.35
0.31
0.26
0.22
0.10
0.45
Seeing
0.86
0.94
0.92
0.99
1.00
1.00
1.00
1.00
Moon clear
7%
7%
down
down
down
down
down
10%
18
19
20
21
22
23
05
11

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

Tuesday · 13 Oct · forecast times
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
70
64
Score
Low cloud
2%
2%
2%
0%
Mid cloud
6%
0%
0%
0%
High cloud
0%
0%
0%
0%
Transparency
0.68
0.28
0.12
0.70
Seeing
1.00
1.00
1.00
1.00
Moon clear
12%
down
down
17%
17
23
05
11

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

Wednesday · 14 Oct · forecast times
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
67
64
Score
Low cloud
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
High cloud
0%
0%
0%
0%
Transparency
0.89
0.18
0.10
0.82
Seeing
1.00
1.00
1.00
1.00
Moon clear
19%
down
down
down
17
23
05
11

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

Thursday · 15 Oct · forecast times
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
72
79
Score
Low cloud
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
High cloud
0%
0%
0%
0%
Transparency
0.86
0.30
0.48
0.94
Seeing
1.00
1.00
1.00
1.00
Moon clear
27%
down
down
down
17
23
05
11

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

Friday · 16 Oct · forecast times
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
71
70
Score
Low cloud
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
High cloud
0%
0%
0%
0%
Transparency
1.00
0.26
0.26
0.94
Seeing
1.00
1.00
1.00
1.00
Moon clear
35%
down
down
down
17
23
05
11

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

Planning a trip?

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

More nearby locations 8 options · openclose

About this forecast

Exact-coordinate weather, sky geometry and site context.

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

Conditions for Scottsdale, Arizona, 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.