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Rule Fog Hunter

La Fortuna - Fog Hunter - Costa Rica

La Fortuna, Alajuela Province, Costa Rica

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No Fog Hunter opportunities in the next 14 days

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Rule requirements (key thresholds)
Fog Probability · ≥ 75.0%

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Fog Probability 100% failing

Currently

Real-time conditions
Dewpoint Spread0.3°C
Visibility84 (Dense fog)
Relative Humidity99%
Wind Speed3.5m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Costa_Rica

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

This forecast predicts when cloud forest conditions and valley fog create atmospheric scenes across Costa Rica's diverse elevations and microclimates. We track elevation-specific humidity, temperature differentials, and wind patterns to identify when fog and mist transform rainforest, cloud forest, and volcanic landscapes.

Costa Rica's dramatic topography creates numerous fog microclimates—from Monteverde's perpetual cloud forest mist to volcanic valley inversions to Caribbean coastal morning fog. The collision of Pacific and Caribbean weather systems over mountainous terrain produces exceptional fog photography opportunities year-round, with green season (May-November) bringing the most dramatic conditions.

What makes Costa Rica fog photography special:

  • Cloud forest immersion - Monteverde's permanent fog layer supports epiphyte-draped forests where mist is the defining feature, not occasional visitor
  • Volcanic valley fog - Arenal and Turrialba valleys fill with morning fog while volcanic peaks emerge above inversion layers
  • Microclimate transitions - Experience multiple fog types in single day—cloud forest, valley fog, coastal mist across short distances
  • Jungle emergence - Rainforest canopy trees and cecropia emerging from morning fog layers create layered atmospheric compositions

Monteverde cloud forest reserve exists because of fog—the persistent cloud layer that supports one of Earth's most biodiverse ecosystems. Here, photography captures fog as environment, with epiphytes, bromeliads, and moss-draped trees emerging from perpetual mist. The suspended bridges offer unique elevated perspectives into the fog layer. From La Fortuna, Arenal Volcano's perfect cone rises above valley fog on calm mornings, especially during green season. Turrialba Valley experiences similar inversions with the active volcano emerging above fog pools. Rincón de la Vieja's volcanic slopes create altitude-based fog layers with fumaroles adding volcanic steam to natural mist. Best conditions occur during green season when humidity is highest—arrive early as valley fog often dissipates by 8-9 AM.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Costa_Rica
Fog Probability
≥ 75.0%
Tue, Jul 7
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:0038%
20:0040%
21:0042%
22:000%
23:000%
Wed, Jul 8
24:000%
01:0069%
02:0042%
03:0042%
04:0042%
05:0042%
06:000%
07:0069%
08:0053%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:0065%
20:0045%
21:0060%
22:000%
23:000%
Thu, Jul 9
24:000%
01:0069%
02:0067%
03:0067%
04:0065%
05:0048%
06:000%
07:000%
08:0039%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:0069%
20:0067%
21:0067%
22:0067%
23:0067%
Fri, Jul 10
24:000%
01:0069%
02:0068%
03:0069%
04:0069%
05:0068%
06:000%
07:0069%
08:0054%
09:0053%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:0069%
22:0058%
23:000%
Sat, Jul 11
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
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
America/Costa_Rica
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
Wed, Jul 8 Sunrise 05:22 Sunset 18:04
07:00
0% 21°C 0mm 99% 0cm 22° 22°C 0.19mm 0.04kPa 84m 8.1m/s 3.5m/s
08:00
0% 22°C 0mm 98% 0cm 35° 22°C 0.38mm 0.06kPa 100m 7.4m/s 3.2m/s
09:00
0% 22°C 0mm 94% 0cm 49° 23°C 0.63mm 0.16kPa 1643m 5.8m/s 3.2m/s
10:00
0% 22°C 0mm 90% 0cm 62° 24°C 0.94mm 0.29kPa 1488m 5.4m/s 3.3m/s
11:00
0% 22°C 0mm 87% 0cm 74° 25°C 1.3mm 0.4kPa 1196m 5.5m/s 3.3m/s
12:00
0% 23°C 0mm 85% 0cm 77° 25°C 1.8mm 0.47kPa 21951m 5.3m/s 3.4m/s
13:00
1% 23°C 0mm 83% 0cm 68° 26°C 0.5mm 0.55kPa 21512m 5.4m/s 3.5m/s
14:00
1% 23°C 0mm 84% 0cm 55° 26°C 1.1mm 0.53kPa 17306m 5.4m/s 3.6m/s
15:00
2% 23°C 0mm 85% 0cm 42° 25°C 1.8mm 0.48kPa 13425m 5.2m/s 3.5m/s
16:00
1% 22°C 0mm 87% 0cm 28° 25°C 2.3mm 0.41kPa 2490m 5m/s 3.1m/s
17:00
1% 22°C 0mm 90% 0cm 14° 24°C 2.6mm 0.29kPa 3344m 5.3m/s 2.9m/s
18:00
0% 22°C 0mm 96% 0cm 0.72° 23°C 2.8mm 0.12kPa 2616m 4.9m/s 2.3m/s
19:00
0% 22°C 0mm 96% 0cm -13° 22°C 0.19mm 0.1kPa 3177m 5.6m/s 2.3m/s
20:00
0% 22°C 0mm 97% 0cm -26° 22°C 0.5mm 0.08kPa 2802m 5.6m/s 2.3m/s
21:00
0% 22°C 0mm 98% 0cm -38° 22°C 0.75mm 0.06kPa 1265m 5.5m/s 2.2m/s
22:00
0% 22°C 0mm 99% 0cm -48° 22°C 1mm 0.04kPa 2441m 5.3m/s 2m/s
23:00
0% 21°C 0mm 99% 0cm -55° 22°C 1.3mm 0.03kPa 530m 5.3m/s 1.9m/s
Thu, Jul 9 Sunrise 05:22 Sunset 18:04
24:00
0% 21°C 0mm 99% 0cm -57° 22°C 1.4mm 0.04kPa 200m 5.6m/s 1.9m/s
01:00
0% 21°C 0mm 99% 0cm -52° 21°C 0.19mm 0.04kPa 131m 5.2m/s 1.9m/s
02:00
0% 21°C 0mm 99% 0cm -43° 21°C 0.38mm 0.04kPa 152m 5.4m/s 1.6m/s
03:00
0% 21°C 0mm 98% 0cm -32° 21°C 0.63mm 0.05kPa 242m 5.2m/s 1.8m/s
04:00
0% 21°C 0mm 98% 0cm -19° 21°C 0.81mm 0.05kPa 273m 5.3m/s 1.8m/s
05:00
0% 21°C 0mm 98% 0cm -5.9° 21°C 0.94mm 0.06kPa 3218m 5.4m/s 2m/s
06:00
0% 21°C 0mm 97% 0cm 7.8° 22°C 1.1mm 0.08kPa 2811m 6.2m/s 2.2m/s
07:00
0% 21°C 0mm 93% 0cm 21° 22°C 0.19mm 0.18kPa 1978m 7.4m/s 3.2m/s
08:00
0% 22°C 0mm 95% 0cm 35° 22°C 0.44mm 0.13kPa 920m 6.9m/s 3.1m/s
09:00
0% 22°C 0mm 93% 0cm 49° 23°C 0.81mm 0.19kPa 1194m 6.3m/s 3.4m/s
10:00
0% 22°C 0mm 93% 0cm 62° 23°C 1.3mm 0.19kPa 701m 5.8m/s 3.3m/s
11:00
0% 22°C 0mm 94% 0cm 74° 23°C 1.8mm 0.17kPa 540m 5.5m/s 3.2m/s
12:00
0% 23°C 0mm 93% 0cm 78° 24°C 2.6mm 0.2kPa 691m 5.2m/s 3.1m/s
13:00
0% 23°C 0mm 92% 0cm 68° 24°C 1.4mm 0.24kPa 576m 5.1m/s 3.1m/s
14:00
0% 23°C 0mm 92% 0cm 55° 24°C 3.2mm 0.24kPa 677m 6.2m/s 3.5m/s
15:00
0% 23°C 0mm 94% 0cm 42° 24°C 4.8mm 0.18kPa 871m 6.9m/s 3.8m/s
16:00
0% 23°C 0mm 96% 0cm 28° 23°C 5.4mm 0.12kPa 1518m 6.8m/s 3.5m/s
17:00
0% 22°C 0mm 98% 0cm 14° 22°C 5.7mm 0.05kPa 207m 6.8m/s 3m/s
18:00
0% 22°C 0.01mm 99% 0cm 0.73° 22°C 6.1mm 0.02kPa 127m 5.7m/s 2.3m/s
19:00
0% 22°C 0mm 99% 0cm -13° 22°C 0.19mm 0.03kPa 148m 4.6m/s 1.8m/s
20:00
0% 21°C 0mm 98% 0cm -26° 22°C 0.44mm 0.04kPa 310m 5.1m/s 1.8m/s
21:00
0% 22°C 0mm 98% 0cm -38° 22°C 0.63mm 0.04kPa 229m 5.8m/s 2.1m/s
22:00
0% 22°C 0mm 99% 0cm -49° 22°C 0.75mm 0.03kPa 244m 5m/s 1.8m/s
23:00
0% 22°C 0mm 99% 0cm -56° 22°C 0.94mm 0.03kPa 151m 4.3m/s 1.6m/s
Fri, Jul 10 Sunrise 05:23 Sunset 18:04
24:00
0% 21°C 0mm 99% 0cm -57° 22°C 1.1mm 0.02kPa 143m 3.6m/s 1.6m/s
01:00
0% 21°C 0mm 99% 0cm -52° 21°C 0.19mm 0.02kPa 138m 3.3m/s 1.4m/s
02:00
0% 21°C 0mm 99% 0cm -43° 21°C 0.38mm 0.03kPa 119m 3.3m/s 1.5m/s
03:00
0% 21°C 0mm 99% 0cm -32° 21°C 0.56mm 0.02kPa 85m 3.7m/s 1.6m/s
04:00
0% 21°C 0mm 99% 0cm -19° 21°C 0.75mm 0.02kPa 92m 3.3m/s 1.5m/s
05:00
0% 21°C 0mm 99% 0cm -6° 21°C 0.88mm 0.03kPa 103m 3.2m/s 1.4m/s
06:00
0% 21°C 0mm 99% 0cm 7.7° 21°C 1mm 0.03kPa 90m 3.6m/s 1.6m/s
07:00
0% 21°C 0mm 99% 0cm 21° 22°C 0.06mm 0.03kPa 67m 3.9m/s 1.9m/s
08:00
0% 22°C 0.07mm 99% 0cm 35° 22°C 0.25mm 0.04kPa 65m 3.7m/s 2m/s
09:00
0% 22°C 0.38mm 98% 0cm 49° 22°C 0.69mm 0.05kPa 85m 3.5m/s 2.2m/s
10:00
0% 22°C 0.26mm 98% 0cm 63° 22°C 1.1mm 0.04kPa 66m 3.8m/s 2.3m/s
11:00
0% 22°C 0.02mm 99% 0cm 74° 22°C 1.3mm 0.03kPa 63m 3.2m/s 1.9m/s
12:00
0% 22°C 0mm 97% 0cm 78° 23°C 1.8mm 0.09kPa 107m 3.2m/s 2.1m/s
13:00
0% 22°C 0.06mm 97% 0cm 68° 23°C 1.9mm 0.09kPa 542m 2.6m/s 1.8m/s
14:00
0% 23°C 0.12mm 97% 0cm 55° 23°C 2mm 0.09kPa 977m 1.9m/s 1.4m/s
15:00
0% 23°C 0.18mm 97% 0cm 42° 23°C 2.2mm 0.09kPa 1413m 1.3m/s 1.1m/s
16:00
0% 23°C 0.17mm 97% 0cm 28° 23°C 2.4mm 0.09kPa 1369m 1.1m/s 0.93m/s
17:00
0% 23°C 0.16mm 97% 0cm 14° 23°C 2.6mm 0.1kPa 1325m 0.86m/s 0.8m/s
18:00
0% 23°C 0.15mm 96% 0cm 0.74° 23°C 2.8mm 0.1kPa 1281m 0.64m/s 0.67m/s
19:00
0% 23°C 0.1mm 96% 0cm -13° 23°C 1.9mm 0.1kPa 1132m 0.54m/s 0.58m/s
20:00
0% 22°C 0.05mm 96% 0cm -26° 23°C 1mm 0.1kPa 984m 0.44m/s 0.49m/s
21:00
0% 22°C 0mm 96% 0cm -38° 23°C 0.13mm 0.1kPa 835m 0.34m/s 0.4m/s
22:00
0% 22°C 0mm 96% 0cm -49° 23°C 0.15mm 0.11kPa 8135m 0.4m/s 0.45m/s
23:00
0% 22°C 0mm 96% 0cm -56° 23°C 0.17mm 0.12kPa 15435m 0.46m/s 0.51m/s
Sat, Jul 11 Sunrise 05:23 Sunset 18:04
24:00
0% 22°C 0mm 96% 0cm -57° 23°C 0.19mm 0.13kPa 22735m 0.52m/s 0.57m/s
01:00
0% 23°C 0mm 92% 0cm -52° 24°C 0.19mm 0.25kPa 23202m 0.92m/s 0.61m/s
02:00
0% 23°C 0mm 88% 0cm -43° 25°C 0.19mm 0.38kPa 23668m 1.3m/s 0.65m/s
03:00
0% 23°C 0mm 84% 0cm -32° 26°C 0.19mm 0.53kPa 24135m 1.7m/s 0.69m/s
04:00
0% 23°C 0mm 86% 0cm -19° 26°C 1.5mm 0.45kPa 17764m 3m/s 1.2m/s
05:00
0% 24°C 0mm 89% 0cm -6° 26°C 2.8mm 0.37kPa 11393m 4.2m/s 1.7m/s
06:00
0% 24°C 0mm 91% 0cm 7.7° 25°C 4.1mm 0.3kPa 5023m 5.4m/s 2.3m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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