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Rule Fog Hunter

Fog Hunter Forecast for Thingvellir, Iceland

Laugarvatn, South, Iceland

Þingvellir exposes rift walls, lava fields, clear fissure water, and the shore of Þingvallavatn. Long geological lines lead through the site, while birch and low vegetation introduce concentrated autumn colour.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread0.1°C
Visibility103 (Dense fog)
Relative Humidity99%
Wind Speed6.4m/s (moderate winds)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Atlantic/Reykjavik

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (85-hour forecast)

  • Fog Probability100% of hours

How this forecast is evaluated

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

Explore Fog Hunter conditions across Iceland →

Recorded match history

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

Last 30 days
5
recorded matching windows · 72% average confidence
Last 90 days
26
recorded matching windows · 78% average confidence
Last 365 days
35
recorded matching windows · 81% average confidence
Most represented month

July, with 20 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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85-hour requirements breakdown

When available, the detailed table below covers only the stated 85-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 85 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Atlantic/Reykjavik
Fog Probability
≥ 75.0%
Sat, Aug 22
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 23
24:000%
01:0042%
02:0042%
03:000%
04:000%
05:000%
06:000%
07:0038%
08:0021%
09:0019%
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, Aug 24
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%
Tue, Aug 25
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%
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
Atlantic/Reykjavik
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, Aug 22 Sunrise 05:35 Sunset 21:14
20:00
0% 9.6°C 3.3mm 99% 0cm 6.8° 9.7°C 5.8mm 0.01kPa 103m 14m/s 6.4m/s
21:00
0% 9.7°C 1.1mm 99% 0cm 0.98° 9.9°C 7.6mm 0.01kPa 92m 12m/s 6m/s
22:00 ☾
0% 9.8°C 1.3mm 99% 0cm -4.8° 10°C 8.8mm 0.01kPa 81m 11m/s 5.5m/s
23:00 ☾
0% 9.9°C 0.74mm 99% 0cm -9.4° 10°C 9.6mm 0.01kPa 75m 10m/s 5m/s
Sun, Aug 23 Sunrise 05:38 Sunset 21:10
24:00 ☾
0% 9.9°C 0.57mm 99% 0cm -13° 10°C 10mm 0.01kPa 74m 9.5m/s 4.4m/s
01:00 ☾
0% 10°C 0.44mm 99% 0cm -14° 10°C 0.44mm 0.01kPa 67m 9.4m/s 3.9m/s
02:00 ☾
0% 10°C 0.43mm 100% 0cm -14° 10°C 0.75mm 0.01kPa 63m 8.9m/s 3.8m/s
03:00 ☾
0% 10°C 0.27mm 100% 0cm -12° 10°C 1.3mm 0.01kPa 58m 9.6m/s 4m/s
04:00 ☾
0% 9.9°C 0.01mm 99% 0cm -8.9° 10°C 1.4mm 0.02kPa 133m 9.1m/s 4.5m/s
05:00 ☾
0% 8.9°C 0mm 96% 0cm -4.2° 9.5°C 1.6mm 0.04kPa 24135m 9.3m/s 5.1m/s
06:00
0% 7°C 0mm 91% 0cm 1.6° 8.5°C 1.8mm 0.1kPa 24135m 7.8m/s 5m/s
07:00
0% 7°C 0.15mm 95% 0cm 7.6° 7.7°C 0.13mm 0.05kPa 24135m 7.7m/s 3.5m/s
08:00
0% 7.3°C 0.21mm 96% 0cm 14° 7.9°C 0.44mm 0.04kPa 16397m 7.4m/s 3.7m/s
09:00
0% 7.3°C 0.09mm 95% 0cm 20° 8°C 0.75mm 0.05kPa 22167m 7m/s 3.6m/s
10:00
0% 7.2°C 0mm 94% 0cm 26° 8.2°C 0.94mm 0.07kPa 19307m 5.7m/s 3.7m/s
11:00
0% 5.9°C 0mm 81% 0cm 31° 9.1°C 1.1mm 0.22kPa 24135m 5.4m/s 3.7m/s
12:00
0% 5.1°C 0mm 74% 0cm 35° 9.5°C 1.2mm 0.31kPa 24135m 6.4m/s 5.1m/s
13:00
1% 5.7°C 0mm 78% 0cm 37° 9.4°C 0.06mm 0.26kPa 24135m 6.9m/s 5.4m/s
14:00
3% 5.2°C 0mm 71% 0cm 37° 10°C 0.19mm 0.37kPa 24134m 6.8m/s 5.7m/s
15:00
4% 4°C 0mm 64% 0cm 35° 10°C 0.25mm 0.45kPa 15269m 6.6m/s 5.9m/s
16:00
5% 4°C 0mm 65% 0cm 31° 10°C 0.25mm 0.44kPa 24135m 5.9m/s 5.2m/s
17:00
7% 4.5°C 0mm 70% 0cm 25° 9.8°C 0.31mm 0.37kPa 24134m 5.8m/s 4.8m/s
18:00
8% 4.8°C 0mm 72% 0cm 19° 9.6°C 0.38mm 0.34kPa 24135m 4.9m/s 4.2m/s
19:00
24% 5.1°C 0.01mm 74% 0cm 13° 9.5°C 0.06mm 0.31kPa 24134m 3.8m/s 3.5m/s
20:00
41% 5.9°C 0mm 83% 0cm 6.5° 8.6°C 0.06mm 0.19kPa 24134m 3m/s 2.4m/s
21:00
57% 4.8°C 0mm 91% 0cm 0.68° 6.2°C 0.06mm 0.09kPa 24134m 1.6m/s 1.7m/s
22:00 ☾
49% 4.3°C 0mm 94% 0cm -5.2° 5.2°C 0.06mm 0.05kPa 24134m 1m/s 0.96m/s
23:00 ☾
40% 4.2°C 0mm 95% 0cm -9.7° 5°C 0.06mm 0.05kPa 24134m 0.81m/s 0.8m/s
Mon, Aug 24 Sunrise 05:41 Sunset 21:06
24:00 ☾
32% 4.1°C 0mm 95% 0cm -13° 4.9°C 0.06mm 0.05kPa 24134m 0.9m/s 0.93m/s
01:00 ☾
22% 4.1°C 0mm 94% 0cm -14° 5°C 0mm 0.05kPa 24134m 1.6m/s 1.7m/s
02:00 ☾
13% 4°C 0mm 94% 0cm -14° 4.9°C 0mm 0.05kPa 24134m 1.5m/s 1.6m/s
03:00 ☾
3% 4.1°C 0mm 92% 0cm -13° 5.4°C 0mm 0.07kPa 24135m 2.2m/s 2.2m/s
04:00 ☾
2% 3.8°C 0mm 90% 0cm -9.2° 5.4°C 0mm 0.09kPa 24134m 2.6m/s 2.7m/s
05:00 ☾
2% 3.3°C 0mm 88% 0cm -4.5° 5.2°C 0mm 0.11kPa 24134m 2.4m/s 2.5m/s
06:00
1% 3.1°C 0mm 83% 0cm 1.4° 5.7°C 0mm 0.15kPa 24134m 3.1m/s 3.3m/s
07:00
3% 3.3°C 0mm 79% 0cm 7.3° 6.7°C 0mm 0.21kPa 24134m 3.6m/s 3.4m/s
08:00
6% 3.8°C 0mm 73% 0cm 14° 8.2°C 0mm 0.29kPa 24135m 4.1m/s 3.3m/s
09:00
8% 3.8°C 0mm 68% 0cm 20° 9.5°C 0mm 0.38kPa 24135m 5.2m/s 3.7m/s
10:00
6% 4.3°C 0.01mm 68% 0cm 26° 10°C 0mm 0.39kPa 24134m 9.9m/s 4.4m/s
11:00
5% 4.3°C 0.01mm 65% 0cm 31° 11°C 0mm 0.45kPa 24134m 10m/s 5.6m/s
12:00
3% 5.6°C 1.1mm 79% 0cm 35° 9°C 0.69mm 0.24kPa 10561m 12m/s 5.9m/s
13:00
3% 6.2°C 1.9mm 88% 0cm 37° 8.1°C 1.6mm 0.13kPa 7729m 12m/s 4.6m/s
14:00
2% 6.4°C 1.2mm 87% 0cm 36° 8.4°C 3.3mm 0.14kPa 10351m 14m/s 6.1m/s
15:00
2% 6.6°C 1.1mm 85% 0cm 34° 9°C 4.2mm 0.17kPa 12308m 15m/s 7m/s
16:00
1% 7°C 1.3mm 86% 0cm 30° 9.1°C 5.3mm 0.16kPa 10596m 17m/s 9m/s
17:00
1% 8.1°C 0.34mm 87% 0cm 25° 10°C 6mm 0.16kPa 24134m 18m/s 11m/s
18:00
0% 8.9°C 0.41mm 88% 0cm 19° 11°C 6.3mm 0.16kPa 24135m 17m/s 12m/s
19:00
2% 9°C 0.11mm 86% 0cm 13° 11°C 0.19mm 0.19kPa 23938m 18m/s 12m/s
20:00
4% 8.9°C 0mm 86% 0cm 6.2° 11°C 0.19mm 0.19kPa 24134m 17m/s 13m/s
21:00
6% 8.3°C 0mm 83% 0cm 0.39° 11°C 0.19mm 0.22kPa 24134m 18m/s 13m/s
22:00 ☾
6% 8.5°C 0mm 83% 0cm -5.5° 11°C 0.19mm 0.23kPa 24135m 17m/s 13m/s
23:00 ☾
5% 9°C 0.01mm 92% 0cm -10° 10°C 0.19mm 0.09kPa 24134m 15m/s 11m/s
Tue, Aug 25 Sunrise 05:44 Sunset 21:03
24:00 ☾
5% 8.9°C 0mm 91% 0cm -13° 10°C 0.25mm 0.11kPa 24134m 6.7m/s 4.1m/s
01:00 ☾
7% 8.9°C 0mm 89% 0cm -15° 11°C 0.21mm 0.14kPa 24134m 8m/s 4.8m/s
02:00 ☾
9% 8.8°C 0mm 87% 0cm -15° 11°C 0.17mm 0.17kPa 24134m 9.3m/s 5.4m/s
03:00 ☾
11% 8.7°C 0mm 84% 0cm -13° 11°C 0.13mm 0.21kPa 24135m 11m/s 6.1m/s
04:00 ☾
12% 8.9°C 0.04mm 83% 0cm -9.5° 12°C 0.63mm 0.23kPa 20735m 10m/s 6.6m/s
05:00 ☾
12% 9°C 0.07mm 82% 0cm -4.8° 12°C 1.1mm 0.25kPa 17336m 10m/s 7.1m/s
06:00
13% 9.2°C 0.11mm 81% 0cm 1.1° 12°C 1.6mm 0.28kPa 13937m 10m/s 7.6m/s
07:00
16% 8.9°C 0.08mm 77% 0cm 7.1° 13°C 1.2mm 0.34kPa 17336m 10m/s 7.4m/s
08:00
20% 8.6°C 0.06mm 73% 0cm 13° 13°C 0.75mm 0.41kPa 20736m 9.7m/s 7.2m/s
09:00
23% 8.2°C 0.03mm 69% 0cm 20° 14°C 0.31mm 0.48kPa 24135m 9.3m/s 7m/s
10:00
23% 8.6°C 0.02mm 73% 0cm 26° 13°C 0.4mm 0.42kPa 22651m 9.2m/s 6.6m/s
11:00
23% 9°C 0.01mm 76% 0cm 31° 13°C 0.48mm 0.36kPa 21166m 9.1m/s 6.1m/s
12:00
23% 9.4°C 0mm 80% 0cm 34° 13°C 0.56mm 0.3kPa 19682m 9m/s 5.7m/s
13:00
23% 8.9°C 0.003mm 84% 0cm 36° 12°C 0.42mm 0.22kPa 21166m 6.8m/s 4.3m/s
14:00
22% 8.3°C 0.007mm 88% 0cm 36° 10°C 0.27mm 0.15kPa 22651m 4.6m/s 2.9m/s
15:00
22% 7.7°C 0.01mm 92% 0cm 34° 8.8°C 0.13mm 0.08kPa 24135m 2.4m/s 1.6m/s
16:00
19% 7.4°C 0.007mm 92% 0cm 30° 8.5°C 0.15mm 0.08kPa 24135m 2.5m/s 1.9m/s
17:00
17% 7.1°C 0.003mm 92% 0cm 25° 8.3°C 0.17mm 0.08kPa 24135m 2.5m/s 2.2m/s
18:00
14% 6.8°C 0mm 92% 0cm 19° 8°C 0.19mm 0.08kPa 24135m 2.5m/s 2.5m/s
19:00
12% 7.1°C 0.05mm 92% 0cm 12° 8.3°C 0.25mm 0.09kPa 24135m 3m/s 2.6m/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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