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Rule Fog Hunter

Chipping Campden - Fog Hunter - Cotswolds

Chipping Campden, 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 · ≥ 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 Spread7.1°C
Visibility11933 (Clear)
Relative Humidity62%
Wind Speed5.6m/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 morning mist and fog conditions that transform the Cotswolds' gentle landscapes into atmospheric scenes worthy of a Constable painting. We monitor temperature inversions, humidity levels, and overnight cooling to predict when valley fog will blanket the honey-stone villages and rolling hills.

The Cotswolds' distinctive topography of shallow river valleys creates perfect conditions for radiation fog and valley mist. Cold air pools in valleys overnight, and when combined with moisture from the River Windrush and its tributaries, creates dreamy morning conditions that soften the already pastoral landscape.

What makes Cotswolds fog photography special:

  • Slad Valley inversions - Laurie Lee's famous valley fills with morning mist, with hilltop villages emerging as islands above the fog layer
  • Arlington Row mist - Bibury's iconic weavers' cottages partially obscured by dawn fog, with honey-stone glowing through the haze
  • Valley villages - Bourton-on-the-Water and Lower Slaughter with fog settled along their streams, stone bridges emerging from mist
  • Church tower beacons - Stow-on-the-Wold and Painswick church towers rising above fog blankets, marking village locations

The best fog photography occurs on calm, clear autumn and winter mornings (September-March) following cold nights. Slad Valley—immortalized in Laurie Lee's "Cider with Rosie"—is particularly reliable for valley fog, with viewpoints along the valley rim offering elevated perspectives. Arlington Row benefits from mist rising from the River Coln, creating dreamy morning compositions of England's most photographed street. Arrive before dawn to capture the transition from pre-dawn blue light through foggy golden hour. Fog typically burns off by mid-morning, creating a narrow window of opportunity.

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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 17
06:0055%
07:0055%
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
24:0030%
01:0030%
02:0055%
03:0071%
04:0044%
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%
21:0038%
22:0033%
23:0033%
Tue, May 19
24:0035%
01:0018%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:0032%
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 20
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 17 Sunrise 05:10 Sunset 20:57
14:00
0% 5.5°C 0mm 62% 0cm 56° 13°C 0.13mm 0.55kPa 11933m 6.8m/s 5.6m/s
15:00
0% 6.6°C 0mm 70% 0cm 50° 12°C 0.63mm 0.42kPa 13254m 7.6m/s 6.2m/s
16:00
0% 7.5°C 0.18mm 82% 0cm 43° 10°C 1.3mm 0.22kPa 15610m 8.1m/s 5.8m/s
17:00
0% 7.2°C 0mm 81% 0cm 34° 10°C 1.4mm 0.23kPa 19699m 6.6m/s 3.6m/s
18:00
0% 7.9°C 0mm 82% 0cm 25° 11°C 1.8mm 0.23kPa 15165m 6.9m/s 4.5m/s
19:00
0% 7.1°C 0mm 85% 0cm 16° 9.5°C 2.2mm 0.18kPa 15991m 8.4m/s 4.8m/s
20:00
0% 6.3°C 0mm 88% 0cm 7.1° 8.2°C 0.38mm 0.13kPa 20429m 9m/s 5m/s
21:00
0% 6.1°C 0.02mm 92% 0cm -0.81° 7.3°C 0.5mm 0.08kPa 24135m 8.9m/s 4.4m/s
22:00
0% 6.1°C 0.01mm 94% 0cm -8° 7.1°C 0.56mm 0.07kPa 24135m 7.7m/s 3.6m/s
23:00
0% 6°C 0mm 94% 0cm -14° 6.8°C 0.56mm 0.05kPa 24135m 7.7m/s 3.1m/s
Mon, May 18 Sunrise 05:10 Sunset 20:57
24:00
0% 5.9°C 0mm 95% 0cm -17° 6.6°C 0.63mm 0.05kPa 24134m 7m/s 3.1m/s
01:00
0% 4.1°C 0mm 96% 0cm -18° 4.7°C 0.63mm 0.03kPa 24135m 4.3m/s 2.9m/s
02:00
5% 3.7°C 0mm 97% 0cm -17° 4.2°C 0mm 0.03kPa 24134m 5.8m/s 3.2m/s
03:00
9% 3.9°C 0.01mm 98% 0cm -14° 4.3°C 0mm 0.02kPa 24135m 6.8m/s 3.3m/s
04:00
14% 4.5°C 0.95mm 98% 0cm -8.7° 4.8°C 0.38mm 0.01kPa 11231m 7.2m/s 3.4m/s
05:00
14% 6.3°C 1.9mm 98% 0cm -1.8° 6.6°C 2.3mm 0.02kPa 6203m 7.1m/s 3.8m/s
06:00
14% 5.7°C 0.12mm 97% 0cm 6.2° 6.2°C 3.4mm 0.03kPa 23928m 5.4m/s 2.5m/s
07:00
14% 5.9°C 0mm 95% 0cm 15° 6.7°C 3.4mm 0.05kPa 24135m 5.1m/s 2.7m/s
08:00
16% 6.3°C 0mm 90% 0cm 24° 7.9°C 0mm 0.11kPa 24134m 4.2m/s 3.3m/s
09:00
17% 6.7°C 0mm 84% 0cm 33° 9.2°C 0.06mm 0.18kPa 18619m 3.6m/s 2.9m/s
10:00
19% 7.2°C 0mm 83% 0cm 42° 10°C 0.5mm 0.21kPa 10459m 4.3m/s 3.5m/s
11:00
16% 7.2°C 0mm 84% 0cm 50° 9.9°C 1.2mm 0.2kPa 13404m 5m/s 4m/s
12:00
13% 7°C 0mm 79% 0cm 55° 10°C 1.4mm 0.26kPa 24134m 5.1m/s 3.9m/s
13:00
10% 6.8°C 0mm 74% 0cm 58° 11°C 1.5mm 0.35kPa 24134m 4.9m/s 3.8m/s
14:00
13% 7.1°C 0mm 73% 0cm 56° 12°C 0.31mm 0.37kPa 18291m 4.9m/s 4m/s
15:00
16% 7.5°C 0.01mm 72% 0cm 50° 12°C 0.75mm 0.41kPa 24134m 4.6m/s 3.7m/s
16:00
19% 7.7°C 0mm 72% 0cm 43° 13°C 1.1mm 0.4kPa 12825m 5m/s 4.1m/s
17:00
23% 7.5°C 0mm 72% 0cm 34° 12°C 1.3mm 0.41kPa 21201m 5.3m/s 4.1m/s
18:00
23% 7.6°C 0mm 72% 0cm 25° 12°C 1.4mm 0.4kPa 24017m 5.3m/s 4m/s
19:00
23% 8.1°C 0mm 80% 0cm 16° 12°C 1.6mm 0.28kPa 24135m 6.6m/s 4m/s
20:00
20% 8°C 0mm 87% 0cm 7.3° 10°C 0.06mm 0.15kPa 24135m 7.2m/s 3.5m/s
21:00
17% 7.5°C 0mm 95% 0cm -0.55° 8.3°C 0.06mm 0.06kPa 24135m 8.3m/s 3.5m/s
22:00
14% 7.5°C 0mm 97% 0cm -7.8° 8°C 0.06mm 0.04kPa 24135m 10m/s 4.2m/s
23:00
11% 7.5°C 0mm 97% 0cm -13° 8°C 0.06mm 0.04kPa 24135m 10m/s 4.5m/s
Tue, May 19 Sunrise 05:09 Sunset 20:59
24:00
8% 7.2°C 0mm 97% 0cm -17° 7.7°C 0.06mm 0.03kPa 24135m 10m/s 3.9m/s
01:00
5% 7.4°C 0.59mm 97% 0cm -18° 7.9°C 0.19mm 0.03kPa 13863m 10m/s 3.9m/s
02:00
3% 8°C 1.5mm 98% 0cm -17° 8.3°C 1.1mm 0.02kPa 4128m 9.7m/s 3.4m/s
03:00
2% 8.5°C 0.1mm 98% 0cm -14° 8.8°C 1.7mm 0.02kPa 1266m 11m/s 5.5m/s
04:00
0% 9°C 1.1mm 98% 0cm -8.5° 9.3°C 2.1mm 0.02kPa 930m 12m/s 5.6m/s
05:00
0% 9.2°C 1.9mm 98% 0cm -1.6° 9.5°C 3.6mm 0.02kPa 654m 13m/s 6.1m/s
06:00
0% 9.6°C 0.54mm 98% 0cm 6.3° 9.9°C 5.2mm 0.02kPa 1253m 14m/s 6.9m/s
07:00
0% 10°C 0.04mm 98% 0cm 15° 10°C 5.4mm 0.02kPa 8954m 12m/s 6.6m/s
08:00
0% 11°C 0.04mm 98% 0cm 24° 11°C 0.25mm 0.03kPa 1203m 11m/s 4.9m/s
09:00
0% 11°C 0mm 93% 0cm 33° 12°C 0.38mm 0.1kPa 24134m 9.9m/s 5.4m/s
10:00
0% 12°C 0mm 86% 0cm 42° 14°C 0.44mm 0.22kPa 24134m 10m/s 7.2m/s
11:00
0% 12°C 0mm 85% 0cm 50° 14°C 0.75mm 0.25kPa 11148m 11m/s 8.2m/s
12:00
0% 11°C 0mm 90% 0cm 55° 13°C 0.88mm 0.15kPa 24134m 12m/s 7m/s
13:00
0% 11°C 0mm 77% 0cm 58° 15°C 0.88mm 0.4kPa 19073m 11m/s 8.3m/s
14:00
0% 11°C 0mm 77% 0cm 56° 15°C 0.25mm 0.4kPa 24134m 12m/s 9m/s
15:00
0% 11°C 0mm 75% 0cm 51° 16°C 0.38mm 0.44kPa 14463m 13m/s 9.5m/s
16:00
0% 12°C 0mm 82% 0cm 43° 15°C 0.69mm 0.3kPa 21862m 13m/s 8.7m/s
17:00
1% 11°C 0mm 80% 0cm 34° 14°C 0.81mm 0.32kPa 24135m 13m/s 9m/s
18:00
1% 10°C 0mm 76% 0cm 25° 14°C 0.81mm 0.39kPa 24135m 13m/s 8.6m/s
19:00
2% 9.5°C 0mm 79% 0cm 16° 13°C 0.81mm 0.32kPa 24135m 13m/s 8.3m/s
20:00
12% 10°C 0mm 83% 0cm 7.4° 13°C 0.56mm 0.26kPa 24135m 14m/s 8.3m/s
21:00
21% 11°C 0mm 87% 0cm -0.28° 13°C 0.31mm 0.2kPa 24135m 14m/s 8.2m/s
22:00
31% 11°C 0mm 90% 0cm -7.6° 13°C 0.06mm 0.14kPa 24135m 14m/s 8.1m/s
23:00
30% 11°C 0mm 89% 0cm -13° 12°C 0.08mm 0.15kPa 24135m 14m/s 7.9m/s
Wed, May 20 Sunrise 05:07 Sunset 21:00
24:00
30% 11°C 0mm 88% 0cm -17° 12°C 0.1mm 0.17kPa 24135m 14m/s 7.7m/s
01:00
29% 10°C 0mm 87% 0cm -18° 12°C 0.13mm 0.18kPa 24135m 13m/s 7.4m/s
02:00
23% 11°C 0.01mm 85% 0cm -17° 13°C 0.08mm 0.23kPa 24135m 13m/s 7.8m/s
03:00
17% 11°C 0.03mm 82% 0cm -14° 14°C 0.04mm 0.29kPa 24135m 12m/s 8.2m/s
04:00
11% 11°C 0.04mm 80% 0cm -8.4° 15°C 0mm 0.35kPa 24135m 12m/s 8.5m/s
05:00
9% 12°C 0.03mm 77% 0cm -1.4° 16°C 0.04mm 0.41kPa 24135m 12m/s 8.6m/s
06:00
7% 12°C 0.01mm 74% 0cm 6.5° 16°C 0.08mm 0.48kPa 24135m 13m/s 8.7m/s
07:00
5% 12°C 0mm 72% 0cm 15° 17°C 0.13mm 0.55kPa 24135m 13m/s 8.8m/s
08:00
4% 12°C 0mm 72% 0cm 24° 17°C 0.13mm 0.55kPa 24135m 13m/s 8.5m/s
09:00
2% 13°C 0mm 73% 0cm 33° 17°C 0.13mm 0.55kPa 24135m 13m/s 8.2m/s
10:00
1% 13°C 0mm 73% 0cm 42° 18°C 0.13mm 0.54kPa 24135m 14m/s 7.9m/s
11:00
1% 12°C 0mm 75% 0cm 50° 17°C 0.13mm 0.49kPa 24135m 13m/s 7.2m/s
12:00
0% 12°C 0mm 76% 0cm 56° 16°C 0.13mm 0.44kPa 24135m 13m/s 6.4m/s
13:00
0% 12°C 0mm 78% 0cm 58° 16°C 0.13mm 0.39kPa 24135m 12m/s 5.7m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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