What conditions does Fog Hunter look for?

Fog Probability: ≥ 85.0%. Dewpoint Spread: ≤ 2.0°C. Visibility: ≤ 3000.0m. Wind Speed: ≤ 2.0m/s

How often do conditions match?

There are 10 upcoming opportunity windows in the next 10 days.

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Rule Fog Hunter

Jasna Lake - Fog Hunter - Slovenian Alps

Kranjska Gora, Kranjska Gora, Slovenia

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions

Fog Probability

64%

Dewpoint Spread0.7°C

Visibility24135 (Clear)

Relative Humidity96%

Wind Speed0.7m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Ljubljana

Next opportunity

Dense Fog (lingering) at Sunrise

Jasna Lake

Tomorrow · 08:00–09:00 · 1h window

High confidence

77%

🌫️Fog Probability100%

Dewpoint Spread: 0.5°C

Visibility: 530 (Fog)

Relative Humidity: 97%

Wind Speed: 0.2m/s (calm conditions)

Dense Fog (lingering)

Jasna Lake

Tomorrow · 09:00–10:00

🌫️Fog Probability:100%

High

Dense Fog (lingering) at Sunset

Jasna Lake

Tomorrow · 16:00–18:00

🌫️Fog Probability:100%

High

Dense Fog (lingering)

Jasna Lake

Tomorrow · 18:00–23:00

🌫️Fog Probability:100%

High

Dense Fog (lingering)

Jasna Lake

Tue, Feb 10 · 02:00–06:00

🌫️Fog Probability:100%

High

Dense Fog (lingering) at Sunrise

Jasna Lake

Tue, Feb 10 · 06:00–08:00

🌫️Fog Probability:100%

High

Dense Fog (lingering)

Jasna Lake

Tue, Feb 10 · 08:00–12:00

🌫️Fog Probability:91.1-100%

High

+3 more windows in the next 10 days

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the atmospheric conditions that create Slovenia's most iconic photography. We combine fog probability, dewpoint spread, and visibility data to predict when mist transforms these fairy-tale landscapes.

Lake Bled with its island church is one of Europe's most photographed scenes, but morning fog can elevate it to truly magical. The Julian Alps offer dramatic peaks rising above emerald lakes and valleys, with conditions that can transform overnight.

What makes the Slovenian Alps special for photography:

Lake fog - Bled and Bohinj produce reliable morning mist that frames the dramatic scenery
Fairy-tale compositions - Island churches, medieval castles, and Alpine villages
Emerald waters - Glacially-fed lakes with distinctive turquoise color
Compact geography - Multiple iconic locations within short distances

Peak fog season runs from late August through October. Arrive well before dawn for the best mist at Lake Bled—conditions can change rapidly as the sun warms the valley. Higher viewpoints like Ojstrica or Mala Osojnica offer shots looking down at fog-shrouded lakes.

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72-hour requirements breakdown

What passed or failed, hour by hour

19matching hours in the next 72 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/Ljubljana	Fog Probability ≥ 85.0%	Dewpoint Spread ≤ 2.0°C	Visibility ≤ 3000.0m	Wind Speed ≤ 2.0m/s
Sun, Feb 8
07:00	64%	0.6°C	24134m	0.93m/s
08:00	64%	0.7°C	24135m	0.71m/s
09:00	60%	0.9°C	24134m	0.24m/s
10:00	0%	1.2°C	10860m	0.35m/s
11:00	0%	1.5°C	10391m	0.62m/s
12:00	0%	1.7°C	10381m	0.51m/s
13:00	0%	1.8°C	10379m	0.33m/s
14:00	0%	1.8°C	10380m	0.21m/s
15:00	0%	1.7°C	10391m	0.38m/s
16:00	72%	0.7°C	10409m	0.55m/s
17:00	92%	0.7°C	3980m	1.2m/s
18:00	64%	0.6°C	17307m	1.4m/s
19:00	64%	0.6°C	17327m	1.4m/s
20:00	64%	0.6°C	17384m	1.3m/s
21:00	60%	0.8°C	17744m	1m/s
22:00	60%	1°C	24134m	0.82m/s
23:00	60%	1°C	24135m	0.66m/s
Mon, Feb 9
24:00	60%	0.9°C	24135m	0.58m/s
01:00	60%	0.7°C	24135m	0.65m/s
02:00	72%	0.7°C	11862m	0.58m/s
03:00	72%	0.5°C	10616m	0.55m/s
04:00	75%	0.5°C	10514m	0.5m/s
05:00	72%	0.5°C	10529m	0.24m/s
06:00	72%	0.6°C	11024m	0.24m/s
07:00	72%	0.6°C	10067m	0.16m/s
08:00	100%	0.5°C	530m	0.2m/s
09:00	100%	0.5°C	438m	0.43m/s
10:00	81%	0.5°C	2063m	0.63m/s
11:00	64%	0.6°C	7297m	0.65m/s
12:00	64%	0.7°C	7151m	0.79m/s
13:00	61%	0.8°C	6803m	0.98m/s
14:00	0%	1°C	7039m	1m/s
15:00	71%	0.6°C	6996m	1m/s
16:00	100%	0.1°C	345m	1.1m/s
17:00	100%	0.1°C	89m	1m/s
18:00	100%	0°C	57m	0.9m/s
19:00	100%	0.1°C	45m	0.87m/s
20:00	100%	0.2°C	55m	0.83m/s
21:00	100%	0°C	49m	0.68m/s
22:00	100%	0°C	49m	0.62m/s
23:00	63%	0.1°C	50m	0.52m/s
Tue, Feb 10
24:00	63%	0.1°C	48m	0.32m/s
01:00	63%	0.2°C	48m	0.25m/s
02:00	100%	0.2°C	68m	0.23m/s
03:00	100%	0.4°C	104m	0.05m/s
04:00	100%	0.3°C	200m	0.01m/s
05:00	100%	0.6°C	450m	0.07m/s
06:00	100%	0.2°C	283m	0.38m/s
07:00	100%	0.1°C	170m	0.26m/s
08:00	100%	0.2°C	174m	0.16m/s
09:00	100%	0.3°C	175m	0.19m/s
10:00	100%	0.5°C	435m	0.41m/s
11:00	91%	0.6°C	832m	0.49m/s
12:00	0%	1°C	3694m	0.71m/s
13:00	0%	1.3°C	7666m	0.95m/s
14:00	0%	1.6°C	13156m	1.2m/s
15:00	0%	2°C	18645m	1.5m/s
16:00	0%	2.3°C	24135m	1.8m/s
17:00	0%	2.3°C	24135m	1.8m/s
18:00	0%	2.3°C	24135m	1.9m/s
19:00	0%	2.3°C	24135m	1.9m/s
20:00	0%	2.1°C	21742m	1.9m/s
21:00	0%	2°C	19349m	1.8m/s
22:00	0%	1.7°C	16955m	1.8m/s
23:00	0%	1.5°C	14821m	1.8m/s
Wed, Feb 11
24:00	0%	1.4°C	12686m	1.8m/s
01:00	0%	1.2°C	10551m	1.8m/s
02:00	0%	1°C	8682m	1.6m/s
03:00	38%	0.9°C	6814m	1.5m/s
04:00	44%	0.7°C	4945m	1.3m/s
05:00	44%	1°C	4980m	1.3m/s
06:00	0%	1.2°C	5016m	1.2m/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/Ljubljana	Dew Point °C	Rainfall mm	Relative Humidity %	Snowfall cm	Temperature °C	Total Precipitation mm	Vapor Pressure Deficit kPa	Wind Gusts m/s
Sun, Feb 8 Sunrise 07:19 Sunset 17:19
08:00	-2.2°C	0mm	96%	0cm	-1.5°C	0mm	0.02kPa	0.61m/s
09:00	-0.1°C	0mm	93%	0cm	0.83°C	0mm	0.04kPa	0.81m/s
10:00	0.6°C	0mm	92%	0cm	1.8°C	0mm	0.06kPa	0.51m/s
11:00	1.2°C	0mm	90%	0cm	2.7°C	0mm	0.08kPa	0.51m/s
12:00	1.5°C	0.01mm	88%	0cm	3.2°C	0.06mm	0.09kPa	0.41m/s
13:00	1.6°C	0.01mm	88%	0.05cm	3.4°C	0.06mm	0.1kPa	0.71m/s
14:00	1.6°C	0.01mm	88%	0cm	3.4°C	0.06mm	0.1kPa	0.5m/s
15:00	1.4°C	0mm	88%	0cm	3.1°C	0.13mm	0.09kPa	0.5m/s
16:00	1.7°C	0mm	96%	0cm	2.4°C	0.13mm	0.03kPa	0.61m/s
17:00	-0.3°C	0mm	96%	0cm	0.36°C	0.19mm	0.03kPa	1.1m/s
18:00 ☾	-1.4°C	0mm	96%	0cm	-0.79°C	0.19mm	0.02kPa	1.3m/s
19:00 ☾	-1.8°C	0mm	96%	0cm	-1.2°C	0.19mm	0.02kPa	1.2m/s
20:00 ☾	-2.6°C	0mm	95%	0cm	-2°C	0mm	0.02kPa	1.1m/s
21:00 ☾	-3.3°C	0mm	95%	0cm	-2.5°C	0mm	0.03kPa	1m/s
22:00 ☾	-3.1°C	0mm	93%	0cm	-2.1°C	0mm	0.04kPa	0.91m/s
23:00 ☾	-2.8°C	0mm	93%	0cm	-1.8°C	0mm	0.04kPa	0.8m/s
Mon, Feb 9 Sunrise 07:19 Sunset 17:19
24:00 ☾	-2.9°C	0mm	94%	0cm	-2°C	0mm	0.03kPa	0.72m/s
01:00 ☾	-3.3°C	0mm	95%	0cm	-2.6°C	0mm	0.03kPa	0.81m/s
02:00 ☾	-3.5°C	0mm	95%	0cm	-2.8°C	0mm	0.02kPa	0.7m/s
03:00 ☾	-3.2°C	0mm	96%	0cm	-2.7°C	0mm	0.02kPa	0.71m/s
04:00 ☾	-2.7°C	0mm	96%	0cm	-2.2°C	0mm	0.02kPa	0.82m/s
05:00 ☾	-2.6°C	0mm	96%	0cm	-2.1°C	0mm	0.02kPa	0.9m/s
06:00 ☾	-2.5°C	0.01mm	96%	0cm	-1.9°C	0mm	0.02kPa	0.92m/s
07:00 ☾	-2.4°C	0.01mm	96%	0cm	-1.8°C	0mm	0.02kPa	1m/s
08:00	-1.7°C	0.04mm	97%	0cm	-1.2°C	0mm	0.02kPa	0.9m/s
09:00	-1.2°C	0.01mm	97%	0cm	-0.68°C	0.06mm	0.02kPa	0.9m/s
10:00	-0.6°C	0.01mm	97%	0cm	-0.09°C	0.06mm	0.02kPa	1m/s
11:00	-0.2°C	0mm	96%	0cm	0.38°C	0.06mm	0.03kPa	0.9m/s
12:00	0.2°C	0.01mm	95%	0cm	0.85°C	0.13mm	0.03kPa	0.91m/s
13:00	0.4°C	0.01mm	95%	0cm	1.2°C	0.13mm	0.04kPa	1.1m/s
14:00	0.3°C	0.01mm	93%	0cm	1.3°C	0mm	0.05kPa	1.1m/s
15:00	0.5°C	0.02mm	96%	0cm	1.1°C	0.06mm	0.03kPa	1.2m/s
16:00	0.7°C	0.01mm	99%	0cm	0.8°C	0.13mm	0.01kPa	1.4m/s
17:00	0.4°C	0.02mm	100%	0cm	0.48°C	0.13mm	0kPa	1.5m/s
18:00 ☾	0.2°C	0.04mm	100%	0.04cm	0.23°C	0.19mm	0kPa	1.6m/s
19:00 ☾	0.1°C	0.04mm	100%	0.05cm	0.18°C	0.19mm	0kPa	1.6m/s
20:00 ☾	0.1°C	0.08mm	99%	0.09cm	0.25°C	0.06mm	0.01kPa	1.5m/s
21:00 ☾	0.1°C	0.08mm	100%	0.08cm	0.13°C	0.13mm	0kPa	1.3m/s
22:00 ☾	0°C	0.08mm	99%	0.08cm	0.04°C	0.19mm	0kPa	1.1m/s
23:00 ☾	-0.1°C	0.06mm	99%	0.06cm	0.006°C	0.31mm	0kPa	1.1m/s
Tue, Feb 10 Sunrise 07:18 Sunset 17:20
24:00 ☾	-0.1°C	0.05mm	99%	0.05cm	-0.04°C	0.31mm	0kPa	1m/s
01:00 ☾	-0.2°C	0.05mm	99%	0.05cm	-0.05°C	0.38mm	0kPa	0.8m/s
02:00 ☾	-0.2°C	0.02mm	99%	0.02cm	0.02°C	0.06mm	0.01kPa	0.5m/s
03:00 ☾	-0.5°C	0.02mm	97%	0cm	-0.06°C	0.06mm	0.02kPa	0.4m/s
04:00 ☾	-0.6°C	0.02mm	97%	0cm	-0.27°C	0.06mm	0.02kPa	0.3m/s
05:00 ☾	-0.8°C	0.03mm	96%	0cm	-0.25°C	0.13mm	0.02kPa	0.3m/s
06:00 ☾	-0.8°C	0.02mm	98%	0cm	-0.61°C	0.13mm	0.01kPa	0.5m/s
07:00 ☾	-1°C	0.02mm	99%	0cm	-0.93°C	0.13mm	0kPa	0.5m/s
08:00	-0.8°C	0.02mm	98%	0cm	-0.64°C	0mm	0.01kPa	0.31m/s
09:00	-0.4°C	0.02mm	97%	0cm	-0.07°C	0mm	0.02kPa	0.7m/s
10:00	-0.1°C	0.05mm	96%	0.07cm	0.37°C	0.06mm	0.02kPa	1.1m/s
11:00	0.2°C	0.04mm	96%	0.09cm	0.79°C	0.19mm	0.03kPa	1.1m/s
12:00	0.3°C	0.03mm	93%	0.1cm	1.3°C	0.25mm	0.05kPa	1.4m/s
13:00	0.5°C	0.02mm	91%	0.11cm	1.8°C	0.38mm	0.07kPa	1.9m/s
14:00	-0.4°C	0.02mm	89%	0.07cm	1.2°C	0.25mm	0.08kPa	1.7m/s
15:00	-1.4°C	0.01mm	87%	0.04cm	0.62°C	0.13mm	0.09kPa	1.6m/s
16:00	-2.3°C	0.01mm	84%	0cm	0.01°C	0mm	0.09kPa	1.4m/s
17:00	-2.4°C	0.007mm	85%	0cm	-0.07°C	0mm	0.09kPa	1.6m/s
18:00 ☾	-2.4°C	0.003mm	85%	0cm	-0.15°C	0mm	0.09kPa	1.8m/s
19:00 ☾	-2.5°C	0mm	85%	0cm	-0.23°C	0mm	0.09kPa	2m/s
20:00 ☾	-2.3°C	0.003mm	86%	0cm	-0.24°C	0mm	0.09kPa	2m/s
21:00 ☾	-2.2°C	0.007mm	87%	0cm	-0.25°C	0mm	0.08kPa	2m/s
22:00 ☾	-2°C	0.01mm	88%	0cm	-0.26°C	0mm	0.07kPa	2m/s
23:00 ☾	-1.6°C	0.02mm	89%	0cm	-0.08°C	0.04mm	0.06kPa	2.1m/s
Wed, Feb 11 Sunrise 07:16 Sunset 17:22
24:00 ☾	-1.3°C	0.04mm	90%	0cm	0.1°C	0.08mm	0.06kPa	2.2m/s
01:00 ☾	-0.9°C	0.05mm	92%	0cm	0.29°C	0.13mm	0.05kPa	2.3m/s
02:00 ☾	-0.2°C	0.08mm	93%	0.04cm	0.83°C	0.19mm	0.05kPa	2.5m/s
03:00 ☾	0.5°C	0.1mm	94%	0.09cm	1.4°C	0.25mm	0.04kPa	2.8m/s
04:00 ☾	1.2°C	0.13mm	95%	0.13cm	1.9°C	0.31mm	0.04kPa	3m/s
05:00 ☾	1.4°C	0.1mm	93%	0.11cm	2.4°C	0.4mm	0.05kPa	2.8m/s
06:00 ☾	1.6°C	0.08mm	92%	0.08cm	2.8°C	0.48mm	0.06kPa	2.6m/s
07:00 ☾	1.8°C	0.05mm	91%	0.06cm	3.2°C	0.56mm	0.07kPa	2.4m/s

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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