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Rule Fog Hunter

Fog Hunter Forecast for Zermatt, Alps

Zermatt, Valais, Switzerland

Zermatt provides Matterhorn views above larch forest, village rooftops and mountain lakes, with winter snow simplifying slopes into graphic tonal layers.

Currently

Real-time conditions
Fog Probability
65%
Dewpoint Spread0.4°C
Visibility262 (Fog)
Relative Humidity98%
Wind Speed1.3m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich
fog weather icon
Next opportunity
Dense Fog
Zermatt
Today · 15:00–19:00 · 4h window
High confidence
93%
🌫️Fog Probability91.4-94.3%
Dewpoint Spread: 0.4°C
Visibility: 255 (Fog)
Relative Humidity: 97%
Wind Speed: 3.4m/s (calm conditions)
fog weather icon
Dense Fog
Zermatt
Today · 22:00–24:00
🌫️Fog Probability:83.4%
High

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fog Hunter conditions across Alps. The requirements and hourly values below show how those signals apply at Zermatt.

Explore Fog Hunter conditions across Alps →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Zermatt during the last 365 days.

Last 30 days
1
recorded matching window · 85% average confidence
Last 90 days
30
recorded matching windows · 75% average confidence
Last 365 days
30
recorded matching windows · 75% average confidence
Most frequent recorded start hour

03:00 local time, shared by 7 of 30 matches recorded in the last 365 days.

Most represented month

May, with 19 of 30 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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92-hour requirements breakdown

When available, the detailed table below covers only the stated 92-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour
6matching hours in the next 92 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Zurich
Fog Probability
≥ 75.0%
Sat, Jul 25
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%
Sun, Jul 26
24:000%
01:000%
02:000%
03:0063%
04:0065%
05:0060%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:0094%
16:0094%
17:0091%
18:0091%
19:000%
20:000%
21:0047%
22:0083%
23:0083%
Mon, Jul 27
24:0047%
01:000%
02:0038%
03:0047%
04:0054%
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%
Tue, Jul 28
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%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Jul 29
24:000%
01:000%
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/Zurich
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, Jul 26 Sunrise 06:04 Sunset 21:05
04:00 ☾
0% 4.5°C 0.09mm 98% 0cm -17° 4.9°C 0.63mm 0.02kPa 262m 1.3m/s 1.3m/s
05:00 ☾
0% 4.6°C 0.05mm 98% 0cm -9.8° 5°C 0.94mm 0.02kPa 1004m 1.2m/s 1.3m/s
06:00 ☾
0% 4.8°C 0.66mm 98% 0cm -1.3° 5.2°C 1.6mm 0.02kPa 629m 0.71m/s 0.5m/s
07:00
0% 5°C 2.6mm 99% 0cm 8° 5.2°C 3.4mm 0.01kPa 152m 1m/s 0.54m/s
08:00
0% 4°C 4.9mm 99% 0cm 18° 4.1°C 8.2mm 0.01kPa 147m 0.72m/s 0.14m/s
09:00
0% 2.7°C 4.6mm 99% 0cm 28° 2.8°C 6.1mm 0.01kPa 149m 1.6m/s 1.4m/s
10:00
0% 2.7°C 3.4mm 98% 0cm 39° 3.1°C 11mm 0.02kPa 232m 2.5m/s 2.2m/s
11:00
0% 3°C 1.7mm 97% 0cm 48° 3.4°C 14mm 0.02kPa 1501m 2.6m/s 2.4m/s
12:00
0% 3.4°C 0.54mm 98% 0cm 57° 3.7°C 15mm 0.02kPa 932m 2.6m/s 2.4m/s
13:00
0% 3.6°C 0.14mm 97% 0cm 62° 4°C 16mm 0.02kPa 4209m 2.8m/s 2.5m/s
14:00
0% 4°C 0.01mm 98% 0cm 63° 4.3°C 16mm 0.02kPa 216m 2.8m/s 2.8m/s
15:00
0% 4.1°C 0.03mm 97% 0cm 58° 4.5°C 0mm 0.02kPa 255m 3.3m/s 3.4m/s
16:00
0% 4.2°C 0.01mm 97% 0cm 50° 4.6°C 0.06mm 0.02kPa 152m 3m/s 3.1m/s
17:00
0% 4.2°C 0mm 97% 0cm 41° 4.7°C 0.06mm 0.03kPa 189m 3.2m/s 3.3m/s
18:00
0% 4.2°C 0mm 96% 0cm 30° 4.9°C 0.13mm 0.04kPa 231m 2.9m/s 3.1m/s
19:00
0% 3.9°C 0mm 92% 0cm 20° 5.1°C 0.13mm 0.07kPa 24135m 3.4m/s 3.5m/s
20:00
0% 3.9°C 0mm 91% 0cm 9.8° 5.2°C 0.13mm 0.08kPa 24134m 3.7m/s 3.7m/s
21:00
0% 3.3°C 0mm 96% 0cm 0.57° 3.9°C 0mm 0.03kPa 3200m 3.8m/s 3.8m/s
22:00 ☾
1% 2.9°C 0mm 98% 0cm -8.5° 3.2°C 0mm 0.01kPa 183m 3.7m/s 3.9m/s
23:00 ☾
1% 2.9°C 0mm 98% 0cm -16° 3.2°C 0mm 0.01kPa 183m 3.8m/s 3.9m/s
Mon, Jul 27 Sunrise 06:04 Sunset 21:05
24:00 ☾
1% 3.1°C 0mm 96% 0cm -21° 3.6°C 0mm 0.03kPa 3402m 3.8m/s 4m/s
01:00 ☾
0% 2.6°C 0mm 94% 0cm -24° 3.4°C 0mm 0.05kPa 6499m 3.5m/s 3.7m/s
02:00 ☾
0% 2°C 0mm 95% 0cm -24° 2.7°C 0mm 0.04kPa 24134m 3.4m/s 3.5m/s
03:00 ☾
1% 0.7°C 0mm 96% 0cm -22° 1.3°C 0mm 0.03kPa 3377m 3.1m/s 3.6m/s
04:00 ☾
2% 0.4°C 0mm 95% 0cm -17° 1.1°C 0mm 0.03kPa 2883m 3.3m/s 3.6m/s
05:00 ☾
3% -0.2°C 0mm 93% 0cm -10° 0.77°C 0mm 0.05kPa 2967m 3.5m/s 3.9m/s
06:00 ☾
4% -0.6°C 0mm 91% 0cm -1.4° 0.67°C 0mm 0.06kPa 3064m 3.5m/s 3.9m/s
07:00
5% 0.1°C 0mm 92% 0cm 7.9° 1.3°C 0mm 0.05kPa 3485m 3.4m/s 3.6m/s
08:00
6% 1.2°C 0mm 86% 0cm 18° 3.3°C 0mm 0.11kPa 24134m 3.3m/s 3.4m/s
09:00
23% 2°C 0mm 77% 0cm 28° 5.7°C 0mm 0.21kPa 24135m 3.2m/s 3.3m/s
10:00
41% 2.2°C 0mm 70% 0cm 39° 7.3°C 0mm 0.3kPa 24135m 3m/s 3.1m/s
11:00
58% 2°C 0mm 63% 0cm 48° 8.6°C 0mm 0.41kPa 24135m 2.3m/s 2.6m/s
12:00
69% 1.6°C 0mm 56% 0cm 57° 9.9°C 0mm 0.54kPa 24134m 2.1m/s 2.3m/s
13:00
79% 1.6°C 0mm 52% 0cm 62° 11°C 0mm 0.64kPa 24135m 2.1m/s 2.2m/s
14:00
90% 1.9°C 0mm 50% 0cm 63° 12°C 0mm 0.71kPa 24134m 2.3m/s 2.4m/s
15:00
93% 2.4°C 0mm 50% 0cm 58° 13°C 0mm 0.73kPa 24135m 2.3m/s 2.6m/s
16:00
97% 2.8°C 0mm 51% 0cm 50° 13°C 0mm 0.71kPa 24135m 2.4m/s 2.8m/s
17:00
100% 3.3°C 0mm 54% 0cm 40° 12°C 0mm 0.66kPa 24134m 2.4m/s 2.8m/s
18:00
100% 3.8°C 0mm 58% 0cm 30° 12°C 0mm 0.58kPa 24135m 2.3m/s 2.8m/s
19:00
99% 4.4°C 0mm 64% 0cm 20° 11°C 0mm 0.47kPa 24134m 2.4m/s 2.7m/s
20:00
99% 5.2°C 0mm 74% 0cm 9.6° 9.6°C 0mm 0.31kPa 24135m 2.8m/s 2.9m/s
21:00
92% 4.6°C 0mm 88% 0cm 0.42° 6.5°C 0mm 0.12kPa 24134m 2.5m/s 2.8m/s
22:00 ☾
84% 4.3°C 0mm 91% 0cm -8.7° 5.6°C 0mm 0.08kPa 24134m 2.4m/s 2.6m/s
23:00 ☾
77% 3.2°C 0mm 88% 0cm -16° 5°C 0mm 0.11kPa 24134m 1.9m/s 1.8m/s
Tue, Jul 28 Sunrise 06:05 Sunset 21:04
24:00 ☾
76% 1.7°C 0mm 79% 0cm -21° 5°C 0mm 0.18kPa 24135m 0.81m/s 0.45m/s
01:00 ☾
75% 1.4°C 0mm 76% 0cm -24° 5.2°C 0mm 0.21kPa 24135m 1.8m/s 1.8m/s
02:00 ☾
74% 1.5°C 0mm 78% 0cm -25° 4.9°C 0mm 0.19kPa 24135m 1.7m/s 1.7m/s
03:00 ☾
83% 1.6°C 0mm 78% 0cm -22° 5.1°C 0mm 0.19kPa 24134m 2.1m/s 2.2m/s
04:00 ☾
91% 1.5°C 0mm 78% 0cm -17° 4.9°C 0mm 0.19kPa 24134m 1.9m/s 2.1m/s
05:00 ☾
100% 1.2°C 0mm 78% 0cm -10° 4.8°C 0mm 0.19kPa 24135m 1.8m/s 1.8m/s
06:00 ☾
100% 0.8°C 0mm 75% 0cm -1.6° 4.8°C 0mm 0.21kPa 24134m 1.9m/s 2m/s
07:00
100% 1.7°C 0mm 72% 0cm 7.7° 6.3°C 0mm 0.27kPa 24135m 1.9m/s 2m/s
08:00
100% 3.6°C 0mm 67% 0cm 18° 9.5°C 0mm 0.4kPa 24134m 1.7m/s 1.8m/s
09:00
100% 4.8°C 0mm 61% 0cm 28° 12°C 0mm 0.54kPa 24134m 1.6m/s 1.8m/s
10:00
100% 5.9°C 0mm 56% 0cm 38° 15°C 0mm 0.73kPa 24135m 1.5m/s 1.7m/s
11:00
100% 6.8°C 0mm 51% 0cm 48° 17°C 0mm 0.96kPa 24135m 1.4m/s 1.6m/s
12:00
100% 7.9°C 0mm 59% 0cm 57° 16°C 0.02mm 0.76kPa 24135m 1.5m/s 1.7m/s
13:00
100% 8.8°C 0mm 66% 0cm 62° 15°C 0.04mm 0.57kPa 24135m 1.5m/s 1.8m/s
14:00
100% 9.4°C 0mm 74% 0cm 62° 14°C 0.06mm 0.41kPa 24135m 1.6m/s 1.8m/s
15:00
86% 9.2°C 0mm 81% 0cm 58° 12°C 0.06mm 0.28kPa 22226m 2m/s 2.2m/s
16:00
71% 8.9°C 0mm 87% 0cm 50° 11°C 0.06mm 0.17kPa 20317m 2.4m/s 2.6m/s
17:00
57% 8.4°C 0mm 94% 0cm 40° 9.4°C 0.06mm 0.08kPa 18409m 2.8m/s 2.9m/s
18:00
47% 7.9°C 0mm 92% 0cm 30° 9.1°C 0.06mm 0.09kPa 20317m 2.9m/s 3.1m/s
19:00
37% 7.4°C 0mm 90% 0cm 20° 8.9°C 0.06mm 0.11kPa 22226m 3m/s 3.2m/s
20:00
27% 6.8°C 0mm 89% 0cm 9.4° 8.6°C 0.06mm 0.12kPa 24135m 3.1m/s 3.3m/s
21:00
32% 6.7°C 0mm 89% 0cm 0.27° 8.4°C 0.04mm 0.12kPa 24135m 2.8m/s 3.1m/s
22:00 ☾
37% 6.6°C 0mm 90% 0cm -8.9° 8.2°C 0.02mm 0.11kPa 24135m 2.6m/s 2.9m/s
23:00 ☾
42% 6.4°C 0mm 90% 0cm -16° 8°C 0mm 0.11kPa 24135m 2.4m/s 2.6m/s
Wed, Jul 29 Sunrise 06:06 Sunset 21:03
24:00 ☾
40% 7°C 0.003mm 88% 0cm -22° 8.9°C 0mm 0.14kPa 24135m 2m/s 2.3m/s
01:00 ☾
39% 7.5°C 0.007mm 86% 0cm -25° 9.8°C 0mm 0.18kPa 24135m 1.7m/s 2m/s
02:00 ☾
37% 8°C 0.01mm 83% 0cm -25° 11°C 0mm 0.22kPa 24135m 1.3m/s 1.7m/s
03:00 ☾
37% 8.1°C 0.007mm 78% 0cm -22° 12°C 0.08mm 0.31kPa 18986m 1.4m/s 1.7m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →
Forecast generated

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