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Rule Fog Hunter

Forest Fog in Nuuksio

Uusimaa, Finland

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No fog predicted. Morning mist drifting through the boreal forest creates magical atmospheres.

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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

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

No opportunities in the next 14 days

See the blocker timeline above to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

Fog Hunter detects atmospheric conditions ideal for moody photography:

  • Fog Probability: Based on humidity, temperature, and dewpoint spread
  • Visibility: Looking for that ethereal, limited visibility effect
  • Wind Speed: Calm conditions help fog form and persist
  • Dewpoint Spread: When air temperature approaches dewpoint, fog forms

Perfect for forest scenes, mountain valleys, and atmospheric landscapes.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 72 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Fri, Jan 9
20:000%7.1°C70080m4.3m/s
21:000%7.1°C70080m4m/s
22:000%7.3°C70080m3.9m/s
23:000%7.7°C70060m4.2m/s
Sat, Jan 10
24:000%8°C63020m4.1m/s
01:000%8.7°C58380m4m/s
02:000%8.2°C47180m4m/s
03:000%9°C52920m4.2m/s
04:000%7°C44720m4.4m/s
05:000%4.9°C57160m4.7m/s
06:000%3.7°C63000m4.6m/s
07:000%3°C58880m4.8m/s
08:000%2.7°C55180m4.9m/s
09:000%2.6°C56320m5.2m/s
10:000%2.6°C41260m5.2m/s
11:000%2.9°C48920m5.2m/s
12:000%3.2°C41820m5.4m/s
13:000%4.1°C36820m5.4m/s
14:000%5°C24920m5.4m/s
15:000%5.3°C35880m5.4m/s
16:000%5.7°C26800m5.3m/s
17:000%5.9°C18060m5.2m/s
18:000%6.1°C17440m5.2m/s
19:000%6.1°C25940m5.4m/s
20:000%5.9°C18980m5.4m/s
21:000%5.7°C18320m5.5m/s
22:000%5.9°C21300m5.5m/s
23:000%5.7°C18100m5.5m/s
Sun, Jan 11
24:000%5.5°C11180m5.5m/s
01:000%5.2°C12140m5.5m/s
02:000%4.6°C13480m5.3m/s
03:000%4.1°C12560m5.2m/s
04:000%3.6°C10500m5m/s
05:000%3.3°C11160m5m/s
06:000%3.5°C9500m5m/s
07:000%3.5°C9260m5m/s
08:000%3.5°C9380m5m/s
09:000%3.3°C9360m4.6m/s
10:000%3.3°C8820m4.4m/s
11:000%3.3°C9140m4.3m/s
12:000%3.3°C12600m4m/s
13:000%3.5°C16240m3.9m/s
14:000%3.3°C16480m3.8m/s
15:000%3.1°C15200m3.8m/s
16:000%2.8°C11080m4.1m/s
17:000%2.8°C17140m4.4m/s
18:000%2.7°C13700m4.6m/s
19:000%2.5°C30560m4.8m/s
20:000%2.2°C24380m4.6m/s
21:000%2.4°C22200m4.5m/s
22:000%2.4°C28360m4.5m/s
23:000%2.2°C38700m4.4m/s
Mon, Jan 12
24:000%2.2°C46620m4.4m/s
01:000%2°C46180m4.6m/s
02:000%2°C44160m4.7m/s
03:000%2°C30340m4.7m/s
04:000%2°C56680m4.4m/s
05:000%1.7°C58040m4m/s
06:000%1.6°C55160m4.1m/s
07:000%1.6°C50760m4.1m/s
08:000%1.6°C51460m4.1m/s
09:000%1.6°C53620m3.9m/s
10:000%1.6°C50720m3.9m/s
11:000%1.9°C55360m3.7m/s
12:000%2.3°C53160m3.6m/s
13:000%2.5°C49560m3.6m/s
14:000%2.2°C38480m4m/s
15:000%1.8°C39420m3.7m/s
16:000%1.5°C46500m3.5m/s
17:000%1.4°C47840m3.3m/s
18:000%1.4°C46460m3.2m/s
19:000%1.4°C35680m3.3m/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/Helsinki
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Fri, Jan 9 Sunrise 09:20 Sunset 15:37
21:00
-21°C 0mm 55% 0cm -14°C 0mm 0.09kPa 11m/s
22:00
-21°C 0mm 54% 0cm -14°C 0mm 0.09kPa 9.9m/s
23:00
-21°C 0mm 52% 0cm -14°C 0mm 0.1kPa 11m/s
Sat, Jan 10 Sunrise 09:20 Sunset 15:37
24:00
-21°C 0mm 51% 0cm -13°C 0mm 0.11kPa 10m/s
01:00
-22°C 0mm 48% 0cm -13°C 0mm 0.12kPa 10m/s
02:00
-21°C 0mm 50% 0cm -13°C 0mm 0.12kPa 9.9m/s
03:00
-21°C 0mm 47% 0cm -12°C 0mm 0.12kPa 10m/s
04:00
-19°C 0mm 56% 0cm -12°C 0mm 0.11kPa 11m/s
05:00
-17°C 0mm 67% 0cm -12°C 0mm 0.08kPa 12m/s
06:00
-16°C 0mm 74% 0cm -12°C 0mm 0.06kPa 12m/s
07:00
-15°C 0mm 78% 0cm -12°C 0mm 0.05kPa 12m/s
08:00
-14°C 0mm 80% 0cm -11°C 0mm 0.05kPa 12m/s
09:00
-14°C 0mm 81% 0cm -11°C 0mm 0.05kPa 13m/s
10:00
-13°C 0mm 81% 0cm -11°C 0mm 0.05kPa 13m/s
11:00
-14°C 0mm 79% 0cm -11°C 0mm 0.06kPa 13m/s
12:00
-13°C 0mm 77% 0cm -10°C 0mm 0.06kPa 13m/s
13:00
-14°C 0mm 72% 0cm -10°C 0mm 0.08kPa 14m/s
14:00
-15°C 0mm 67% 0cm -9.6°C 0mm 0.1kPa 14m/s
15:00
-15°C 0mm 65% 0cm -9.4°C 0mm 0.1kPa 14m/s
16:00
-15°C 0mm 63% 0cm -9.4°C 0mm 0.11kPa 14m/s
17:00
-15°C 0mm 62% 0cm -9.3°C 0mm 0.11kPa 13m/s
18:00
-15°C 0mm 61% 0cm -9.2°C 0mm 0.12kPa 13m/s
19:00
-15°C 0mm 61% 0cm -9.2°C 0mm 0.12kPa 14m/s
20:00
-15°C 0mm 62% 0cm -9.3°C 0mm 0.11kPa 14m/s
21:00
-15°C 0mm 63% 0cm -9.3°C 0mm 0.11kPa 14m/s
22:00
-15°C 0mm 62% 0cm -9.3°C 0mm 0.11kPa 14m/s
23:00
-15°C 0mm 63% 0cm -9.2°C 0mm 0.11kPa 14m/s
Sun, Jan 11 Sunrise 09:19 Sunset 15:39
24:00
-15°C 0mm 64% 0cm -9.3°C 0mm 0.11kPa 14m/s
01:00
-14°C 0mm 66% 0cm -9.2°C 0mm 0.1kPa 14m/s
02:00
-14°C 0mm 69% 0cm -9.1°C 0mm 0.1kPa 14m/s
03:00
-13°C 0mm 72% 0.07cm -8.8°C 0.1mm 0.09kPa 14m/s
04:00
-12°C 0mm 75% 0.14cm -8.5°C 0.2mm 0.08kPa 13m/s
05:00
-11°C 0mm 77% 0.14cm -8.2°C 0.2mm 0.08kPa 13m/s
06:00
-11°C 0mm 76% 0.14cm -7.9°C 0.2mm 0.08kPa 13m/s
07:00
-11°C 0mm 76% 0.14cm -7.7°C 0.2mm 0.08kPa 13m/s
08:00
-11°C 0mm 76% 0.21cm -7.7°C 0.3mm 0.08kPa 13m/s
09:00
-11°C 0mm 77% 0.21cm -8°C 0.3mm 0.08kPa 13m/s
10:00
-12°C 0mm 77% 0.07cm -8.3°C 0.1mm 0.08kPa 12m/s
11:00
-12°C 0mm 77% 0cm -8.3°C 0mm 0.08kPa 11m/s
12:00
-12°C 0mm 77% 0cm -8.3°C 0mm 0.08kPa 11m/s
13:00
-12°C 0mm 76% 0cm -8.3°C 0mm 0.08kPa 10m/s
14:00
-11°C 0mm 77% 0cm -8.1°C 0mm 0.08kPa 9.9m/s
15:00
-11°C 0mm 78% 0.07cm -8.1°C 0.1mm 0.07kPa 9.8m/s
16:00
-11°C 0mm 80% 0.07cm -8°C 0.1mm 0.07kPa 9.8m/s
17:00
-11°C 0mm 80% 0.07cm -7.8°C 0.1mm 0.07kPa 9.9m/s
18:00
-10°C 0mm 81% 0.07cm -7.7°C 0.1mm 0.07kPa 10m/s
19:00
-10°C 0mm 82% 0.07cm -7.8°C 0.1mm 0.06kPa 9.8m/s
20:00
-11°C 0mm 84% 0cm -8.4°C 0mm 0.05kPa 9.5m/s
21:00
-10°C 0mm 83% 0cm -8.1°C 0mm 0.06kPa 9m/s
22:00
-11°C 0mm 83% 0cm -8.2°C 0mm 0.06kPa 9m/s
23:00
-11°C 0mm 84% 0cm -8.6°C 0mm 0.05kPa 9m/s
Mon, Jan 12 Sunrise 09:18 Sunset 15:41
24:00
-11°C 0mm 84% 0cm -9°C 0mm 0.05kPa 8.7m/s
01:00
-11°C 0mm 85% 0cm -9.2°C 0mm 0.05kPa 8.9m/s
02:00
-11°C 0mm 85% 0cm -9.4°C 0mm 0.04kPa 9.2m/s
03:00
-11°C 0mm 85% 0cm -9.4°C 0mm 0.04kPa 9.3m/s
04:00
-11°C 0mm 85% 0cm -9.4°C 0mm 0.04kPa 9m/s
05:00
-12°C 0mm 87% 0cm -9.9°C 0mm 0.04kPa 8.4m/s
06:00
-12°C 0mm 88% 0cm -10°C 0mm 0.03kPa 7.7m/s
07:00
-12°C 0mm 88% 0cm -11°C 0mm 0.03kPa 7.7m/s
08:00
-12°C 0mm 88% 0cm -11°C 0mm 0.03kPa 7.7m/s
09:00
-13°C 0mm 88% 0cm -11°C 0mm 0.03kPa 7.7m/s
10:00
-13°C 0mm 88% 0cm -11°C 0mm 0.03kPa 7.4m/s
11:00
-13°C 0mm 86% 0cm -11°C 0mm 0.04kPa 7.3m/s
12:00
-12°C 0mm 83% 0cm -9.9°C 0mm 0.05kPa 7m/s
13:00
-12°C 0mm 82% 0cm -9.1°C 0mm 0.06kPa 7.4m/s
14:00
-11°C 0mm 84% 0cm -9°C 0mm 0.05kPa 7.8m/s
15:00
-11°C 0mm 87% 0cm -9.5°C 0mm 0.04kPa 7.8m/s
16:00
-12°C 0mm 89% 0cm -10°C 0mm 0.03kPa 7.1m/s
17:00
-12°C 0mm 89% 0cm -11°C 0mm 0.03kPa 6.6m/s
18:00
-13°C 0mm 89% 0cm -11°C 0mm 0.03kPa 6m/s
19:00
-13°C 0mm 89% 0cm -12°C 0mm 0.03kPa 6m/s
20:00
-13°C 0mm 89% 0cm -11°C 0mm 0.03kPa 5.9m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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