Rule Fire Sky

Fire Sky Forecast for Yufuin, Kyushu

Yufu, Oita, Japan

Mount Yufu rises beyond the wooded shore of Lake Kinrinko. Bridges, reeds, and low lakeside buildings give its reflection scale and distinguish the water from the mountain backdrop.

Currently

Real-time conditions

Fiery Red Sky Potential

Low Cloud Cover0%

Mid Cloud Cover0%

High Cloud Cover0%

Aerosol Optical Depth0.1

Sun Elevation-9.3° (Nautical twilight)

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 (95-hour forecast)

Fiery Red Sky Potential100% of hours
Golden Hour83% of hours
Precipitation Chance22% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fire Sky conditions across Kyushu. The requirements and hourly values below show how those signals apply at Yufuin.

Explore Fire Sky conditions across Kyushu →

Recorded match history

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

Last 30 days

recorded matching windows · 69% average confidence

Last 90 days

recorded matching windows · 69% average confidence

Last 365 days

recorded matching windows · 71% average confidence

Most frequent recorded start hour

19:00 local time, shared by 26 of 49 matches recorded in the last 365 days.

Most represented month

July, with 16 of 49 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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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-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

2matching hours in the next 95 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Asia/Tokyo	Golden Hour Any	Fiery Red Sky Potential ≥ 65.0%	Precipitation Chance ≤ 15.0%	Visibility ≥ 8000.0m
Sat, Aug 22
04:00	✕	31%	0%	24135m
05:00	✓	35%	0%	24135m
06:00	✓	66%	0%	24135m
07:00	✕	26%	0%	24135m
08:00	✕	13%	0%	24134m
09:00	✕	12%	0%	24134m
10:00	✕	32%	5.6%	24135m
11:00	✕	32%	11%	24135m
12:00	✕	34%	17%	24135m
13:00	✕	33%	20%	24134m
14:00	✕	27%	23%	24134m
15:00	✕	17%	26%	24134m
16:00	✕	16%	0%	24134m
17:00	✕	21%	0%	24135m
18:00	✓	17%	0%	24135m
19:00	✓	79%	0%	24134m
20:00	✕	13%	0%	24134m
21:00	✕	5.8%	0%	24134m
22:00	✕	29%	0%	24135m
23:00	✕	29%	0%	24134m
Sun, Aug 23
24:00	✕	29%	0%	24134m
01:00	✕	13%	0%	24135m
02:00	✕	19%	0%	24134m
03:00	✕	5.7%	0%	24134m
04:00	✕	5.1%	0%	24134m
05:00	✓	5.9%	0%	24135m
06:00	✓	29%	0%	24135m
07:00	✕	4.7%	0%	24134m
08:00	✕	4.9%	0%	24134m
09:00	✕	4.9%	0%	24134m
10:00	✕	5.6%	0%	24134m
11:00	✕	4.9%	0%	24134m
12:00	✕	5%	0%	24134m
13:00	✕	5.9%	13%	24134m
14:00	✕	7%	26%	24135m
15:00	✕	12%	39%	24135m
16:00	✕	17%	26%	24135m
17:00	✕	18%	13%	24134m
18:00	✓	18%	0%	24134m
19:00	✓	44%	0%	24134m
20:00	✕	5.4%	0%	24135m
21:00	✕	4.8%	0%	24135m
22:00	✕	5%	0%	24135m
23:00	✕	7.4%	0%	24134m
Mon, Aug 24
24:00	✕	8.3%	0%	24135m
01:00	✕	8.2%	0%	24135m
02:00	✕	8.1%	0%	24134m
03:00	✕	4.9%	0%	24135m
04:00	✕	4.9%	3.1%	24134m
05:00	✓	8.1%	6.2%	24134m
06:00	✓	27%	9.3%	24134m
07:00	✕	5.9%	6.2%	24134m
08:00	✕	9.8%	3.1%	24134m
09:00	✕	5.7%	0%	24134m
10:00	✕	6.3%	0%	24134m
11:00	✕	4.9%	0%	24134m
12:00	✕	4.8%	0%	24135m
13:00	✕	4.8%	0%	24134m
14:00	✕	7.2%	0%	24134m
15:00	✕	17%	0%	24134m
16:00	✕	18%	0%	24134m
17:00	✕	18%	0%	24135m
18:00	✓	18%	0%	24135m
19:00	✓	43%	0%	24134m
20:00	✕	6%	0%	24134m
21:00	✕	4.8%	0%	24134m
22:00	✕	6.1%	0%	24134m
23:00	✕	18%	0%	24135m
Tue, Aug 25
24:00	✕	14%	0%	24134m
01:00	✕	33%	0%	24135m
02:00	✕	30%	0%	24134m
03:00	✕	8.3%	0%	24135m
04:00	✕	5%	0%	24134m
05:00	✓	5.3%	0%	24134m
06:00	✓	29%	0%	24134m
07:00	✕	4.8%	0%	24135m
08:00	✕	4.7%	0%	24134m
09:00	✕	4.8%	0%	24134m
10:00	✕	0%	0%	24134m
11:00	✕	0%	0%	24134m
12:00	✕	0%	0%	24135m
13:00	✕	0%	13%	24135m
14:00	✕	0%	26%	24135m
15:00	✕	0%	39%	24135m
16:00	✕	0%	39%	17697m
17:00	✕	0%	39%	11259m
18:00	✓	0%	39%	4820m
19:00	✓	40%	41%	4638m
20:00	✕	0%	44%	4455m
21:00	✕	0%	46%	4272m
22:00	✕	0%	47%	4516m
23:00	✕	0%	48%	4760m
Wed, Aug 26
24:00	✕	0%	49%	5004m
01:00	✕	0%	56%	11381m
02:00	✕	0%	62%	17758m

How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fiery Red Sky Potential 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	Aerosol Optical Depth (550nm)	Clear Sky Probability (Ensemble) %	Cloud Cover Uncertainty (Ensemble) %	Dust AOD (550nm)	Golden Hour	High Clouds %	Low Clouds %	Mid-Level Clouds %	RH @ 700 hPa %	Smoke AOD (550nm)	Solar Elevation °	Sunshine Duration seconds
Sun, Aug 23 Sunrise 05:41 Sunset 18:52
05:00 ☾	0.07	78%	12%	0.001	-	0%	0%	0%	51%	0.008	-9.3°	0seconds
06:00 ☾	0.07	99%	6%	0.001	-	0%	0%	0%	52%	0.009	3°	0seconds
07:00 ☾	0.07	99%	6%	0.001	-	0%	0%	0%	50%	0.009	15°	0seconds
08:00 ☾	0.07	99%	7%	0.001	-	0%	0%	0%	48%	0.009	28°	0seconds
09:00	0.07	99%	7%	0.001	-	0%	0%	0%	47%	0.01	40°	3600seconds
10:00	0.08	94%	11%	0.001	-	0%	0%	0%	47%	0.01	52°	3600seconds
11:00	0.09	90%	15%	0.001	-	0%	0%	0%	48%	0.01	62°	3600seconds
12:00	0.1	85%	19%	0.001	-	0%	0%	0%	49%	0.01	68°	3600seconds
13:00	0.11	84%	19%	0.001	-	0%	2%	0%	50%	0.01	66°	3600seconds
14:00	0.11	84%	18%	0.001	-	1%	1%	0%	51%	0.01	58°	3600seconds
15:00	0.1	83%	18%	0.001	-	0%	2%	0%	52%	0.01	47°	3600seconds
16:00	0.1	87%	16%	0.001	-	0%	3%	0%	52%	0.01	35°	3600seconds
17:00	0.09	91%	14%	0.001	-	3%	0%	0%	51%	0.01	22°	3600seconds
18:00	0.09	95%	12%	0.001	-	1%	0%	0%	51%	0.01	9.8°	3600seconds
19:00 ☾	0.08	96%	11%	0.001	-	0%	0%	0%	49%	0.01	-2.4°	3600seconds
20:00 ☾	0.09	96%	10%	0.001	-	0%	0%	0%	48%	0.01	-14°	3600seconds
21:00 ☾	0.09	97%	9%	0.001	-	0%	0%	0%	47%	0.01	-25°	3600seconds
22:00 ☾	0.09	98%	7%	0.001	-	0%	0%	0%	48%	0.01	-35°	0seconds
23:00 ☾	0.09	99%	5%	0.001	-	0%	1%	0%	49%	0.01	-42°	0seconds
Mon, Aug 24 Sunrise 05:42 Sunset 18:51
24:00 ☾	0.1	100%	3%	0.001	-	2%	1%	0%	50%	0.01	-45°	0seconds
01:00 ☾	0.11	100%	3%	0.001	-	2%	1%	0%	50%	0.01	-44°	0seconds
02:00 ☾	0.12	100%	3%	0.001	-	3%	0%	0%	49%	0.01	-39°	0seconds
03:00 ☾	0.14	100%	3%	0.001	-	0%	0%	0%	49%	0.01	-31°	0seconds
04:00 ☾	0.15	100%	2%	0.001	-	0%	0%	0%	49%	0.01	-21°	0seconds
05:00 ☾	0.17	100%	1%	0.001	-	1%	0%	0%	48%	0.01	-9.4°	0seconds
06:00 ☾	0.18	100%	0%	0.001	-	1%	0%	0%	47%	0.02	2.9°	0seconds
07:00 ☾	0.18	100%	0%	0.001	-	2%	0%	0%	46%	0.02	15°	0seconds
08:00 ☾	0.17	100%	0%	0.001	-	3%	0%	0%	45%	0.02	28°	0seconds
09:00	0.15	100%	0%	0.001	-	2%	0%	0%	44%	0.02	40°	3600seconds
10:00	-	99%	3%	-	-	4%	0%	0%	44%	-	52°	3600seconds
11:00	-	98%	6%	-	-	4%	0%	0%	43%	-	62°	3600seconds
12:00	-	97%	9%	-	-	0%	0%	0%	43%	-	68°	3600seconds
13:00	-	95%	11%	-	-	0%	0%	0%	44%	-	66°	3600seconds
14:00	-	94%	12%	-	-	0%	0%	0%	45%	-	58°	3600seconds
15:00	-	92%	14%	-	-	0%	0%	0%	46%	-	47°	3600seconds
16:00	-	94%	12%	-	-	0%	0%	0%	47%	-	35°	3600seconds
17:00	-	95%	11%	-	-	0%	0%	0%	49%	-	22°	3600seconds
18:00	-	97%	9%	-	-	0%	0%	0%	50%	-	9.6°	3600seconds
19:00 ☾	-	97%	9%	-	-	0%	0%	0%	49%	-	-2.7°	3600seconds
20:00 ☾	-	98%	8%	-	-	4%	0%	0%	48%	-	-15°	3600seconds
21:00 ☾	-	98%	8%	-	-	0%	0%	0%	48%	-	-26°	3600seconds
22:00 ☾	-	96%	10%	-	-	1%	0%	0%	47%	-	-35°	0seconds
23:00 ☾	-	93%	13%	-	-	4%	0%	0%	46%	-	-42°	0seconds
Tue, Aug 25 Sunrise 05:43 Sunset 18:50
24:00 ☾	-	91%	15%	-	-	5%	0%	0%	45%	-	-46°	0seconds
01:00 ☾	-	91%	15%	-	-	5%	0%	0%	46%	-	-45°	0seconds
02:00 ☾	-	92%	14%	-	-	45%	0%	0%	46%	-	-39°	0seconds
03:00 ☾	-	92%	14%	-	-	4%	0%	0%	46%	-	-31°	0seconds
04:00 ☾	-	93%	13%	-	-	1%	0%	0%	48%	-	-21°	0seconds
05:00 ☾	-	93%	13%	-	-	0%	0%	0%	49%	-	-9.6°	0seconds
06:00 ☾	-	94%	12%	-	-	0%	0%	0%	50%	-	2.7°	0seconds
07:00 ☾	-	95%	11%	-	-	0%	0%	0%	52%	-	15°	0seconds
08:00 ☾	-	95%	11%	-	-	0%	0%	0%	53%	-	27°	0seconds
09:00	-	96%	10%	-	-	0%	0%	0%	55%	-	40°	0seconds
10:00	-	95%	11%	-	-	27%	0%	0%	54%	-	52°	1200seconds
11:00	-	95%	11%	-	-	53%	0%	0%	54%	-	62°	2400seconds
12:00	-	94%	12%	-	-	80%	0%	0%	53%	-	67°	3600seconds
13:00	-	93%	12%	-	-	86%	0%	0%	49%	-	65°	3600seconds
14:00	-	93%	13%	-	-	93%	1%	0%	45%	-	57°	3600seconds
15:00	-	92%	13%	-	-	100%	1%	0%	41%	-	46°	3600seconds
16:00	-	81%	23%	-	-	100%	6%	0%	40%	-	34°	2400seconds
17:00	-	69%	32%	-	-	100%	12%	0%	39%	-	22°	1200seconds
18:00	-	58%	42%	-	-	100%	17%	0%	39%	-	9.4°	0seconds
19:00 ☾	-	55%	42%	-	-	98%	17%	0%	41%	-	-2.9°	0seconds
20:00 ☾	-	52%	43%	-	-	96%	17%	0%	43%	-	-15°	0seconds
21:00 ☾	-	49%	43%	-	-	94%	17%	1%	46%	-	-26°	0seconds
22:00 ☾	-	43%	43%	-	-	96%	15%	2%	54%	-	-35°	0seconds
23:00 ☾	-	38%	42%	-	-	98%	13%	3%	63%	-	-43°	0seconds
Wed, Aug 26 Sunrise 05:44 Sunset 18:48
24:00 ☾	-	32%	42%	-	-	100%	11%	4%	71%	-	-46°	0seconds
01:00 ☾	-	31%	41%	-	-	100%	14%	5%	70%	-	-45°	0seconds
02:00 ☾	-	29%	40%	-	-	100%	18%	5%	68%	-	-40°	0seconds
03:00 ☾	-	28%	39%	-	-	100%	22%	5%	67%	-	-31°	0seconds
04:00 ☾	-	26%	38%	-	-	100%	28%	14%	68%	-	-21°	1200seconds

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

Aug 22, 2026, 7:02 PM UTC

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