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More Fog Hunter in Trossachs & Loch Lomond
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Rule Fog Hunter

Ben A'an - Fog Hunter - Trossachs & Loch Lomond

Callander, 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
Fog Probability
0%
Dewpoint Spread2.7°C
Visibility24134 (Clear)
Relative Humidity82%
Wind Speed1.5m/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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 75.0%
Fri, May 15
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%
Sat, May 16
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%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:0027%
20:0041%
21:0041%
22:0063%
23:0068%
Sun, May 17
24:0066%
01:0044%
02:0055%
03:0055%
04:0055%
05:0055%
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%
23:000%
Mon, May 18
24:0055%
01:0055%
02:0055%
03:0071%
04:0071%
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%
22:0055%
23:0055%
Tue, May 19
24:0055%
01:0030%
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
Sat, May 16 Sunrise 05:01 Sunset 21:26
03:00 ☾
95% -2.4°C 0mm 82% 0cm -11° 0.29°C 0mm 0.11kPa 24134m 1.4m/s 1.5m/s
04:00 ☾
92% -2.4°C 0mm 80% 0cm -6.9° 0.68°C 0mm 0.13kPa 24134m 1.3m/s 1.4m/s
05:00 ☾
91% -2.4°C 0mm 80% 0cm -0.59° 0.58°C 0mm 0.13kPa 24135m 1.2m/s 1.3m/s
06:00
89% -2.3°C 0mm 79% 0cm 6.3° 0.9°C 0mm 0.14kPa 24134m 1.1m/s 1.2m/s
07:00
88% -1.8°C 0mm 71% 0cm 14° 3°C 0mm 0.22kPa 24135m 0.52m/s 0.49m/s
08:00
79% -1.2°C 0mm 65% 0cm 22° 4.8°C 0mm 0.3kPa 24135m 0.41m/s 0.61m/s
09:00
69% -0.7°C 0mm 61% 0cm 31° 6.1°C 0mm 0.36kPa 24135m 1m/s 1.3m/s
10:00
60% -0.4°C 0mm 58% 0cm 38° 7.3°C 0mm 0.43kPa 24134m 1.6m/s 1.7m/s
11:00
50% -0.4°C 0mm 54% 0cm 45° 8.4°C 0mm 0.51kPa 24135m 1.9m/s 1.9m/s
12:00
39% -0.5°C 0mm 50% 0cm 50° 9.4°C 0mm 0.59kPa 24135m 2.4m/s 2.1m/s
13:00
29% -0.5°C 0mm 48% 0cm 53° 10°C 0mm 0.65kPa 24135m 3m/s 2.3m/s
14:00
19% -0.2°C 0mm 46% 0cm 52° 11°C 0mm 0.69kPa 24134m 3.4m/s 2.8m/s
15:00
10% 0.8°C 0mm 50% 0cm 48° 11°C 0mm 0.66kPa 24135m 3.7m/s 3.8m/s
16:00
0% 2.7°C 0mm 61% 0cm 42° 9.8°C 0mm 0.47kPa 24134m 4.5m/s 4.9m/s
17:00
0% 3.9°C 0.01mm 73% 0cm 34° 8.4°C 0mm 0.29kPa 24134m 4.3m/s 4m/s
18:00
0% 4.8°C 0.38mm 87% 0cm 26° 6.9°C 0.25mm 0.13kPa 16568m 3.2m/s 2.6m/s
19:00
0% 5.2°C 0.69mm 96% 0cm 18° 5.7°C 0.88mm 0.03kPa 13035m 2.4m/s 1.9m/s
20:00
0% 5°C 0.34mm 98% 0cm 9.7° 5.2°C 0.63mm 0.01kPa 22874m 1.9m/s 1.5m/s
21:00
0% 5°C 0mm 99% 0cm 2.5° 5.2°C 0.69mm 0.01kPa 24134m 2m/s 1.4m/s
22:00 ☾
0% 5.1°C 0.2mm 99% 0cm -4.2° 5.2°C 0.75mm 0.01kPa 1228m 2.5m/s 1.6m/s
23:00 ☾
0% 5.2°C 0mm 99% 0cm -9.4° 5.3°C 0.81mm 0.01kPa 467m 2m/s 1.4m/s
Sun, May 17 Sunrise 05:01 Sunset 21:26
24:00 ☾
1% 4.9°C 0mm 99% 0cm -13° 5°C 0.81mm 0.01kPa 537m 2.8m/s 1.8m/s
01:00 ☾
1% 4.5°C 0mm 98% 0cm -14° 4.8°C 0.81mm 0.02kPa 8720m 2.7m/s 1.9m/s
02:00 ☾
16% 4°C 0mm 97% 0cm -14° 4.5°C 0mm 0.03kPa 24135m 2.7m/s 2m/s
03:00 ☾
32% 3.4°C 0mm 96% 0cm -11° 3.9°C 0.06mm 0.03kPa 24135m 2.6m/s 2.1m/s
04:00 ☾
47% 2.5°C 0mm 96% 0cm -6.7° 3.1°C 0.06mm 0.03kPa 24135m 2.3m/s 2m/s
05:00
41% 2.2°C 0mm 97% 0cm -0.29° 2.7°C 0.06mm 0.02kPa 24135m 2.5m/s 2.1m/s
06:00
36% 2.8°C 0mm 97% 0cm 6.5° 3.1°C 0.06mm 0.02kPa 14890m 2.9m/s 2m/s
07:00
30% 3.5°C 0mm 92% 0cm 14° 4.8°C 0.06mm 0.07kPa 24134m 5.7m/s 2.3m/s
08:00
23% 3.9°C 0mm 86% 0cm 22° 6.1°C 0mm 0.13kPa 24134m 6.5m/s 2.9m/s
09:00
15% 3.5°C 0mm 78% 0cm 31° 7°C 0.06mm 0.22kPa 21220m 7.6m/s 3.9m/s
10:00
8% 3.1°C 0mm 74% 0cm 39° 7.4°C 0.19mm 0.26kPa 14859m 7.8m/s 4.7m/s
11:00
6% 3.3°C 0mm 74% 0cm 46° 7.8°C 0.38mm 0.28kPa 5441m 7.9m/s 5.3m/s
12:00
5% 4.1°C 0mm 78% 0cm 51° 7.7°C 0.69mm 0.23kPa 19828m 7.8m/s 5.2m/s
13:00
3% 3.5°C 0mm 72% 0cm 53° 8.2°C 1mm 0.31kPa 15161m 8m/s 5.3m/s
14:00
6% 2.8°C 0mm 63% 0cm 52° 9.4°C 0.25mm 0.43kPa 24135m 7.9m/s 5.5m/s
15:00
8% 3.6°C 0mm 69% 0cm 48° 9°C 0.5mm 0.35kPa 18358m 7.4m/s 5.3m/s
16:00
11% 4.6°C 0mm 76% 0cm 42° 8.5°C 0.75mm 0.26kPa 20699m 6.7m/s 4.5m/s
17:00
10% 4.6°C 0mm 73% 0cm 34° 9.2°C 1.1mm 0.31kPa 13422m 6.2m/s 5.1m/s
18:00
8% 5.2°C 0mm 86% 0cm 26° 7.5°C 1.4mm 0.15kPa 20498m 5.6m/s 3.5m/s
19:00
7% 4.6°C 0mm 82% 0cm 18° 7.4°C 1.6mm 0.18kPa 24135m 3.2m/s 1.7m/s
20:00
14% 4.8°C 0mm 85% 0cm 9.9° 7.2°C 0.06mm 0.16kPa 24135m 2m/s 1.3m/s
21:00
20% 3.9°C 0mm 88% 0cm 2.7° 5.7°C 0.06mm 0.11kPa 24134m 0.92m/s 0.95m/s
22:00 ☾
27% 2.8°C 0mm 92% 0cm -4° 4.1°C 0.06mm 0.07kPa 24135m 0.7m/s 0.66m/s
23:00 ☾
26% 2.2°C 0mm 93% 0cm -9.2° 3.2°C 0.06mm 0.05kPa 24134m 0.51m/s 0.54m/s
Mon, May 18 Sunrise 04:59 Sunset 21:28
24:00 ☾
25% 2.1°C 0mm 95% 0cm -13° 2.9°C 0.06mm 0.04kPa 24134m 0.52m/s 0.45m/s
01:00 ☾
24% 1.9°C 0mm 96% 0cm -14° 2.5°C 0.06mm 0.03kPa 24135m 0.52m/s 0.52m/s
02:00 ☾
28% 1.8°C 0mm 97% 0cm -14° 2.3°C 0mm 0.02kPa 24134m 0.34m/s 0.35m/s
03:00 ☾
31% 1.8°C 0mm 97% 0cm -11° 2.2°C 0mm 0.02kPa 24134m 0.3m/s 0.3m/s
04:00 ☾
35% 2.1°C 0mm 97% 0cm -6.4° 2.5°C 0mm 0.02kPa 24134m 0.4m/s 0.33m/s
05:00
33% 2.2°C 0mm 98% 0cm 0.02° 2.6°C 0mm 0.02kPa 24134m 0.41m/s 0.33m/s
06:00
31% 2.7°C 0mm 97% 0cm 6.7° 3.1°C 0mm 0.02kPa 24135m 0.52m/s 0.49m/s
07:00
29% 3.6°C 0mm 94% 0cm 14° 4.6°C 0mm 0.05kPa 24135m 0.6m/s 0.49m/s
08:00
30% 4.8°C 0mm 84% 0cm 23° 7.2°C 0.25mm 0.16kPa 22112m 1.4m/s 0.96m/s
09:00
31% 5.8°C 0mm 75% 0cm 31° 9.9°C 0.5mm 0.3kPa 20089m 2.1m/s 1.4m/s
10:00
32% 6.5°C 0mm 66% 0cm 39° 13°C 0.75mm 0.49kPa 18065m 2.9m/s 1.9m/s
11:00
31% 7.2°C 0.06mm 71% 0cm 46° 12°C 1.3mm 0.42kPa 16239m 3.2m/s 1.8m/s
12:00
31% 7.8°C 0.13mm 75% 0cm 51° 12°C 1.8mm 0.35kPa 14413m 3.6m/s 1.7m/s
13:00
30% 8.4°C 0.19mm 80% 0cm 53° 12°C 2.3mm 0.28kPa 12587m 3.9m/s 1.6m/s
14:00
30% 7.5°C 0.13mm 84% 0cm 52° 10°C 1.7mm 0.19kPa 16437m 3.1m/s 1.6m/s
15:00
31% 6.5°C 0.07mm 89% 0cm 48° 8.2°C 1mm 0.12kPa 20286m 2.3m/s 1.5m/s
16:00
31% 5.4°C 0.01mm 93% 0cm 42° 6.4°C 0.38mm 0.06kPa 24135m 1.6m/s 1.5m/s
17:00
30% 5.1°C 0.007mm 93% 0cm 35° 6.1°C 0.38mm 0.06kPa 24135m 1.6m/s 1.6m/s
18:00
28% 4.7°C 0.003mm 93% 0cm 26° 5.7°C 0.38mm 0.06kPa 24135m 1.7m/s 1.7m/s
19:00
27% 4.3°C 0mm 93% 0cm 18° 5.4°C 0.38mm 0.06kPa 24135m 1.8m/s 1.8m/s
20:00
28% 4.5°C 0mm 94% 0cm 10° 5.4°C 0.25mm 0.06kPa 24135m 2.8m/s 2m/s
21:00
29% 4.7°C 0mm 94% 0cm 2.8° 5.5°C 0.13mm 0.05kPa 24135m 3.8m/s 2.1m/s
22:00 ☾
30% 4.9°C 0mm 95% 0cm -3.8° 5.6°C 0mm 0.04kPa 24135m 4.8m/s 2.3m/s
23:00 ☾
24% 5.2°C 0.08mm 95% 0cm -9° 5.9°C 0.08mm 0.04kPa 23829m 5.2m/s 2.4m/s
Tue, May 19 Sunrise 04:57 Sunset 21:30
24:00 ☾
18% 5.6°C 0.15mm 95% 0cm -12° 6.3°C 0.17mm 0.05kPa 23523m 5.6m/s 2.6m/s
01:00 ☾
12% 5.9°C 0.23mm 95% 0cm -14° 6.6°C 0.25mm 0.05kPa 23217m 6m/s 2.7m/s
02:00 ☾
9% 6.4°C 0.16mm 96% 0cm -13° 7°C 0.4mm 0.04kPa 23523m 6.2m/s 2.8m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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