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Rule Fog Hunter

Fog Hunter Forecast for Mount Aso, Kyushu

Aso, Kumamoto, Japan

From Aso's rim, layer the inhabited caldera floor, central cones and Nakadake crater; use roads or grassland fences to convey the basin's scale.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread5.7°C
Visibility23535 (Clear)
Relative Humidity71%
Wind Speed0.7m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (74-hour forecast)

  • Fog Probability100% of hours

How this forecast is evaluated

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

Explore Fog Hunter conditions across Kyushu →

Recorded match history

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

Last 30 days
10
recorded matching windows · 71% average confidence
Last 90 days
50
recorded matching windows · 83% average confidence
Last 365 days
51
recorded matching windows · 84% average confidence
Most frequent recorded start hour

04:00 local time, shared by 18 of 51 matches recorded in the last 365 days.

Most represented month

July, with 23 of 51 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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74-hour requirements breakdown

When available, the detailed table below covers only the stated 74-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 74 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Asia/Tokyo
Fog Probability
≥ 75.0%
Tue, Aug 18
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Aug 19
24:000%
01:0053%
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%
Thu, Aug 20
24:000%
01:0053%
02:0053%
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%
Fri, Aug 21
24:0053%
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%
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
Asia/Tokyo
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
Tue, Aug 18 Sunrise 05:40 Sunset 18:57
17:00
3% 22°C 0mm 71% 0cm 24° 27°C 0.19mm 1kPa 23535m 0.92m/s 0.66m/s
18:00
0% 22°C 0mm 79% 0cm 11° 25°C 0.31mm 0.69kPa 24135m 0.55m/s 0.46m/s
19:00 ☾
0% 21°C 0mm 84% 0cm -0.93° 23°C 0.44mm 0.46kPa 24134m 1.2m/s 1.2m/s
20:00 ☾
0% 21°C 0mm 88% 0cm -13° 23°C 0.5mm 0.32kPa 24134m 1.3m/s 1.4m/s
21:00 ☾
0% 21°C 0mm 90% 0cm -24° 22°C 0.56mm 0.27kPa 24135m 1.4m/s 1.5m/s
22:00 ☾
1% 20°C 0mm 92% 0cm -33° 22°C 0mm 0.22kPa 24134m 1.3m/s 1.4m/s
23:00 ☾
2% 20°C 0mm 95% 0cm -40° 21°C 0mm 0.13kPa 24135m 1.5m/s 1.7m/s
Wed, Aug 19 Sunrise 05:40 Sunset 18:57
24:00 ☾
3% 19°C 0mm 95% 0cm -44° 20°C 0mm 0.11kPa 24135m 1.7m/s 1.9m/s
01:00 ☾
4% 19°C 0mm 95% 0cm -43° 20°C 0mm 0.11kPa 24134m 1.6m/s 1.8m/s
02:00 ☾
6% 18°C 0mm 94% 0cm -38° 19°C 0mm 0.14kPa 24135m 1.6m/s 1.8m/s
03:00 ☾
7% 18°C 0mm 92% 0cm -30° 19°C 0mm 0.17kPa 24135m 1.7m/s 2m/s
04:00 ☾
19% 17°C 0mm 91% 0cm -20° 18°C 0mm 0.18kPa 24134m 1.7m/s 2m/s
05:00 ☾
32% 17°C 0mm 91% 0cm -9° 19°C 0mm 0.18kPa 24134m 1.8m/s 2.1m/s
06:00 ☾
44% 17°C 0mm 92% 0cm 3.2° 19°C 0mm 0.18kPa 24134m 1.9m/s 2.2m/s
07:00 ☾
45% 19°C 0mm 88% 0cm 15° 21°C 0mm 0.29kPa 24135m 2.7m/s 1.9m/s
08:00 ☾
47% 19°C 0mm 74% 0cm 28° 24°C 0mm 0.78kPa 24134m 2.4m/s 1.7m/s
09:00
48% 19°C 0mm 64% 0cm 40° 27°C 0mm 1.3kPa 24135m 2.8m/s 1.6m/s
10:00
51% 19°C 0mm 56% 0cm 52° 29°C 0mm 1.7kPa 24135m 3.3m/s 1.9m/s
11:00
55% 18°C 0mm 50% 0cm 63° 30°C 0mm 2.1kPa 24134m 3.3m/s 2.2m/s
12:00
58% 18°C 0mm 46% 0cm 69° 31°C 0mm 2.5kPa 24135m 3.4m/s 2.5m/s
13:00
55% 18°C 0mm 43% 0cm 68° 32°C 0mm 2.8kPa 24134m 3m/s 2.7m/s
14:00
52% 18°C 0mm 42% 0cm 59° 33°C 0mm 2.9kPa 24135m 3m/s 3.3m/s
15:00
49% 19°C 0mm 47% 0cm 48° 32°C 0mm 2.5kPa 24134m 2.9m/s 3.8m/s
16:00
35% 20°C 0mm 58% 0cm 36° 29°C 0mm 1.7kPa 24134m 3.4m/s 2.8m/s
17:00
20% 22°C 0mm 71% 0cm 23° 27°C 0.13mm 1kPa 23425m 2.4m/s 1.6m/s
18:00
6% 22°C 0mm 80% 0cm 11° 26°C 0.38mm 0.66kPa 20433m 1.7m/s 1.7m/s
19:00 ☾
8% 21°C 0mm 85% 0cm -1.2° 24°C 0.5mm 0.44kPa 23740m 1.7m/s 1.8m/s
20:00 ☾
9% 21°C 0mm 88% 0cm -13° 23°C 0.56mm 0.33kPa 24134m 1.7m/s 1.8m/s
21:00 ☾
11% 21°C 0mm 92% 0cm -24° 22°C 0.56mm 0.22kPa 24135m 1.7m/s 2m/s
22:00 ☾
28% 21°C 0mm 94% 0cm -34° 22°C 0mm 0.14kPa 24134m 1.8m/s 2.1m/s
23:00 ☾
46% 21°C 0mm 95% 0cm -41° 21°C 0mm 0.12kPa 24135m 2.1m/s 2.1m/s
Thu, Aug 20 Sunrise 05:41 Sunset 18:56
24:00 ☾
63% 20°C 0mm 95% 0cm -44° 21°C 0mm 0.12kPa 24134m 1.7m/s 2m/s
01:00 ☾
61% 20°C 0mm 95% 0cm -43° 21°C 0mm 0.11kPa 24134m 2.2m/s 2.1m/s
02:00 ☾
58% 20°C 0mm 95% 0cm -38° 21°C 0mm 0.11kPa 24135m 2.2m/s 2m/s
03:00 ☾
56% 20°C 0mm 95% 0cm -30° 21°C 0mm 0.12kPa 24134m 1.7m/s 1.9m/s
04:00 ☾
53% 20°C 0mm 95% 0cm -20° 21°C 0mm 0.12kPa 24135m 1.6m/s 1.8m/s
05:00 ☾
51% 20°C 0mm 95% 0cm -9.1° 21°C 0mm 0.12kPa 24135m 1.6m/s 1.8m/s
06:00 ☾
48% 20°C 0mm 95% 0cm 3.1° 21°C 0mm 0.12kPa 24134m 2.1m/s 2.1m/s
07:00 ☾
46% 21°C 0mm 92% 0cm 15° 22°C 0mm 0.23kPa 24135m 2.3m/s 1.7m/s
08:00 ☾
45% 21°C 0mm 81% 0cm 28° 25°C 0mm 0.59kPa 24134m 2.1m/s 1.6m/s
09:00
43% 21°C 0mm 67% 0cm 40° 27°C 0mm 1.2kPa 24135m 1.7m/s 1.3m/s
10:00
44% 20°C 0mm 58% 0cm 52° 30°C 0mm 1.8kPa 24135m 1.4m/s 1.1m/s
11:00
44% 20°C 0mm 52% 0cm 63° 31°C 0.06mm 2.2kPa 24135m 1.3m/s 1.1m/s
12:00
45% 21°C 0mm 54% 0cm 69° 32°C 0.69mm 2.1kPa 23692m 1.1m/s 0.23m/s
13:00
35% 22°C 0.01mm 63% 0cm 67° 30°C 1.3mm 1.5kPa 11377m 1.6m/s 2.2m/s
14:00
25% 23°C 0.01mm 85% 0cm 59° 26°C 2.4mm 0.52kPa 6639m 3.4m/s 2.4m/s
15:00
15% 23°C 0mm 85% 0cm 48° 26°C 3.8mm 0.5kPa 20915m 2.5m/s 1.8m/s
16:00
12% 23°C 0mm 83% 0cm 36° 26°C 0.94mm 0.58kPa 24134m 2m/s 1.6m/s
17:00
10% 23°C 0mm 82% 0cm 23° 26°C 1.6mm 0.59kPa 24134m 2.5m/s 1.8m/s
18:00
7% 23°C 0mm 86% 0cm 11° 25°C 1.9mm 0.44kPa 23652m 2.2m/s 1.9m/s
19:00 ☾
7% 22°C 0mm 90% 0cm -1.5° 23°C 2.1mm 0.3kPa 24135m 1.7m/s 1.9m/s
20:00 ☾
6% 21°C 0mm 91% 0cm -13° 23°C 2.1mm 0.26kPa 24135m 1.7m/s 1.8m/s
21:00 ☾
6% 21°C 0mm 90% 0cm -24° 22°C 2.1mm 0.26kPa 24135m 1.4m/s 1.5m/s
22:00 ☾
12% 21°C 0mm 92% 0cm -34° 22°C 1.4mm 0.2kPa 24135m 1.5m/s 1.6m/s
23:00 ☾
17% 21°C 0mm 94% 0cm -41° 22°C 0.69mm 0.15kPa 24135m 1.5m/s 1.6m/s
Fri, Aug 21 Sunrise 05:42 Sunset 18:55
24:00 ☾
23% 20°C 0mm 96% 0cm -45° 21°C 0mm 0.1kPa 24135m 1.5m/s 1.7m/s
01:00 ☾
22% 21°C 0mm 88% 0cm -44° 23°C 0mm 0.35kPa 24135m 1.6m/s 1.5m/s
02:00 ☾
22% 21°C 0mm 79% 0cm -39° 25°C 0mm 0.66kPa 24135m 1.7m/s 1.4m/s
03:00 ☾
21% 21°C 0mm 71% 0cm -31° 27°C 0mm 1kPa 24135m 1.7m/s 1.2m/s
04:00 ☾
25% 21°C 0mm 63% 0cm -21° 29°C 0.15mm 1.4kPa 24135m 1.7m/s 1.2m/s
05:00 ☾
28% 20°C 0mm 55% 0cm -9.3° 30°C 0.29mm 1.9kPa 24135m 1.7m/s 1.2m/s
06:00 ☾
32% 19°C 0mm 47% 0cm 2.9° 32°C 0.44mm 2.5kPa 24135m 1.7m/s 1.2m/s
07:00 ☾
32% 21°C 0.04mm 55% 0cm 15° 31°C 0.81mm 2kPa 23220m 2m/s 1.5m/s
08:00 ☾
31% 22°C 0.09mm 62% 0cm 28° 30°C 1.2mm 1.6kPa 22306m 2.4m/s 1.8m/s
09:00
31% 22°C 0.13mm 70% 0cm 40° 28°C 1.6mm 1.1kPa 21392m 2.8m/s 2m/s
10:00
30% 23°C 0.13mm 76% 0cm 52° 27°C 1.6mm 0.85kPa 20997m 2.2m/s 1.7m/s
11:00
28% 23°C 0.12mm 82% 0cm 62° 26°C 1.7mm 0.59kPa 20602m 1.7m/s 1.4m/s
12:00
27% 23°C 0.12mm 88% 0cm 69° 25°C 1.8mm 0.36kPa 20208m 1.1m/s 1.1m/s
13:00
21% 22°C 0.08mm 90% 0cm 67° 24°C 1.9mm 0.3kPa 21517m 1.2m/s 1.2m/s
14:00
16% 22°C 0.04mm 92% 0cm 59° 23°C 2mm 0.24kPa 22826m 1.3m/s 1.3m/s
15:00
10% 22°C 0mm 93% 0cm 48° 23°C 2.1mm 0.19kPa 24135m 1.4m/s 1.4m/s
16:00
8% 22°C 0mm 94% 0cm 36° 22°C 1.4mm 0.16kPa 24135m 1.3m/s 1.4m/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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