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 9 upcoming opportunity windows in the next 10 days.

More Fog Hunter in Finnish Lapland

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Rule Fog Hunter

Rovaniemi - Fog Hunter - Finnish Lapland

Rovaniemi, Lapland, Finland

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions

Fog Probability

100%

Dewpoint Spread0.5°C

Visibility868 (Fog)

Relative Humidity96%

Wind Speed0.7m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

Next opportunity

Dense Fog (lingering)

Rovaniemi

Today · 14:00–15:00 · 1h window

High confidence

83%

🌫️Fog Probability100%

Dewpoint Spread: 0.5°C

Visibility: 966 (Fog)

Relative Humidity: 96%

Wind Speed: 0.9m/s (calm conditions)

Dense Fog (lingering) at Sunset

Rovaniemi

Today · 15:00–18:00

🌫️Fog Probability:100%

High

Dense Fog (lingering)

Rovaniemi

Today · 21:00–05:00

🌫️Fog Probability:97.2-100%

High

Dense Fog (lingering)

Rovaniemi

Tomorrow · 11:00–15:00

🌫️Fog Probability:98.6-100%

High

Dense Fog (lingering) at Sunset

Rovaniemi

Tomorrow · 15:00–16:00

🌫️Fog Probability:100%

High

Dense Fog (lingering)

Rovaniemi

Tomorrow · 21:00–23:00

🌫️Fog Probability:100%

High

Dense Fog (lingering)

Rovaniemi

Thu, Feb 19 · 03:00–07:00

🌫️Fog Probability:100%

Medium

+2 more windows in the next 10 days

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72-hour requirements breakdown

What passed or failed, hour by hour

24matching hours in the next 95 hoursJump to next match

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
Mon, Feb 16
15:00	0%	1.1°C	24134m	5m/s
16:00	0%	1.2°C	24135m	4.8m/s
17:00	0%	1.1°C	23993m	4.6m/s
18:00	0%	1.1°C	24135m	4.8m/s
19:00	0%	1.1°C	24134m	4.5m/s
20:00	0%	1.1°C	23982m	4.5m/s
21:00	36%	1°C	21811m	4.5m/s
22:00	0%	1°C	21815m	4.5m/s
23:00	0%	1°C	21474m	4.3m/s
Tue, Feb 17
24:00	40%	0.7°C	11151m	4.1m/s
01:00	45%	0.7°C	8671m	4m/s
02:00	65%	0.7°C	8503m	3.8m/s
03:00	68%	0.5°C	7849m	3.9m/s
04:00	68%	0.5°C	7439m	3.7m/s
05:00	68%	0.6°C	8177m	3.1m/s
06:00	68%	0.6°C	9021m	2.7m/s
07:00	68%	0.5°C	9593m	2.6m/s
08:00	71%	0.5°C	8800m	2.7m/s
09:00	68%	0.6°C	7692m	2.9m/s
10:00	65%	0.7°C	8876m	2.9m/s
11:00	68%	0.6°C	8767m	2.3m/s
12:00	81%	0.7°C	8239m	1.7m/s
13:00	88%	0.8°C	4561m	1.5m/s
14:00	100%	0.5°C	966m	0.91m/s
15:00	100%	0.5°C	868m	0.66m/s
16:00	100%	0.3°C	995m	0.2m/s
17:00	100%	0.2°C	387m	0.61m/s
18:00	58%	0.3°C	312m	0.66m/s
19:00	60%	0.2°C	688m	0.69m/s
20:00	60%	0.2°C	473m	0.79m/s
21:00	100%	0.2°C	455m	0.57m/s
22:00	100%	0.1°C	888m	0.53m/s
23:00	100%	0.1°C	818m	0.85m/s
Wed, Feb 18
24:00	100%	0°C	1123m	1.1m/s
01:00	100%	0°C	1621m	1.2m/s
02:00	97%	0°C	2076m	1.1m/s
03:00	97%	0°C	2332m	0.88m/s
04:00	97%	0°C	2523m	0.54m/s
05:00	97%	0°C	3047m	0.24m/s
06:00	97%	0°C	3895m	0.31m/s
07:00	97%	0°C	4225m	0.42m/s
08:00	97%	0°C	4733m	0.63m/s
09:00	86%	0°C	5018m	0.78m/s
10:00	97%	0°C	3094m	0.53m/s
11:00	100%	0.1°C	1791m	0.13m/s
12:00	100%	0.5°C	1183m	0.17m/s
13:00	99%	0.6°C	1275m	0.12m/s
14:00	99%	0.7°C	1133m	0.2m/s
15:00	100%	0.7°C	228m	0.14m/s
16:00	58%	0.5°C	223m	0.29m/s
17:00	58%	0.3°C	257m	0.55m/s
18:00	58%	0.4°C	249m	0.71m/s
19:00	58%	0.3°C	213m	0.83m/s
20:00	58%	0.3°C	232m	0.64m/s
21:00	100%	0.2°C	332m	0.53m/s
22:00	100%	0.2°C	438m	0.37m/s
23:00	58%	0.3°C	468m	0.47m/s
Thu, Feb 19
24:00	58%	0.3°C	634m	0.76m/s
01:00	58%	0.3°C	746m	1m/s
02:00	60%	0.2°C	929m	1.3m/s
03:00	100%	0.2°C	767m	1.3m/s
04:00	100%	0.2°C	843m	1.6m/s
05:00	100%	0.1°C	1176m	1.5m/s
06:00	100%	0.1°C	1206m	1.5m/s
07:00	100%	0°C	1851m	1.6m/s
08:00	97%	0°C	4056m	1.5m/s
09:00	97%	0°C	4682m	1.4m/s
10:00	97%	0°C	3999m	1.4m/s
11:00	86%	0°C	5443m	1.2m/s
12:00	83%	0.4°C	8224m	1.1m/s
13:00	68%	0.7°C	11031m	0.96m/s
14:00	60%	0.7°C	18187m	1.1m/s
15:00	67%	0.3°C	21817m	1.1m/s
16:00	86%	0.1°C	7454m	1.3m/s
17:00	86%	0°C	6643m	1.4m/s
18:00	86%	0°C	6541m	1.4m/s
19:00	86%	0°C	6542m	1.4m/s
20:00	86%	0°C	6541m	1.3m/s
21:00	86%	0°C	6472m	1.5m/s
22:00	86%	0°C	6403m	1.6m/s
23:00	86%	0°C	6334m	1.7m/s
Fri, Feb 20
24:00	86%	0°C	6324m	1.7m/s
01:00	86%	0°C	6314m	1.7m/s
02:00	86%	0°C	6304m	1.7m/s
03:00	78%	0.1°C	11898m	1.5m/s
04:00	67%	0.3°C	17491m	1.2m/s
05:00	67%	0.4°C	23084m	1m/s
06:00	64%	0.5°C	23434m	0.87m/s
07:00	60%	0.8°C	23785m	0.73m/s
08:00	0%	1°C	24135m	0.6m/s
09:00	60%	0.6°C	23943m	0.48m/s
10:00	67%	0.3°C	23750m	0.36m/s
11:00	69%	0°C	23558m	0.24m/s
12:00	69%	0°C	17886m	0.44m/s
13:00	78%	0°C	12214m	0.65m/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
Tue, Feb 17 Sunrise 08:18 Sunset 16:44
15:00	-9.9°C	0.04mm	96%	0.04cm	-9.4°C	0.06mm	0.01kPa	3m/s
16:00	-11°C	0.03mm	98%	0.03cm	-11°C	0.06mm	0.01kPa	0.21m/s
17:00 ☾	-13°C	0.08mm	98%	0.08cm	-13°C	0.13mm	0kPa	0.51m/s
18:00 ☾	-14°C	0.09mm	98%	0.09cm	-14°C	0.25mm	0kPa	0.63m/s
19:00 ☾	-15°C	0.05mm	98%	0.05cm	-15°C	0.31mm	0kPa	0.7m/s
20:00 ☾	-15°C	0.06mm	98%	0.06cm	-15°C	0.38mm	0kPa	0.71m/s
21:00 ☾	-16°C	0.07mm	98%	0.07cm	-16°C	0.06mm	0kPa	0.52m/s
22:00 ☾	-17°C	0.03mm	99%	0.03cm	-17°C	0.13mm	0kPa	0.51m/s
23:00 ☾	-17°C	0.04mm	99%	0.04cm	-17°C	0.13mm	0kPa	0.82m/s
Wed, Feb 18 Sunrise 08:18 Sunset 16:44
24:00 ☾	-18°C	0.02mm	99%	0.02cm	-18°C	0.19mm	0kPa	1m/s
01:00 ☾	-19°C	0.02mm	100%	0cm	-20°C	0.19mm	0kPa	1.1m/s
02:00 ☾	-21°C	0.01mm	100%	0cm	-21°C	0.19mm	0kPa	1m/s
03:00 ☾	-23°C	0.01mm	100%	0cm	-23°C	0mm	0kPa	0.8m/s
04:00 ☾	-24°C	0.01mm	100%	0cm	-24°C	0mm	0kPa	0.53m/s
05:00 ☾	-24°C	0.01mm	100%	0cm	-24°C	0mm	0kPa	0.2m/s
06:00 ☾	-25°C	0.01mm	100%	0cm	-25°C	0.06mm	0kPa	0.31m/s
07:00 ☾	-26°C	0.01mm	100%	0cm	-26°C	0.06mm	0kPa	0.4m/s
08:00 ☾	-26°C	0.01mm	100%	0cm	-26°C	0.06mm	0kPa	0.6m/s
09:00	-26°C	0mm	100%	0cm	-26°C	0mm	0kPa	0.71m/s
10:00	-22°C	0.01mm	100%	0cm	-22°C	0mm	0kPa	0.52m/s
11:00	-19°C	0.02mm	99%	0cm	-18°C	0mm	0kPa	0.21m/s
12:00	-17°C	0.03mm	96%	0.03cm	-16°C	0.06mm	0.01kPa	0.31m/s
13:00	-15°C	0.03mm	95%	0.03cm	-15°C	0.06mm	0.01kPa	0.6m/s
14:00	-14°C	0.03mm	94%	0.03cm	-14°C	0.13mm	0.01kPa	0.4m/s
15:00	-14°C	0.15mm	95%	0.15cm	-13°C	0.06mm	0.01kPa	0.6m/s
16:00	-13°C	0.16mm	96%	0.16cm	-13°C	0.25mm	0.01kPa	0.22m/s
17:00 ☾	-13°C	0.13mm	97%	0.13cm	-13°C	0.38mm	0.01kPa	0.5m/s
18:00 ☾	-13°C	0.13mm	97%	0.13cm	-13°C	0.5mm	0.01kPa	0.6m/s
19:00 ☾	-13°C	0.15mm	97%	0.15cm	-13°C	0.63mm	0.01kPa	0.71m/s
20:00 ☾	-13°C	0.14mm	97%	0.14cm	-13°C	0.81mm	0.01kPa	0.61m/s
21:00 ☾	-13°C	0.1mm	98%	0.1cm	-12°C	0.13mm	0.01kPa	0.51m/s
22:00 ☾	-13°C	0.07mm	98%	0.07cm	-13°C	0.19mm	0.01kPa	0.4m/s
23:00 ☾	-13°C	0.07mm	98%	0.07cm	-13°C	0.25mm	0.01kPa	1.2m/s
Thu, Feb 19 Sunrise 08:14 Sunset 16:48
24:00 ☾	-13°C	0.05mm	98%	0.05cm	-13°C	0.31mm	0.01kPa	1.7m/s
01:00 ☾	-14°C	0.05mm	98%	0.05cm	-13°C	0.38mm	0kPa	1.7m/s
02:00 ☾	-15°C	0.04mm	98%	0.04cm	-14°C	0.44mm	0kPa	1.9m/s
03:00 ☾	-16°C	0.04mm	98%	0.04cm	-15°C	0.06mm	0kPa	1.2m/s
04:00 ☾	-16°C	0.04mm	99%	0.04cm	-16°C	0.06mm	0kPa	2.2m/s
05:00 ☾	-17°C	0.03mm	99%	0cm	-17°C	0.13mm	0kPa	2.3m/s
06:00 ☾	-18°C	0.02mm	99%	0cm	-18°C	0.13mm	0kPa	2.1m/s
07:00 ☾	-20°C	0.01mm	100%	0cm	-20°C	0.13mm	0kPa	1.6m/s
08:00 ☾	-22°C	0.01mm	100%	0cm	-22°C	0.19mm	0kPa	1.4m/s
09:00	-25°C	0.01mm	100%	0cm	-25°C	0mm	0kPa	1.3m/s
10:00	-22°C	0.01mm	100%	0cm	-22°C	0mm	0kPa	2.1m/s
11:00	-19°C	0.01mm	100%	0cm	-19°C	0mm	0kPa	2m/s
12:00	-17°C	0mm	97%	0cm	-16°C	0mm	0.01kPa	2m/s
13:00	-15°C	0mm	94%	0cm	-15°C	0mm	0.01kPa	1.7m/s
14:00	-15°C	0mm	94%	0cm	-14°C	0mm	0.01kPa	1.7m/s
15:00	-15°C	0mm	97%	0cm	-15°C	0mm	0.01kPa	1.4m/s
16:00	-18°C	0mm	98%	0cm	-18°C	0mm	0kPa	1.2m/s
17:00 ☾	-21°C	0mm	100%	0cm	-21°C	0mm	0kPa	1.3m/s
18:00 ☾	-23°C	0mm	100%	0cm	-23°C	0mm	0kPa	1.2m/s
19:00 ☾	-24°C	0mm	100%	0cm	-24°C	0mm	0kPa	1.2m/s
20:00 ☾	-25°C	0mm	100%	0cm	-25°C	0mm	0kPa	1.1m/s
21:00 ☾	-25°C	0mm	100%	0cm	-25°C	0mm	0kPa	1.3m/s
22:00 ☾	-26°C	0mm	100%	0cm	-26°C	0mm	0kPa	1.4m/s
23:00 ☾	-26°C	0mm	100%	0cm	-26°C	0mm	0kPa	1.5m/s
Fri, Feb 20 Sunrise 08:10 Sunset 16:52
24:00 ☾	-26°C	0mm	100%	0cm	-26°C	0mm	0kPa	1.5m/s
01:00 ☾	-26°C	0mm	100%	0cm	-26°C	0mm	0kPa	1.5m/s
02:00 ☾	-26°C	0mm	100%	0cm	-26°C	0mm	0kPa	1.5m/s
03:00 ☾	-24°C	0mm	99%	0cm	-24°C	0mm	0kPa	1.5m/s
04:00 ☾	-22°C	0mm	98%	0cm	-21°C	0mm	0kPa	1.5m/s
05:00 ☾	-19°C	0mm	97%	0cm	-19°C	0mm	0kPa	1.5m/s
06:00 ☾	-18°C	0mm	95%	0cm	-17°C	0mm	0.01kPa	1.3m/s
07:00 ☾	-17°C	0mm	94%	0cm	-16°C	0mm	0.01kPa	1.1m/s
08:00 ☾	-16°C	0mm	92%	0cm	-15°C	0mm	0.02kPa	0.86m/s
09:00	-18°C	0mm	95%	0cm	-17°C	0mm	0.01kPa	0.64m/s
10:00	-19°C	0mm	97%	0cm	-19°C	0mm	0kPa	0.42m/s
11:00	-21°C	0mm	100%	0cm	-21°C	0mm	0kPa	0.21m/s
12:00	-23°C	0mm	100%	0cm	-23°C	0mm	0kPa	0.41m/s
13:00	-24°C	0mm	100%	0cm	-24°C	0mm	0kPa	0.61m/s
14:00	-25°C	0mm	100%	0cm	-26°C	0mm	0kPa	0.81m/s

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

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