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Rule Fog Hunter

Inversnaid - Fog Hunter - Trossachs & Loch Lomond

Inversnaid, Scotland, United Kingdom

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No Fog Hunter opportunities in the next 14 days

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Rule requirements (key thresholds)
Fog Probability · ≥ 75.0%

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Fog Probability 100% failing

Currently

Real-time conditions
Dewpoint Spread4.5°C
Visibility24135 (Clear)
Relative Humidity74%
Wind Speed2.4m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

This forecast identifies when fog and mist conditions create atmospheric photography opportunities across the Trossachs lochs and glens. We track temperature, humidity, wind, and overnight cooling to predict when dawn mist will form over forest-fringed lochs and settle into wooded valleys.

The Trossachs—"the Highlands in miniature"—sits where Lowland Scotland meets the Highlands, creating perfect conditions for mist formation. Cool Highland air draining down valleys meets warmer air over the lochs, while dense oak and birch forests trap moisture overnight. The result is frequent dawn mist that transforms intimate lochs and wooded glens into scenes of ethereal beauty.

What makes the Trossachs special for fog photography:

  • Forest-fringed lochs - Loch Ard and Loch Chon with native woodland creating layered mist scenes
  • Valley fog formation - Glen Finglas and other glens trap overnight mist between mountains
  • Intimate scale - Smaller lochs allow compositions that capture both mist and reflections
  • Seasonal reliability - Autumn (September-November) brings most reliable mist conditions with calm nights

Loch Ard near Aberfoyle offers the Trossachs' most reliable dawn mist—native forest comes right to the water's edge, creating layered compositions as mist rises through trees. The forest pier at dawn with mist swirling around ancient oaks is magical. Loch Chon, deeper into the forest, sees even more atmospheric conditions due to its remote, sheltered position. The Trossachs Pier on Loch Katrine with the historic steamship and Ben Venue emerging from mist creates classic Scottish landscape scenes. Timing is critical—arrive in darkness, position yourself 30 minutes before sunrise, and capture the 1-2 hour window as mist lifts and breaks. Conditions change rapidly once sun hits the water.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 79 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 75.0%
Sun, May 24
06:0030%
07:0027%
08:0048%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Mon, May 25
24:000%
01:0055%
02:0055%
03:0055%
04:0058%
05:0071%
06:0071%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:0055%
Tue, May 26
24:0055%
01:0055%
02:0055%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, May 27
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog Probability mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
Europe/London
Clear Sky Probability (Ensemble)
%
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Solar Elevation
°
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Sun, May 24 Sunrise 04:49 Sunset 21:42
14:00
0% 11°C 0mm 74% 0cm 54° 15°C 0mm 0.44kPa 24135m 5m/s 2.4m/s
15:00
1% 10°C 0mm 68% 0cm 50° 16°C 0.06mm 0.59kPa 24135m 6m/s 3.2m/s
16:00
1% 9.9°C 0mm 64% 0cm 43° 17°C 0.13mm 0.7kPa 24134m 6.8m/s 4.1m/s
17:00
1% 10°C 0mm 65% 0cm 36° 17°C 0.13mm 0.67kPa 24134m 7.3m/s 4.8m/s
18:00
2% 11°C 0mm 69% 0cm 28° 17°C 0.13mm 0.58kPa 24134m 7.5m/s 4.5m/s
19:00
2% 11°C 0mm 72% 0cm 19° 16°C 0.13mm 0.51kPa 24134m 6.8m/s 2.7m/s
20:00
12% 12°C 0mm 80% 0cm 11° 15°C 0mm 0.35kPa 24135m 2.3m/s 1.6m/s
21:00
23% 11°C 0mm 88% 0cm 4.1° 13°C 0.06mm 0.18kPa 24134m 1.4m/s 1.5m/s
22:00
33% 10°C 0mm 93% 0cm -2.4° 11°C 0.06mm 0.09kPa 24135m 1.2m/s 1.3m/s
23:00
32% 9.9°C 0mm 94% 0cm -7.7° 11°C 0.06mm 0.08kPa 24134m 1m/s 1.1m/s
Mon, May 25 Sunrise 04:49 Sunset 21:42
24:00
31% 9.3°C 0mm 95% 0cm -11° 10°C 0.06mm 0.07kPa 24135m 0.91m/s 0.95m/s
01:00
30% 8.9°C 0mm 95% 0cm -13° 9.6°C 0.06mm 0.06kPa 24135m 0.8m/s 0.91m/s
02:00
53% 8.6°C 0mm 96% 0cm -12° 9.2°C 0mm 0.05kPa 24135m 1m/s 1.1m/s
03:00
76% 8.2°C 0mm 96% 0cm -9.7° 8.8°C 0mm 0.04kPa 24135m 1m/s 1m/s
04:00
99% 8.1°C 0mm 97% 0cm -5.3° 8.5°C 0mm 0.03kPa 24135m 1.1m/s 1.1m/s
05:00
99% 7.8°C 0mm 97% 0cm 0.86° 8.2°C 0mm 0.03kPa 24134m 1.1m/s 1.2m/s
06:00
99% 8.5°C 0mm 98% 0cm 7.5° 8.9°C 0mm 0.03kPa 24134m 1.2m/s 1.3m/s
07:00
99% 9.6°C 0mm 91% 0cm 15° 11°C 0mm 0.12kPa 24134m 1.8m/s 1.4m/s
08:00
92% 9.9°C 0mm 82% 0cm 23° 13°C 0mm 0.27kPa 24135m 2.5m/s 1.6m/s
09:00
85% 9.7°C 0mm 72% 0cm 32° 15°C 0mm 0.46kPa 24134m 5.9m/s 1.9m/s
10:00
78% 10°C 0mm 70% 0cm 40° 16°C 0mm 0.53kPa 24135m 5.8m/s 2.4m/s
11:00
74% 10°C 0mm 68% 0cm 47° 16°C 0mm 0.58kPa 24135m 6.8m/s 2.9m/s
12:00
70% 10°C 0mm 65% 0cm 52° 17°C 0mm 0.67kPa 24134m 7.9m/s 4.1m/s
13:00
66% 10°C 0mm 62% 0cm 55° 17°C 0.06mm 0.75kPa 24135m 8.3m/s 4.8m/s
14:00
65% 10°C 0mm 64% 0cm 54° 17°C 0mm 0.72kPa 24134m 8.8m/s 5.4m/s
15:00
63% 11°C 0mm 65% 0cm 50° 17°C 0mm 0.68kPa 24134m 8.4m/s 4.7m/s
16:00
62% 11°C 0mm 67% 0cm 44° 17°C 0mm 0.62kPa 24134m 8.9m/s 5m/s
17:00
62% 11°C 0mm 70% 0cm 36° 16°C 0mm 0.54kPa 24134m 8.6m/s 4.2m/s
18:00
63% 11°C 0mm 72% 0cm 28° 16°C 0mm 0.5kPa 24135m 7.7m/s 3m/s
19:00
63% 11°C 0mm 74% 0cm 20° 16°C 0.06mm 0.46kPa 24134m 6.9m/s 2.4m/s
20:00
72% 12°C 0mm 82% 0cm 12° 15°C 0mm 0.31kPa 24135m 6.4m/s 1.7m/s
21:00
82% 11°C 0mm 88% 0cm 4.3° 13°C 0.06mm 0.18kPa 24134m 1.7m/s 1.6m/s
22:00
91% 10°C 0mm 95% 0cm -2.3° 11°C 0.06mm 0.07kPa 24135m 1.3m/s 1.5m/s
23:00
89% 9.7°C 0mm 96% 0cm -7.5° 10°C 0.06mm 0.05kPa 24134m 1.3m/s 1.5m/s
Tue, May 26 Sunrise 04:48 Sunset 21:44
24:00
87% 9.2°C 0mm 96% 0cm -11° 9.8°C 0.06mm 0.04kPa 24134m 1.3m/s 1.5m/s
01:00
85% 8.7°C 0mm 96% 0cm -13° 9.3°C 0.06mm 0.05kPa 24135m 1.3m/s 1.5m/s
02:00
84% 8.1°C 0mm 95% 0cm -12° 8.9°C 0mm 0.06kPa 24134m 1.3m/s 1.5m/s
03:00
83% 7.7°C 0mm 94% 0cm -9.5° 8.6°C 0mm 0.06kPa 24135m 1.3m/s 1.5m/s
04:00
82% 7.3°C 0mm 93% 0cm -5.2° 8.4°C 0mm 0.07kPa 24134m 1.4m/s 1.6m/s
05:00
84% 7.3°C 0mm 93% 0cm 0.99° 8.4°C 0mm 0.08kPa 24134m 1.5m/s 1.7m/s
06:00
85% 7.6°C 0mm 91% 0cm 7.7° 9.1°C 0mm 0.11kPa 24134m 1.6m/s 1.7m/s
07:00
87% 8.5°C 0mm 84% 0cm 15° 11°C 0mm 0.21kPa 24135m 1.8m/s 1.5m/s
08:00
84% 8.2°C 0mm 76% 0cm 24° 12°C 0mm 0.35kPa 24134m 1.8m/s 1.5m/s
09:00
81% 7.9°C 0mm 65% 0cm 32° 14°C 0mm 0.57kPa 24135m 1.6m/s 1.6m/s
10:00
78% 7.8°C 0mm 62% 0cm 40° 15°C 0mm 0.65kPa 24134m 1.7m/s 1.5m/s
11:00
77% 8.1°C 0mm 56% 0cm 47° 17°C 0mm 0.83kPa 24135m 2m/s 1.5m/s
12:00
75% 8.6°C 0mm 53% 0cm 52° 18°C 0mm 0.98kPa 24134m 2.1m/s 1.3m/s
13:00
74% 9°C 0mm 52% 0cm 55° 19°C 0mm 1.1kPa 24134m 2.1m/s 1.5m/s
14:00
69% 9.1°C 0mm 51% 0cm 54° 20°C 0mm 1.1kPa 24134m 2.2m/s 1.7m/s
15:00
63% 9.3°C 0mm 51% 0cm 50° 20°C 0mm 1.1kPa 24135m 1.9m/s 1.8m/s
16:00
58% 9.4°C 0mm 51% 0cm 44° 20°C 0mm 1.1kPa 24135m 1.6m/s 1.6m/s
17:00
57% 9.5°C 0mm 51% 0cm 36° 20°C 0mm 1.1kPa 24134m 1.1m/s 1.6m/s
18:00
57% 9.7°C 0mm 54% 0cm 28° 19°C 0mm 1kPa 24135m 1.1m/s 1.5m/s
19:00
56% 11°C 0mm 60% 0cm 20° 19°C 0mm 0.87kPa 24134m 0.82m/s 0.96m/s
20:00
57% 9.3°C 0mm 69% 0cm 12° 15°C 0mm 0.53kPa 24134m 1.2m/s 1.3m/s
21:00
58% 7.6°C 0mm 78% 0cm 4.4° 11°C 0mm 0.29kPa 24135m 1.5m/s 1.6m/s
22:00
59% 5.6°C 0mm 87% 0cm -2.1° 7.6°C 0mm 0.13kPa 24135m 1.9m/s 1.9m/s
23:00
48% 5.7°C 0mm 84% 0cm -7.3° 8.3°C 0mm 0.18kPa 24135m 2.2m/s 1.8m/s
Wed, May 27 Sunrise 04:46 Sunset 21:45
24:00
36% 5.9°C 0mm 80% 0cm -11° 9.1°C 0mm 0.23kPa 24135m 2.4m/s 1.8m/s
01:00
25% 6°C 0mm 77% 0cm -12° 9.9°C 0mm 0.28kPa 24135m 2.7m/s 1.8m/s
02:00
20% 6.9°C 0mm 74% 0cm -12° 11°C 0mm 0.35kPa 24135m 2.8m/s 2m/s
03:00
14% 7.7°C 0mm 71% 0cm -9.4° 13°C 0mm 0.43kPa 24135m 2.9m/s 2.1m/s
04:00
9% 8.5°C 0mm 68% 0cm -5° 14°C 0mm 0.52kPa 24135m 3m/s 2.3m/s
05:00
9% 9.4°C 0mm 67% 0cm 1.1° 16°C 0mm 0.59kPa 24135m 3.1m/s 2.6m/s
06:00
9% 10°C 0mm 66% 0cm 7.8° 17°C 0mm 0.66kPa 24135m 3.1m/s 2.8m/s
07:00
9% 11°C 0mm 64% 0cm 15° 18°C 0mm 0.73kPa 24135m 3.1m/s 3m/s
08:00
13% 12°C 0mm 64% 0cm 24° 19°C 0mm 0.77kPa 24135m 3.3m/s 3.2m/s
09:00
17% 12°C 0mm 64% 0cm 32° 19°C 0mm 0.8kPa 24135m 3.5m/s 3.4m/s
10:00
21% 13°C 0mm 64% 0cm 40° 20°C 0mm 0.83kPa 24135m 3.7m/s 3.5m/s
11:00
22% 13°C 0mm 67% 0cm 47° 19°C 0mm 0.74kPa 24135m 3.9m/s 3.3m/s
12:00
23% 13°C 0mm 70% 0cm 52° 19°C 0mm 0.65kPa 24135m 4.2m/s 3.2m/s
13:00
24% 13°C 0mm 73% 0cm 55° 18°C 0mm 0.57kPa 24135m 4.4m/s 3m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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