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Rule Fog Hunter

London - Fog Hunter - London & Southeast England

London, England, 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 · ≥ 85.0% Dewpoint Spread · ≤ 2.0°C Visibility · ≤ 3000.0m Wind Speed · ≤ 2.0m/s

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
Visibility 100% failing
Wind Speed 100% failing

Currently

Real-time conditions
Dewpoint Spread4.3°C
Visibility24135 (Clear)
Relative Humidity74%
Wind Speed5.9m/s (moderate winds)

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 tracks the Thames Valley fog and coastal mist that create atmospheric conditions across London and Southeast England. We combine humidity, temperature, and local topography to predict when fog will transform familiar locations into moody, cinematic scenes.

London's relationship with fog is legendary—the Victorian "pea soupers" may be gone, but Thames fog still creates magical photography conditions. The river acts as a fog generator, with mist rolling across the city at dawn. Meanwhile, the North and South Downs create valley fog conditions in rural Kent, Sussex, and Surrey.

What makes Southeast England fog photography exceptional:

  • Thames fog - River mist at dawn creates moody silhouettes of Tower Bridge, St Paul's, and the Shard
  • North Downs mist - Rolling chalk hills develop valley fog that creates layered landscapes
  • South Downs valleys - Morning mist in river valleys with the Seven Sisters and Beachy Head emerging above
  • Autumn intensity - September through November brings the most reliable fog conditions as land cools

Best conditions occur at dawn along the Thames between September and November. Elevated viewpoints like Greenwich Park or Primrose Hill offer views across fog-shrouded London. In the countryside, Box Hill and Devil's Dyke provide classic chalk downland fog compositions.

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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
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Sun, Feb 22
02:000%1.8°C24134m5.8m/s
03:000%1.3°C24135m5.6m/s
04:000%1.1°C24134m5.7m/s
05:000%1.1°C8117m6.4m/s
06:000%1.2°C24134m6.3m/s
07:000%1°C14276m5.8m/s
08:000%1.3°C16000m6.3m/s
09:000%1.5°C24135m5.6m/s
10:000%1.4°C24135m5.3m/s
11:000%1.6°C24019m5.6m/s
12:000%3.4°C24134m5.5m/s
13:000%4.3°C14684m5.4m/s
14:000%5.1°C24135m5.2m/s
15:000%5.7°C24135m5.3m/s
16:000%5.5°C24135m5.5m/s
17:000%5°C24135m5.7m/s
18:000%4°C24135m4.6m/s
19:000%2.5°C24135m4.5m/s
20:000%2.3°C24135m5.2m/s
21:000%2.8°C24134m5.5m/s
22:000%3.2°C24134m6m/s
23:000%3°C24135m5.8m/s
Mon, Feb 23
24:000%4.1°C24134m6.2m/s
01:000%5.5°C24134m6.9m/s
02:000%4.3°C24135m5.9m/s
03:000%4.3°C24134m6.1m/s
04:000%3.9°C24134m6.2m/s
05:000%4°C24134m5.6m/s
06:000%3.5°C24135m5.6m/s
07:000%3.1°C24134m5.3m/s
08:000%3.3°C24135m5.7m/s
09:000%3.6°C24135m5.9m/s
10:000%4.1°C24135m5.6m/s
11:000%4.2°C24135m5.4m/s
12:000%4.9°C24135m5.2m/s
13:000%4.9°C24134m5.2m/s
14:000%4.2°C24135m5.4m/s
15:000%3.7°C21721m4.7m/s
16:000%2.8°C17754m3.4m/s
17:000%1.6°C16114m2.4m/s
18:000%0.8°C22240m3.3m/s
19:0019%0.8°C21554m4.6m/s
20:000%0.8°C24134m4.9m/s
21:000%1.3°C24134m5m/s
22:000%1.2°C24135m4.7m/s
23:000%1.2°C24135m4.4m/s
Tue, Feb 24
24:000%1.4°C24134m4.1m/s
01:000%1.2°C24135m3.6m/s
02:000%1.1°C24134m3.5m/s
03:000%0.9°C24134m3.6m/s
04:0051%0.8°C24135m3.8m/s
05:0057%0.4°C22043m3.9m/s
06:000%1.7°C24135m5m/s
07:000%2.3°C24135m5.1m/s
08:000%2.5°C24135m4.3m/s
09:000%2.3°C24135m4.2m/s
10:000%3.5°C24134m4.4m/s
11:000%5.2°C24135m4.8m/s
12:000%6.6°C24135m5m/s
13:000%7.6°C24135m5.1m/s
14:000%7.5°C24135m5.2m/s
15:000%6.3°C24134m4.8m/s
16:000%4.5°C24134m4.3m/s
17:000%3.2°C24134m3.8m/s
18:000%2.5°C24134m3.6m/s
19:000%2.4°C24135m3.4m/s
20:000%2.2°C24135m2.7m/s
21:000%1.8°C24134m2.5m/s
22:000%1.5°C24134m2.5m/s
23:000%1.3°C24135m2.9m/s
Wed, Feb 25
24:000%1.4°C24134m3m/s
01:000%1.4°C24135m2.9m/s
02:000%1.5°C24135m2.6m/s
03:000%1.3°C24134m2.3m/s
04:000%1.1°C24135m2.3m/s
05:0051%1°C24134m2.3m/s
06:0051%0.8°C24135m2.1m/s
07:000%2.4°C24135m2.6m/s
08:000%4.3°C24135m3m/s
09:000%6.4°C24135m3.5m/s
10:000%5.1°C24135m3.3m/s
11:000%3.9°C24135m3.2m/s
12:000%2.8°C24135m3m/s
13:000%2.6°C24135m2.9m/s
14:000%2.4°C24135m2.7m/s
15:000%2.4°C24135m2.6m/s
16:000%2.1°C24135m2.7m/s
17:000%1.9°C24135m2.8m/s
18:000%1.7°C24135m2.9m/s
19:000%1.5°C24135m3.6m/s
20:000%1.4°C24135m4.3m/s
21:000%1.3°C24135m5m/s
22:000%2.1°C24135m5.7m/s
23:000%2.9°C24135m6.3m/s
Thu, Feb 26
24:000%3.8°C24135m6.9m/s
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
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Mon, Feb 23 Sunrise 06:58 Sunset 17:29
02:00
5.2°C 0mm 74% 0cm 9.5°C 0mm 0.31kPa 13m/s
03:00
4.9°C 0mm 74% 0cm 9.2°C 0mm 0.3kPa 13m/s
04:00
5.3°C 0mm 77% 0cm 9.2°C 0mm 0.27kPa 13m/s
05:00
5°C 0mm 76% 0cm 9°C 0mm 0.27kPa 13m/s
06:00
5°C 0mm 79% 0cm 8.5°C 0mm 0.23kPa 14m/s
07:00
5.2°C 0mm 81% 0cm 8.3°C 0mm 0.21kPa 13m/s
08:00
5.2°C 0mm 80% 0cm 8.5°C 0mm 0.22kPa 14m/s
09:00
5.5°C 0mm 78% 0cm 9.1°C 0mm 0.25kPa 14m/s
10:00
5.8°C 0mm 76% 0cm 9.9°C 0mm 0.3kPa 13m/s
11:00
6.2°C 0mm 75% 0cm 10°C 0mm 0.32kPa 12m/s
12:00
6.3°C 0mm 72% 0cm 11°C 0mm 0.37kPa 13m/s
13:00
6.8°C 0.02mm 72% 0cm 12°C 0mm 0.38kPa 13m/s
14:00
7.2°C 0.1mm 76% 0cm 11°C 0.13mm 0.32kPa 11m/s
15:00
7.1°C 0.34mm 78% 0cm 11°C 0.19mm 0.29kPa 11m/s
16:00
7.5°C 0.32mm 83% 0cm 10°C 0.63mm 0.21kPa 9.6m/s
17:00
8.3°C 0.32mm 90% 0cm 9.9°C 1.1mm 0.12kPa 11m/s
18:00
9.6°C 0.27mm 94% 0cm 10°C 1.3mm 0.07kPa 12m/s
19:00
11°C 0.66mm 95% 0cm 11°C 0.88mm 0.06kPa 14m/s
20:00
11°C 0mm 94% 0cm 12°C 1.8mm 0.08kPa 13m/s
21:00
11°C 0mm 92% 0cm 12°C 1.8mm 0.11kPa 13m/s
22:00
11°C 0mm 92% 0cm 12°C 1.8mm 0.11kPa 13m/s
23:00
11°C 0mm 92% 0cm 12°C 1.8mm 0.11kPa 13m/s
Tue, Feb 24 Sunrise 06:56 Sunset 17:31
24:00
10°C 0mm 92% 0cm 12°C 1.8mm 0.12kPa 12m/s
01:00
10°C 0mm 92% 0cm 12°C 0mm 0.11kPa 11m/s
02:00
10°C 0mm 93% 0cm 11°C 0mm 0.09kPa 11m/s
03:00
9.5°C 0mm 95% 0cm 10°C 0mm 0.07kPa 11m/s
04:00
9.1°C 0mm 95% 0cm 9.9°C 0mm 0.06kPa 12m/s
05:00
9°C 0mm 97% 0cm 9.4°C 0mm 0.03kPa 13m/s
06:00
8.9°C 0mm 90% 0cm 11°C 0mm 0.13kPa 12m/s
07:00
8.8°C 0mm 86% 0cm 11°C 0mm 0.18kPa 12m/s
08:00
8.7°C 0mm 85% 0cm 11°C 0mm 0.2kPa 12m/s
09:00
8.8°C 0mm 86% 0cm 11°C 0mm 0.18kPa 12m/s
10:00
8.7°C 0mm 79% 0cm 12°C 0mm 0.29kPa 12m/s
11:00
8.2°C 0mm 71% 0cm 13°C 0mm 0.44kPa 10m/s
12:00
7.7°C 0mm 64% 0cm 14°C 0mm 0.58kPa 8.9m/s
13:00
7.2°C 0mm 61% 0cm 15°C 0mm 0.66kPa 8.6m/s
14:00
7.3°C 0mm 61% 0cm 15°C 0mm 0.66kPa 8.8m/s
15:00
8.1°C 0mm 66% 0cm 14°C 0mm 0.56kPa 9.8m/s
16:00
8.9°C 0mm 75% 0cm 13°C 0mm 0.39kPa 11m/s
17:00
9.4°C 0mm 81% 0cm 13°C 0mm 0.28kPa 11m/s
18:00
9.5°C 0mm 85% 0cm 12°C 0mm 0.21kPa 11m/s
19:00
9.4°C 0mm 86% 0cm 12°C 0mm 0.2kPa 11m/s
20:00
9.4°C 0mm 87% 0cm 12°C 0mm 0.18kPa 11m/s
21:00
9.4°C 0mm 89% 0cm 11°C 0mm 0.15kPa 9.3m/s
22:00
9.6°C 0mm 91% 0cm 11°C 0mm 0.12kPa 11m/s
23:00
9.6°C 0mm 92% 0cm 11°C 0mm 0.11kPa 11m/s
Wed, Feb 25 Sunrise 06:54 Sunset 17:33
24:00
9.6°C 0mm 92% 0cm 11°C 0mm 0.11kPa 11m/s
01:00
9.3°C 0mm 91% 0cm 11°C 0mm 0.11kPa 10m/s
02:00
8.9°C 0mm 91% 0cm 10°C 0mm 0.12kPa 10m/s
03:00
8.7°C 0mm 92% 0cm 10°C 0mm 0.1kPa 8.2m/s
04:00
8.4°C 0mm 93% 0cm 9.5°C 0mm 0.09kPa 7.5m/s
05:00
8.4°C 0mm 94% 0cm 9.4°C 0mm 0.08kPa 8.4m/s
06:00
8.3°C 0mm 95% 0cm 9.1°C 0mm 0.06kPa 7.4m/s
07:00
9°C 0mm 85% 0cm 11°C 0mm 0.2kPa 6.5m/s
08:00
9.4°C 0mm 75% 0cm 14°C 0mm 0.39kPa 5.6m/s
09:00
9.6°C 0mm 66% 0cm 16°C 0mm 0.62kPa 4.7m/s
10:00
9.7°C 0mm 71% 0cm 15°C 0mm 0.48kPa 5.4m/s
11:00
9.7°C 0mm 77% 0cm 14°C 0mm 0.35kPa 6m/s
12:00
9.6°C 0mm 83% 0cm 12°C 0mm 0.24kPa 6.6m/s
13:00
9.2°C 0mm 84% 0cm 12°C 0mm 0.22kPa 7m/s
14:00
8.8°C 0mm 85% 0cm 11°C 0mm 0.2kPa 7.4m/s
15:00
8.3°C 0mm 86% 0cm 11°C 0mm 0.18kPa 7.8m/s
16:00
8.2°C 0mm 87% 0cm 10°C 0mm 0.16kPa 8.8m/s
17:00
8.1°C 0mm 88% 0cm 10°C 0mm 0.14kPa 9.8m/s
18:00
8°C 0mm 90% 0cm 9.7°C 0mm 0.13kPa 11m/s
19:00
8.1°C 0mm 90% 0cm 9.6°C 0mm 0.12kPa 11m/s
20:00
8.2°C 0mm 91% 0cm 9.6°C 0mm 0.11kPa 12m/s
21:00
8.3°C 0mm 91% 0cm 9.6°C 0mm 0.1kPa 13m/s
22:00
7.9°C 0.01mm 87% 0cm 10°C 0.04mm 0.16kPa 13m/s
23:00
7.4°C 0.03mm 82% 0cm 10°C 0.08mm 0.22kPa 14m/s
Thu, Feb 26 Sunrise 06:52 Sunset 17:35
24:00
6.9°C 0.04mm 78% 0cm 11°C 0.13mm 0.29kPa 14m/s
01:00
7.3°C 0.03mm 79% 0cm 11°C 0.1mm 0.27kPa 13m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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