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 6 upcoming opportunity windows in the next 10 days.

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Rule Fog Hunter

Passo Rolle - Fog Hunter - Dolomites

Passo Rolle, Trentino-Alto Adige, Italy

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions

Fog Probability

76%

Dewpoint Spread0.8°C

Visibility8749 (Moderate)

Relative Humidity94%

Wind Speed1.7m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Rome

Next opportunity

Dense Fog (lingering)

Passo Rolle

Tomorrow · 20:00–22:00 · 2h window

High confidence

90%

🌫️Fog Probability100%

Dewpoint Spread: 0.3°C

Visibility: 756 (Fog)

Relative Humidity: 98%

Wind Speed: 0.3m/s (calm conditions)

Dense Fog (lingering)

Passo Rolle

Tue, Feb 10 · 02:00–03:00

🌫️Fog Probability:100%

High

Dense Fog (lingering) at Sunrise

Passo Rolle

Tue, Feb 10 · 08:00–09:00

🌫️Fog Probability:91.7%

Medium

Dense Fog (lingering)

Passo Rolle

Wed, Feb 11 · 19:00–24:00

🌫️Fog Probability:97.2-100%

Medium

Dense Fog (lingering)

Passo Rolle

Fri, Feb 13 · 15:00–16:00

🌫️Fog Probability:92.9%

Medium

Dense Fog (lingering) at Sunset

Passo Rolle

Fri, Feb 13 · 16:00–17:00

🌫️Fog Probability:100%

Medium

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the dramatic conditions that make the Dolomites one of the world's most photogenic mountain ranges. We combine fog probability, cloud cover, and visibility data to predict when alpenglow, valley fog, and dramatic weather create ideal shooting conditions.

The Dolomites' distinctive pale limestone peaks catch sunrise and sunset light in ways no other mountains can match. These UNESCO World Heritage mountains rise dramatically from green alpine meadows and fairy-tale valleys, creating compositions that have drawn photographers for generations.

What makes the Dolomites special for photography:

Alpenglow - Pale limestone turns pink, orange, and gold at sunrise and sunset
Valley fog - Temperature inversions create ethereal mist in the valleys while peaks glow above
Iconic locations - Tre Cime, Seceda, and Santa Maddalena church are bucket-list compositions
Alpine meadows - Alpe di Siusi offers Europe's largest high-altitude meadow with mountain backdrops

Best conditions occur at dawn and dusk, with valley fog most reliable in autumn. The Dolomites' vertical relief means conditions can vary dramatically between valley and summit—our forecast helps you choose the right elevation for the best conditions.

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72-hour requirements breakdown

What passed or failed, hour by hour

4matching hours in the next 72 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/Rome	Fog Probability ≥ 85.0%	Dewpoint Spread ≤ 2.0°C	Visibility ≤ 3000.0m	Wind Speed ≤ 2.0m/s
Sun, Feb 8
07:00	60%	0.8°C	17221m	1.6m/s
08:00	76%	0.8°C	8749m	1.7m/s
09:00	0%	1.1°C	24134m	0.86m/s
10:00	0%	1.6°C	24134m	0.04m/s
11:00	0%	1.4°C	14356m	0.96m/s
12:00	0%	1.9°C	11498m	1.3m/s
13:00	0%	2.3°C	23151m	1.1m/s
14:00	0%	2°C	22616m	0.57m/s
15:00	0%	1.8°C	19927m	0.81m/s
16:00	0%	2.3°C	22165m	0.98m/s
17:00	0%	1.1°C	23246m	0.65m/s
18:00	60%	1°C	24134m	0.34m/s
19:00	0%	1.1°C	24135m	0.61m/s
20:00	0%	1.1°C	24135m	1.1m/s
21:00	0%	1.2°C	24134m	1.8m/s
22:00	0%	1.2°C	24134m	2.1m/s
23:00	0%	1.2°C	24135m	2.1m/s
Mon, Feb 9
24:00	0%	1.2°C	24135m	2.1m/s
01:00	0%	1.2°C	24135m	2.1m/s
02:00	0%	1.3°C	24134m	2.1m/s
03:00	0%	1.2°C	24134m	2m/s
04:00	0%	1.3°C	24135m	2.1m/s
05:00	0%	1.3°C	24135m	2m/s
06:00	0%	1.3°C	24135m	1.9m/s
07:00	0%	1.4°C	24134m	2m/s
08:00	0%	1.3°C	24134m	2.1m/s
09:00	0%	1.6°C	24135m	1m/s
10:00	0%	2°C	24135m	0.34m/s
11:00	0%	1.3°C	24053m	1m/s
12:00	61%	0.9°C	6282m	1.2m/s
13:00	67%	1°C	2525m	1.3m/s
14:00	70%	1°C	3619m	1.4m/s
15:00	77%	0.8°C	4217m	1.3m/s
16:00	44%	0.7°C	3784m	1.3m/s
17:00	49%	0.3°C	3679m	1.1m/s
18:00	46%	0.6°C	2913m	0.55m/s
19:00	60%	0.2°C	910m	0.32m/s
20:00	100%	0.3°C	756m	0.28m/s
21:00	100%	0.2°C	665m	0.33m/s
22:00	60%	0.3°C	488m	0.31m/s
23:00	60%	0.2°C	827m	0.29m/s
Tue, Feb 10
24:00	60%	0.2°C	592m	0.55m/s
01:00	58%	0.3°C	365m	0.73m/s
02:00	100%	0.3°C	312m	0.94m/s
03:00	58%	0.3°C	257m	0.95m/s
04:00	58%	0.3°C	306m	0.97m/s
05:00	58%	0.4°C	566m	0.99m/s
06:00	53%	0.3°C	1718m	0.92m/s
07:00	47%	0.5°C	3000m	0.8m/s
08:00	92%	0.6°C	2839m	0.81m/s
09:00	0%	1.2°C	12465m	0.57m/s
10:00	0%	1.3°C	12129m	0.88m/s
11:00	0%	1.4°C	9000m	1.1m/s
12:00	0%	1.7°C	8026m	1.1m/s
13:00	67%	1.1°C	2951m	1m/s
14:00	0%	1.2°C	9281m	0.98m/s
15:00	0%	1.3°C	15610m	0.94m/s
16:00	0%	1.4°C	21940m	0.9m/s
17:00	0%	1.2°C	20439m	0.98m/s
18:00	0%	1.1°C	18938m	1.1m/s
19:00	0%	1.1°C	17437m	1.1m/s
20:00	60%	0.8°C	15135m	1.1m/s
21:00	72%	0.6°C	12833m	1.1m/s
22:00	75%	0.3°C	10531m	1.1m/s
23:00	75%	0.4°C	13820m	1m/s
Wed, Feb 11
24:00	67%	0.5°C	17109m	0.92m/s
01:00	64%	0.5°C	20397m	0.82m/s
02:00	60%	0.9°C	21643m	1m/s
03:00	0%	1.2°C	22889m	1.2m/s
04:00	0%	1.6°C	24135m	1.4m/s
05:00	0%	1.5°C	18290m	1.3m/s
06:00	0%	1.4°C	12445m	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/Rome	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 07:27 Sunset 17:27
08:00	-5.9°C	0mm	94%	0cm	-5.1°C	0mm	0.02kPa	1.4m/s
09:00	-4°C	0mm	92%	0cm	-2.9°C	0mm	0.04kPa	0.81m/s
10:00	-2.5°C	0mm	89%	0cm	-0.94°C	0mm	0.06kPa	0.61m/s
11:00	-1.8°C	0mm	90%	0.02cm	-0.4°C	0mm	0.06kPa	1m/s
12:00	-2.1°C	0.01mm	88%	0.04cm	-0.25°C	0.06mm	0.07kPa	1.3m/s
13:00	-2.7°C	0.01mm	84%	0cm	-0.38°C	0.06mm	0.09kPa	1.1m/s
14:00	-2.5°C	0.01mm	86%	0cm	-0.48°C	0mm	0.08kPa	0.4m/s
15:00	-2.1°C	0mm	87%	0.02cm	-0.29°C	0mm	0.08kPa	0.7m/s
16:00	-2.5°C	0mm	84%	0cm	-0.18°C	0.06mm	0.09kPa	0.71m/s
17:00	-2.4°C	0mm	92%	0.01cm	-1.3°C	0.06mm	0.04kPa	0.6m/s
18:00 ☾	-3.5°C	0mm	93%	0cm	-2.5°C	0.06mm	0.03kPa	0.5m/s
19:00 ☾	-3.8°C	0mm	92%	0cm	-2.7°C	0.06mm	0.04kPa	0.7m/s
20:00 ☾	-5.8°C	0mm	92%	0cm	-4.7°C	0mm	0.03kPa	1m/s
21:00 ☾	-8°C	0mm	92%	0cm	-6.8°C	0mm	0.03kPa	1.4m/s
22:00 ☾	-8.2°C	0mm	91%	0cm	-7°C	0mm	0.03kPa	1.5m/s
23:00 ☾	-8.5°C	0mm	91%	0cm	-7.3°C	0mm	0.03kPa	1.5m/s
Mon, Feb 9 Sunrise 07:27 Sunset 17:27
24:00 ☾	-8.2°C	0mm	91%	0cm	-7°C	0mm	0.03kPa	1.6m/s
01:00 ☾	-8°C	0mm	91%	0cm	-6.8°C	0mm	0.03kPa	1.6m/s
02:00 ☾	-7.9°C	0mm	91%	0cm	-6.6°C	0mm	0.03kPa	1.6m/s
03:00 ☾	-8°C	0mm	91%	0cm	-6.8°C	0mm	0.03kPa	1.5m/s
04:00 ☾	-8.2°C	0mm	90%	0cm	-6.9°C	0mm	0.03kPa	1.6m/s
05:00 ☾	-8.5°C	0mm	91%	0cm	-7.2°C	0mm	0.03kPa	1.5m/s
06:00 ☾	-9.1°C	0mm	90%	0cm	-7.8°C	0mm	0.03kPa	1.4m/s
07:00 ☾	-9.4°C	0mm	90%	0cm	-8°C	0mm	0.03kPa	1.5m/s
08:00	-9.1°C	0mm	90%	0cm	-7.8°C	0mm	0.03kPa	1.5m/s
09:00	-5.2°C	0mm	89%	0cm	-3.6°C	0mm	0.05kPa	1m/s
10:00	-3.1°C	0mm	87%	0cm	-1.1°C	0mm	0.07kPa	0.5m/s
11:00	-1.8°C	0mm	91%	0cm	-0.55°C	0mm	0.05kPa	0.9m/s
12:00	-1.2°C	0.01mm	94%	0.03cm	-0.33°C	0mm	0.04kPa	1.1m/s
13:00	-1.3°C	0.02mm	93%	0.08cm	-0.3°C	0.06mm	0.04kPa	1.2m/s
14:00	-1.2°C	0.03mm	93%	0.07cm	-0.25°C	0.06mm	0.04kPa	1.3m/s
15:00	-1.1°C	0.01mm	94%	0.08cm	-0.29°C	0.19mm	0.03kPa	1.4m/s
16:00	-1.1°C	0.01mm	95%	0.08cm	-0.39°C	0.25mm	0.03kPa	1.4m/s
17:00	-1.5°C	0.01mm	98%	0.09cm	-1.2°C	0.38mm	0.01kPa	1.4m/s
18:00 ☾	-2.6°C	0.02mm	96%	0cm	-2°C	0.38mm	0.02kPa	0.6m/s
19:00 ☾	-2.4°C	0.04mm	98%	0.06cm	-2.2°C	0.44mm	0.01kPa	0.41m/s
20:00 ☾	-2.6°C	0.06mm	98%	0.07cm	-2.3°C	0.06mm	0.01kPa	0.41m/s
21:00 ☾	-2.8°C	0.06mm	98%	0.07cm	-2.6°C	0.19mm	0.01kPa	0.3m/s
22:00 ☾	-3.2°C	0.07mm	98%	0.08cm	-2.9°C	0.25mm	0.01kPa	0.31m/s
23:00 ☾	-3.9°C	0.05mm	98%	0.06cm	-3.7°C	0.31mm	0.01kPa	0.31m/s
Tue, Feb 10 Sunrise 07:25 Sunset 17:29
24:00 ☾	-4.5°C	0.07mm	98%	0.08cm	-4.3°C	0.38mm	0.01kPa	0.51m/s
01:00 ☾	-5.1°C	0.1mm	98%	0.11cm	-4.8°C	0.5mm	0.01kPa	0.6m/s
02:00 ☾	-5.9°C	0.12mm	98%	0.13cm	-5.6°C	0.13mm	0.01kPa	0.7m/s
03:00 ☾	-5.6°C	0.13mm	98%	0.13cm	-5.3°C	0.31mm	0.01kPa	0.6m/s
04:00 ☾	-5.1°C	0.11mm	98%	0.11cm	-4.8°C	0.44mm	0.01kPa	0.8m/s
05:00 ☾	-5.2°C	0.05mm	98%	0.05cm	-4.8°C	0.5mm	0.01kPa	0.8m/s
06:00 ☾	-5.3°C	0.02mm	98%	0cm	-5°C	0.56mm	0.01kPa	0.8m/s
07:00 ☾	-5.4°C	0.01mm	97%	0cm	-4.9°C	0.56mm	0.01kPa	0.8m/s
08:00	-5.3°C	0.01mm	96%	0cm	-4.7°C	0mm	0.02kPa	0.91m/s
09:00	-3.8°C	0.01mm	92%	0cm	-2.6°C	0mm	0.04kPa	0.8m/s
10:00	-3.5°C	0.01mm	91%	0cm	-2.2°C	0.06mm	0.05kPa	1m/s
11:00	-3.4°C	0.01mm	90%	0cm	-2°C	0.06mm	0.05kPa	1.2m/s
12:00	-3.5°C	0.02mm	88%	0.03cm	-1.8°C	0.06mm	0.06kPa	1.2m/s
13:00	-2.9°C	0.03mm	92%	0.05cm	-1.8°C	0.13mm	0.04kPa	1.2m/s
14:00	-4.5°C	0.02mm	91%	0.03cm	-3.3°C	0.08mm	0.04kPa	1.1m/s
15:00	-6°C	0.01mm	91%	0.02cm	-4.7°C	0.04mm	0.04kPa	1.1m/s
16:00	-7.6°C	0mm	90%	0cm	-6.2°C	0mm	0.04kPa	1m/s
17:00	-7.9°C	0mm	91%	0cm	-6.7°C	0mm	0.03kPa	1.1m/s
18:00 ☾	-8.2°C	0mm	91%	0cm	-7.1°C	0mm	0.03kPa	1.1m/s
19:00 ☾	-8.6°C	0mm	92%	0cm	-7.5°C	0mm	0.03kPa	1.2m/s
20:00 ☾	-8.5°C	0.003mm	94%	0cm	-7.7°C	0mm	0.02kPa	1.2m/s
21:00 ☾	-8.5°C	0.007mm	95%	0cm	-7.9°C	0mm	0.02kPa	1.2m/s
22:00 ☾	-8.5°C	0.01mm	97%	0cm	-8.2°C	0mm	0.01kPa	1.2m/s
23:00 ☾	-8.5°C	0.007mm	97%	0cm	-8.1°C	0mm	0.01kPa	1.1m/s
Wed, Feb 11 Sunrise 07:24 Sunset 17:30
24:00 ☾	-8.5°C	0.003mm	96%	0cm	-8°C	0mm	0.01kPa	1m/s
01:00 ☾	-8.5°C	0mm	96%	0cm	-8°C	0mm	0.01kPa	0.91m/s
02:00 ☾	-7.5°C	0mm	93%	0cm	-6.6°C	0mm	0.02kPa	1.1m/s
03:00 ☾	-6.5°C	0mm	91%	0cm	-5.3°C	0mm	0.04kPa	1.4m/s
04:00 ☾	-5.5°C	0mm	88%	0cm	-3.9°C	0mm	0.05kPa	1.6m/s
05:00 ☾	-4.9°C	0.06mm	89%	0.06cm	-3.4°C	0.08mm	0.05kPa	1.5m/s
06:00 ☾	-4.3°C	0.11mm	90%	0.11cm	-2.9°C	0.17mm	0.05kPa	1.4m/s
07:00 ☾	-3.7°C	0.17mm	90%	0.17cm	-2.3°C	0.25mm	0.05kPa	1.2m/s

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

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