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Tonight · Tue, 3 November 2026

St. John's

Tonight’s hourly cloud, moonlight and observing conditions.

47.565°N 52.709°W ·35 m ·Newfoundland and Labrador, Canada
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Tonight · peak score /100
0Not worth it
No usable window
best window
Limited by
Low cloud
Why this matters

99% low cloud at the best hour. Low cloud is opaque — it gates everything else. Read the guide →

Also limiting: Transparency. See the guide →

Site details and actions
Site darkness · peer measure
Bright skyNot multiplied into the conditions score
19.6–20.2 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 St. John's, Newfoundland and Labrador →Moonless nights →
Tonight in context · local sky & season

November historically: 0.7 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 7.3h 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
None tonight
Window quality
—
Astronomical dark
03:30 – 05:30
Moon
Waning crescent, 33%
Transparency at peak
0.10
Seeing at peak (est.)
0.58
Visual limit (modelled)
3.5–5.5 mag

The night, hour by hour

Colour = score · Luminance = everything else
Score 0–100 · underline marks the best window · local time (America/St_Johns)
Score
0
0
0
0
Hour
Cloud %100100100100
Transp. 0–10.100.100.100.10
Seeing est. /10.580.620.640.62
Moon alt. °31404752
DarknessDarkDarkTwil.Twil.
Inspect all cloud layers and score factors
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
Score
Low cloud
99%
100%
98%
100%
Mid cloud
100%
100%
100%
99%
High cloud
10%
0%
0%
0%
Transparency
0.10
0.10
0.10
0.10
Seeing
0.58
0.62
0.64
0.62
Moon clear
35%
34%
34%
33%
03
04
05
06
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
03 Not worth it · 0/100
Starting from
100
Cloud
−100
Transparency
−0
Seeing
−0
Moonlight
−0
Darkness
−0
Score
0
CLOUD 100% LOW 99% MID 100% HIGH 10% SUN -33.5° MOON 31.4° / 35% WIND 6 TEMP 5°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.
Tonight is for planning

The sky is staying closed.

None of the five observing modes reaches a reliable setup window. Skip the empty charts and use tonight to make the next clear session easier.

Cloud stays at 100% or moreTransparency peaks at 0.10
Make the next clear night easier

Three useful moves, no dead chart.

The forecast detail above remains available when you need the measurements. These are the useful next decisions.

Scan the next seven nights → Read cloud by layer → Use tonight for equipment prep →
Remember what you observe

Your target still carries into clear-night recommendations and future alert rules.

Deep-sky visual is your current default.

A darker option

Katahdin Woods and Waters

1,223 km away · Natural-dark sky · 21.8–21.9 mag/arcsec²

9conditions tonight
See the trade-off →

The next week of nights

Tonight
2 Nov0Moon 33%Cloud or fog is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/St_Johns)
Score
0
0
0
0
Hour
Cloud %100100100100
Transp. 0–10.100.100.100.10
Seeing est. /10.580.620.640.62
Moon alt. °31404752
DarknessDarkDarkTwil.Twil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
Score
Low cloud
99%
100%
98%
100%
Mid cloud
100%
100%
100%
99%
High cloud
10%
0%
0%
0%
Transparency
0.10
0.10
0.10
0.10
Seeing
0.58
0.62
0.64
0.62
Moon clear
35%
34%
34%
33%
03
04
05
06

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

Tomorrow
3 Nov73Moon 26%Reduced transparency is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/St_Johns)
Score
0
17
65
67
73
70
58
52
54
64
64
63
63
40
0
Hour
Cloud %0012902172622700000
Transp. 0–10.730.610.600.600.540.480.480.440.420.370.250.230.230.240.24
Seeing est. /10.550.560.530.490.570.600.570.600.620.650.680.690.680.690.72
Moon alt. °-20-27-32-34-34-31-25-18-901019283643
DarknessDayTwil.DarkDarkDarkDarkDarkDarkDarkDarkDarkDarkDarkTwil.Twil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
17
65
67
73
70
58
52
54
64
64
63
63
40
Score
Low cloud
0%
0%
12%
9%
0%
2%
17%
26%
22%
7%
0%
0%
0%
0%
0%
Mid cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.73
0.61
0.60
0.60
0.54
0.48
0.48
0.44
0.42
0.37
0.25
0.23
0.23
0.24
0.24
Seeing
0.55
0.56
0.53
0.49
0.57
0.60
0.57
0.60
0.62
0.65
0.68
0.69
0.68
0.69
0.72
Moon clear
down
down
down
down
down
down
down
down
down
25%
25%
24%
24%
23%
23%
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06

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

Wednesday
4 Nov73Moon 16%Reduced transparency is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/St_Johns)
Score
0
17
73
72
68
65
63
65
68
69
56
45
54
42
0
Hour
Cloud %1296532410131322031
Transp. 0–10.500.450.440.390.300.200.170.170.230.260.270.240.220.190.17
Seeing est. /10.890.850.870.940.900.900.910.930.920.910.890.890.900.880.87
Moon alt. °-18-27-34-39-41-40-36-29-21-12-27162532
DarknessDayTwil.DarkDarkDarkDarkDarkDarkDarkDarkDarkDarkDarkTwil.Twil.
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
17
73
72
68
65
63
65
68
69
56
45
54
42
Score
Low cloud
1%
2%
0%
0%
2%
2%
2%
1%
0%
0%
0%
0%
0%
0%
1%
Mid cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
2%
28%
20%
3%
0%
High cloud
11%
7%
6%
5%
1%
0%
2%
0%
0%
1%
31%
20%
0%
0%
0%
Transparency
0.50
0.45
0.44
0.39
0.30
0.20
0.17
0.17
0.23
0.26
0.27
0.24
0.22
0.19
0.17
Seeing
0.89
0.85
0.87
0.94
0.90
0.90
0.91
0.93
0.92
0.91
0.89
0.89
0.90
0.88
0.87
Moon clear
down
down
down
down
down
down
down
down
down
down
down
15%
15%
15%
15%
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06

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

Thursday
5 Nov45Moon 10%Reduced transparency is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/St_Johns)
Score
0
45
0
0
Hour
Cloud %1946100100
Transp. 0–10.440.160.100.10
Seeing est. /10.560.740.630.57
Moon alt. °4-46-1532
DarknessDayDarkDarkDay
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
45
Score
Low cloud
1%
1%
100%
100%
Mid cloud
0%
2%
53%
81%
High cloud
19%
45%
98%
98%
Transparency
0.44
0.16
0.10
0.10
Seeing
0.56
0.74
0.63
0.57
Moon clear
12%
down
down
7%
14
20
02
08

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

Friday
6 Nov2Moon 4%Cloud or fog is the strongest score limit at the best sampled time. ↓
Score 0–100 · underline marks the best window · local time (America/St_Johns)
Score
0
0
2
0
Hour
Cloud %1009997100
Transp. 0–10.100.100.100.10
Seeing est. /10.820.880.810.86
Moon alt. °6-49-2624
DarknessDayDarkDarkDay
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
2
Score
Low cloud
100%
98%
96%
88%
Mid cloud
1%
30%
0%
100%
High cloud
29%
60%
20%
20%
Transparency
0.10
0.10
0.10
0.10
Seeing
0.82
0.88
0.81
0.86
Moon clear
6%
down
down
3%
14
20
02
08

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

Saturday
7 Nov0Moon 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/St_Johns)
Score
0
0
0
0
Hour
Cloud %100100100100
Transp. 0–10.100.100.100.10
Seeing est. /10.810.810.650.65
Moon alt. °9-48-3715
DarknessDayDarkDarkDay
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
Score
Low cloud
100%
100%
100%
100%
Mid cloud
100%
100%
100%
100%
High cloud
19%
94%
86%
98%
Transparency
0.10
0.10
0.10
0.10
Seeing
0.81
0.81
0.65
0.65
Moon clear
2%
down
down
1%
14
20
02
08

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

Sunday
8 Nov2Moon 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/St_Johns)
Score
0
0
2
0
Hour
Cloud %100100100100
Transp. 0–10.100.100.100.10
Seeing est. /10.750.830.770.52
Moon alt. °10-45-486
DarknessDayDarkDarkDay
All factors for this night
Sky state
Shaded = daylight and twilight  ·  unshaded = astronomical dark
2
Score
Low cloud
98%
100%
23%
100%
Mid cloud
91%
100%
100%
40%
High cloud
71%
91%
100%
33%
Transparency
0.10
0.10
0.10
0.10
Seeing
0.75
0.83
0.77
0.52
Moon clear
0%
down
down
0%
14
20
02
08

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 St. John's, Newfoundland and Labrador, Canada 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.