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Rule Fog Hunter

Fog Hunter Forecast for St. Moritz, Alps

Saint Moritz, Canton Grisons, Switzerland

St. Moritz overlooks the Engadin’s chain of lakes and larch-covered slopes, where frozen water and snowfields create broad minimalist winter compositions.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread5.4°C
Visibility24134 (Clear)
Relative Humidity69%
Wind Speed0.8m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (86-hour forecast)

  • Fog Probability100% of hours

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 St. Moritz.

Explore Fog Hunter conditions across Alps →

Recorded match history

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

Last 30 days
1
recorded matching window · 100% average confidence
Last 90 days
26
recorded matching windows · 74% average confidence
Last 365 days
35
recorded matching windows · 74% average confidence
Most frequent recorded start hour

03:00 local time, shared by 9 of 35 matches recorded in the last 365 days.

Most represented month

June, with 17 of 35 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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86-hour requirements breakdown

When available, the detailed table below covers only the stated 86-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
0matching hours in the next 86 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Zurich
Fog Probability
≥ 75.0%
Thu, Aug 13
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%
Fri, Aug 14
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%
Sat, Aug 15
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%
Sun, Aug 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%
19:000%
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
Thu, Aug 13 Sunrise 06:16 Sunset 20:33
22:00 ☾
92% 6.2°C 0mm 69% 0cm -14° 12°C 0.06mm 0.42kPa 24134m 0.83m/s 0.8m/s
23:00 ☾
100% 5.8°C 0mm 70% 0cm -21° 11°C 0.06mm 0.4kPa 24135m 0.71m/s 0.71m/s
Fri, Aug 14 Sunrise 06:16 Sunset 20:33
24:00 ☾
100% 5.6°C 0mm 70% 0cm -26° 11°C 0.06mm 0.38kPa 24134m 1m/s 0.94m/s
01:00 ☾
100% 5.8°C 0mm 73% 0cm -29° 10°C 0.06mm 0.34kPa 24135m 1m/s 0.99m/s
02:00 ☾
100% 6°C 0mm 75% 0cm -29° 10°C 0.06mm 0.31kPa 24135m 1.2m/s 1.1m/s
03:00 ☾
100% 6.1°C 0mm 78% 0cm -25° 9.7°C 0mm 0.26kPa 24134m 0.9m/s 0.76m/s
04:00 ☾
100% 5.9°C 0mm 80% 0cm -20° 9.2°C 0mm 0.23kPa 24135m 0.72m/s 0.36m/s
05:00 ☾
100% 5.7°C 0mm 80% 0cm -12° 8.9°C 0mm 0.22kPa 24134m 0.61m/s 0.3m/s
06:00 ☾
99% 5.7°C 0mm 81% 0cm -3.5° 8.8°C 0mm 0.22kPa 24135m 0.82m/s 0.49m/s
07:00
98% 6.4°C 0mm 78% 0cm 6.2° 10°C 0mm 0.27kPa 24134m 0.73m/s 0.42m/s
08:00
97% 6.9°C 0mm 67% 0cm 16° 13°C 0mm 0.49kPa 24134m 0.81m/s 0.35m/s
09:00
95% 6.8°C 0mm 61% 0cm 27° 14°C 0mm 0.64kPa 24135m 1.1m/s 0.91m/s
10:00
93% 6.2°C 0mm 54% 0cm 37° 16°C 0mm 0.82kPa 24134m 1.6m/s 1.5m/s
11:00
91% 4.6°C 0mm 44% 0cm 46° 17°C 0mm 1.1kPa 24135m 1.7m/s 1.8m/s
12:00
88% 3.6°C 0mm 39% 0cm 53° 18°C 0mm 1.2kPa 24135m 1.8m/s 2m/s
13:00
85% 3.1°C 0mm 36% 0cm 57° 18°C 0mm 1.3kPa 24135m 1.7m/s 2.2m/s
14:00
82% 2.8°C 0mm 35% 0cm 57° 19°C 0.06mm 1.4kPa 24134m 1.6m/s 2.2m/s
15:00
75% 2.7°C 0mm 34% 0cm 52° 19°C 0.13mm 1.5kPa 24134m 1.5m/s 2.5m/s
16:00
68% 2.8°C 0mm 34% 0cm 44° 19°C 0.25mm 1.5kPa 24134m 1.6m/s 2.6m/s
17:00
61% 2.7°C 0mm 34% 0cm 35° 19°C 0.31mm 1.4kPa 24135m 1.8m/s 2.5m/s
18:00
58% 3.4°C 0mm 37% 0cm 25° 18°C 0.38mm 1.3kPa 24135m 2m/s 2.3m/s
19:00
54% 5.5°C 0mm 45% 0cm 15° 17°C 0.5mm 1.1kPa 24135m 2.6m/s 2.1m/s
20:00
51% 6.7°C 0mm 59% 0cm 4.6° 15°C 0.69mm 0.69kPa 24135m 1.7m/s 1.5m/s
21:00 ☾
51% 5.4°C 0mm 64% 0cm -5.1° 12°C 0.06mm 0.5kPa 24135m 1m/s 0.9m/s
22:00 ☾
51% 5.4°C 0mm 67% 0cm -14° 11°C 0.13mm 0.44kPa 24135m 0.82m/s 0.88m/s
23:00 ☾
51% 5.3°C 0mm 69% 0cm -21° 11°C 0.19mm 0.4kPa 24135m 0.8m/s 0.82m/s
Sat, Aug 15 Sunrise 06:17 Sunset 20:31
24:00 ☾
53% 5.5°C 0.01mm 70% 0cm -26° 11°C 0.25mm 0.38kPa 24134m 1.2m/s 1.2m/s
01:00 ☾
56% 5.9°C 0mm 73% 0cm -29° 10°C 0.44mm 0.34kPa 16457m 1.3m/s 1.3m/s
02:00 ☾
58% 5.9°C 0mm 74% 0cm -29° 10°C 0.44mm 0.32kPa 24135m 1.2m/s 1.2m/s
03:00 ☾
67% 6°C 0mm 77% 0cm -26° 9.9°C 0mm 0.28kPa 22204m 1m/s 0.94m/s
04:00 ☾
75% 6.2°C 0mm 77% 0cm -20° 10°C 0.06mm 0.29kPa 24134m 0.83m/s 0.72m/s
05:00 ☾
84% 5.4°C 0mm 75% 0cm -13° 9.6°C 0.06mm 0.3kPa 24134m 0.61m/s 0.58m/s
06:00 ☾
84% 5.1°C 0mm 76% 0cm -3.7° 9°C 0.06mm 0.27kPa 24135m 0.7m/s 0.62m/s
07:00
84% 5.3°C 0mm 72% 0cm 6° 10°C 0.13mm 0.34kPa 24134m 0.62m/s 0.48m/s
08:00
84% 5.7°C 0mm 60% 0cm 16° 13°C 0.13mm 0.6kPa 24135m 0.62m/s 0.6m/s
09:00
86% 5°C 0mm 53% 0cm 26° 14°C 0mm 0.77kPa 24134m 0.73m/s 0.72m/s
10:00
89% 4.9°C 0mm 49% 0cm 36° 15°C 0.13mm 0.89kPa 24134m 1m/s 1m/s
11:00
91% 4.6°C 0mm 46% 0cm 46° 16°C 0.13mm 1kPa 24134m 0.9m/s 1m/s
12:00
84% 4.5°C 0mm 43% 0cm 53° 17°C 0.31mm 1.1kPa 18938m 1.1m/s 1.3m/s
13:00
78% 4.9°C 0mm 43% 0cm 57° 18°C 0.63mm 1.1kPa 16735m 1.5m/s 1.6m/s
14:00
71% 5.6°C 0mm 44% 0cm 57° 18°C 1.2mm 1.1kPa 15487m 1.8m/s 1.7m/s
15:00
48% 6.4°C 0mm 49% 0cm 52° 17°C 0.63mm 0.99kPa 15567m 1.9m/s 2.6m/s
16:00
24% 8°C 0.28mm 63% 0cm 44° 15°C 1.9mm 0.62kPa 14166m 2.4m/s 2.7m/s
17:00
1% 8.9°C 1.3mm 83% 0cm 35° 12°C 3.8mm 0.23kPa 8784m 2.5m/s 0.95m/s
18:00
1% 8.3°C 0.69mm 85% 0cm 25° 11°C 5.4mm 0.19kPa 11058m 2.5m/s 1.3m/s
19:00
1% 7.6°C 0mm 78% 0cm 14° 11°C 5.8mm 0.29kPa 24135m 1.9m/s 1.7m/s
20:00
1% 7.7°C 0mm 75% 0cm 4.3° 12°C 5.8mm 0.34kPa 24134m 1.8m/s 1.9m/s
21:00 ☾
4% 7.5°C 0mm 75% 0cm -5.4° 12°C 0mm 0.34kPa 24134m 1.5m/s 1.6m/s
22:00 ☾
7% 7.1°C 0mm 77% 0cm -14° 11°C 0.06mm 0.3kPa 24134m 1.4m/s 1.4m/s
23:00 ☾
10% 6.6°C 0mm 74% 0cm -21° 11°C 0.06mm 0.35kPa 24134m 1.8m/s 1.9m/s
Sun, Aug 16 Sunrise 06:19 Sunset 20:30
24:00 ☾
10% 6.3°C 0mm 72% 0cm -27° 11°C 0.06mm 0.38kPa 24134m 2.2m/s 2.3m/s
01:00 ☾
11% 6.1°C 0mm 73% 0cm -29° 11°C 0.06mm 0.35kPa 24135m 2.1m/s 2.2m/s
02:00 ☾
11% 6.1°C 0mm 75% 0cm -29° 10°C 0.06mm 0.31kPa 24135m 2m/s 2.1m/s
03:00 ☾
17% 6.2°C 0mm 68% 0cm -26° 12°C 0.13mm 0.44kPa 24135m 1.8m/s 1.9m/s
04:00 ☾
24% 6.1°C 0mm 62% 0cm -20° 13°C 0.19mm 0.58kPa 24135m 1.6m/s 1.7m/s
05:00 ☾
30% 5.9°C 0mm 55% 0cm -13° 15°C 0.25mm 0.75kPa 24135m 1.3m/s 1.6m/s
06:00 ☾
31% 6.5°C 0mm 58% 0cm -3.9° 15°C 0.88mm 0.7kPa 19880m 1.8m/s 1.9m/s
07:00
32% 7°C 0mm 61% 0cm 5.8° 15°C 1.5mm 0.65kPa 15624m 2.2m/s 2.2m/s
08:00
33% 7.6°C 0mm 63% 0cm 16° 14°C 2.1mm 0.6kPa 11369m 2.7m/s 2.6m/s
09:00
31% 8.1°C 0mm 68% 0cm 26° 14°C 2.8mm 0.51kPa 9265m 2.6m/s 2.6m/s
10:00
29% 8.6°C 0mm 73% 0cm 36° 13°C 3.4mm 0.42kPa 7161m 2.6m/s 2.6m/s
11:00
27% 9.1°C 0mm 78% 0cm 45° 13°C 4mm 0.33kPa 5057m 2.5m/s 2.7m/s
12:00
21% 9°C 0.26mm 79% 0cm 53° 12°C 5.5mm 0.3kPa 6016m 2.4m/s 2.4m/s
13:00
16% 8.9°C 0.51mm 81% 0cm 57° 12°C 7mm 0.27kPa 6975m 2.3m/s 2.2m/s
14:00
10% 8.8°C 0.77mm 83% 0cm 56° 12°C 8.4mm 0.24kPa 7933m 2.1m/s 2m/s
15:00
8% 8.7°C 0.54mm 84% 0cm 52° 11°C 6.4mm 0.22kPa 12699m 1.7m/s 1.6m/s
16:00
5% 8.7°C 0.32mm 84% 0cm 44° 11°C 4.3mm 0.21kPa 17464m 1.2m/s 1.1m/s
17:00
3% 8.6°C 0.09mm 85% 0cm 34° 11°C 2.3mm 0.19kPa 22229m 0.75m/s 0.66m/s
18:00
2% 8.5°C 0.14mm 86% 0cm 24° 11°C 2.8mm 0.18kPa 21755m 0.74m/s 0.67m/s
19:00
2% 8.3°C 0.2mm 87% 0cm 14° 10°C 3.3mm 0.16kPa 21282m 0.72m/s 0.69m/s
20:00
1% 8.2°C 0.25mm 88% 0cm 4.1° 10°C 3.8mm 0.15kPa 20808m 0.71m/s 0.7m/s
21:00 ☾
2% 7.7°C 0.39mm 89% 0cm -5.7° 9.4°C 4.2mm 0.13kPa 19634m 0.92m/s 0.5m/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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