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Rule Fog Hunter

Turrialba - Fog Hunter - Costa Rica

Turrialba, Cartago 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
Fog Probability
0%
Dewpoint Spread0.9°C
Visibility21032 (Clear)
Relative Humidity94%
Wind Speed0.9m/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
2matching hours in the next 80 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Costa_Rica
Fog Probability
≥ 75.0%
Sat, May 16
22:0065%
23:0065%
Sun, May 17
24:0065%
01:0069%
02:0069%
03:0073%
04:00100%
05:00100%
06:0069%
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%
Mon, May 18
24:000%
01:0071%
02:0071%
03:0071%
04:0058%
05:0071%
06:0058%
07:0075%
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%
22:0053%
23:0053%
Tue, May 19
24:0055%
01:000%
02:000%
03:000%
04:0053%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:0031%
16:0034%
17:000%
18:000%
19:0039%
20:0030%
21:0055%
22:0053%
23:000%
Wed, May 20
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
Sun, May 17 Sunrise 05:13 Sunset 17:48
07:00
0% 18°C 0mm 94% 0cm 24° 18°C 0mm 0.12kPa 21032m 1.8m/s 0.93m/s
08:00
0% 18°C 0mm 91% 0cm 38° 19°C 0.13mm 0.2kPa 24135m 2.2m/s 1.4m/s
09:00
0% 18°C 0mm 84% 0cm 52° 21°C 0.19mm 0.4kPa 24134m 2.7m/s 1.9m/s
10:00
0% 18°C 0mm 78% 0cm 66° 22°C 0.38mm 0.57kPa 24134m 3m/s 2.3m/s
11:00
0% 18°C 0mm 76% 0cm 78° 22°C 0.88mm 0.65kPa 23494m 2.9m/s 2.6m/s
12:00
0% 18°C 0mm 80% 0cm 78° 22°C 1.5mm 0.52kPa 18921m 2.8m/s 2.5m/s
13:00
0% 19°C 0mm 87% 0cm 67° 21°C 0.69mm 0.32kPa 4462m 2.9m/s 2.5m/s
14:00
0% 19°C 0mm 88% 0cm 53° 21°C 1.3mm 0.28kPa 3527m 2.7m/s 2.3m/s
15:00
0% 19°C 0mm 90% 0cm 39° 20°C 1.8mm 0.23kPa 2425m 2.4m/s 1.9m/s
16:00
0% 19°C 0.01mm 92% 0cm 25° 20°C 2.2mm 0.17kPa 2441m 2.3m/s 1.8m/s
17:00
0% 18°C 0mm 95% 0cm 11° 19°C 2.5mm 0.12kPa 382m 2.1m/s 1.4m/s
18:00 ☾
0% 17°C 0mm 94% 0cm -3.3° 18°C 2.8mm 0.13kPa 6622m 1.6m/s 0.99m/s
19:00 ☾
0% 17°C 0mm 95% 0cm -17° 18°C 0.13mm 0.1kPa 19731m 1.3m/s 0.54m/s
20:00 ☾
0% 17°C 0mm 95% 0cm -30° 18°C 0.25mm 0.11kPa 24000m 1.6m/s 0.62m/s
21:00 ☾
0% 17°C 0mm 90% 0cm -43° 18°C 0.25mm 0.2kPa 24135m 1.7m/s 0.89m/s
22:00 ☾
0% 16°C 0mm 91% 0cm -53° 18°C 0.25mm 0.19kPa 24135m 1.7m/s 0.86m/s
23:00 ☾
0% 17°C 0mm 94% 0cm -60° 18°C 0.25mm 0.13kPa 24134m 1.3m/s 0.59m/s
Mon, May 18 Sunrise 05:13 Sunset 17:48
24:00 ☾
0% 16°C 0mm 94% 0cm -60° 17°C 0.25mm 0.12kPa 24135m 1m/s 0.6m/s
01:00 ☾
1% 16°C 0mm 97% 0cm -53° 17°C 0mm 0.05kPa 24134m 0.9m/s 0.83m/s
02:00 ☾
2% 16°C 0mm 97% 0cm -43° 16°C 0mm 0.05kPa 21145m 0.9m/s 0.87m/s
03:00 ☾
3% 16°C 0mm 98% 0cm -31° 16°C 0mm 0.05kPa 21201m 1m/s 0.81m/s
04:00 ☾
2% 16°C 0mm 97% 0cm -18° 16°C 0mm 0.05kPa 24134m 1.1m/s 0.86m/s
05:00 ☾
1% 16°C 0mm 97% 0cm -3.8° 16°C 0mm 0.05kPa 24134m 1.1m/s 0.85m/s
06:00
0% 17°C 0mm 96% 0cm 10° 18°C 0mm 0.09kPa 10218m 1.8m/s 0.79m/s
07:00
1% 18°C 0mm 95% 0cm 24° 18°C 0.06mm 0.11kPa 808m 2.6m/s 1.4m/s
08:00
1% 18°C 0mm 90% 0cm 38° 19°C 0.19mm 0.24kPa 24134m 2.5m/s 1.6m/s
09:00
2% 18°C 0mm 82% 0cm 52° 21°C 0.5mm 0.44kPa 18998m 3m/s 2.1m/s
10:00
2% 18°C 0mm 82% 0cm 66° 21°C 1.1mm 0.44kPa 9600m 3.3m/s 2.5m/s
11:00
3% 18°C 0mm 83% 0cm 78° 21°C 1.8mm 0.43kPa 20022m 2.9m/s 2.3m/s
12:00
3% 18°C 0mm 76% 0cm 78° 22°C 2.3mm 0.65kPa 20391m 2.7m/s 2.4m/s
13:00
3% 17°C 0mm 71% 0cm 66° 23°C 0.19mm 0.82kPa 21306m 2.6m/s 2.4m/s
14:00
2% 17°C 0mm 71% 0cm 53° 23°C 0.44mm 0.81kPa 18318m 2.5m/s 2.5m/s
15:00
2% 17°C 0mm 76% 0cm 39° 22°C 0.81mm 0.63kPa 24135m 2.1m/s 2.3m/s
16:00
2% 18°C 0mm 83% 0cm 25° 21°C 1.2mm 0.42kPa 20069m 2m/s 1.9m/s
17:00
1% 18°C 0mm 90% 0cm 11° 19°C 1.5mm 0.21kPa 24135m 1.6m/s 1.4m/s
18:00 ☾
1% 17°C 0mm 94% 0cm -3.2° 18°C 1.6mm 0.13kPa 5925m 1.2m/s 0.8m/s
19:00 ☾
1% 17°C 0mm 90% 0cm -17° 18°C 0mm 0.21kPa 24135m 0.9m/s 0.58m/s
20:00 ☾
2% 16°C 0mm 88% 0cm -30° 18°C 0mm 0.26kPa 24135m 1m/s 0.62m/s
21:00 ☾
2% 16°C 0mm 94% 0cm -42° 17°C 0mm 0.11kPa 24135m 0.4m/s 0.22m/s
22:00 ☾
3% 16°C 0mm 95% 0cm -53° 17°C 0mm 0.09kPa 24134m 0.4m/s 0.34m/s
23:00 ☾
3% 16°C 0mm 95% 0cm -59° 16°C 0mm 0.09kPa 24135m 0.51m/s 0.57m/s
Tue, May 19 Sunrise 05:13 Sunset 17:49
24:00 ☾
4% 16°C 0mm 96% 0cm -59° 16°C 0mm 0.08kPa 21867m 0.9m/s 0.98m/s
01:00 ☾
7% 16°C 0mm 95% 0cm -53° 16°C 0mm 0.09kPa 20955m 0.91m/s 0.96m/s
02:00 ☾
10% 15°C 0mm 95% 0cm -43° 16°C 0mm 0.1kPa 24134m 0.8m/s 0.8m/s
03:00 ☾
13% 15°C 0mm 95% 0cm -31° 16°C 0mm 0.1kPa 24134m 0.81m/s 0.84m/s
04:00 ☾
12% 15°C 0mm 95% 0cm -17° 16°C 0mm 0.09kPa 21288m 1m/s 1.1m/s
05:00 ☾
12% 15°C 0mm 95% 0cm -3.8° 16°C 0mm 0.09kPa 24134m 0.91m/s 0.99m/s
06:00
11% 16°C 0mm 93% 0cm 10° 17°C 0mm 0.14kPa 21400m 0.9m/s 0.85m/s
07:00
11% 17°C 0mm 84% 0cm 24° 19°C 0mm 0.37kPa 24134m 0.91m/s 0.59m/s
08:00
11% 17°C 0mm 76% 0cm 38° 21°C 0mm 0.61kPa 24134m 1.5m/s 1.5m/s
09:00
11% 17°C 0mm 70% 0cm 52° 23°C 0mm 0.85kPa 24135m 2m/s 2.2m/s
10:00
11% 17°C 0mm 65% 0cm 66° 24°C 0.06mm 1kPa 19294m 2.4m/s 2.6m/s
11:00
10% 18°C 0mm 68% 0cm 78° 24°C 0.38mm 0.94kPa 23567m 2.3m/s 2.8m/s
12:00
10% 18°C 0mm 74% 0cm 78° 23°C 0.81mm 0.72kPa 18799m 2.2m/s 2.4m/s
13:00
8% 19°C 0.003mm 82% 0cm 66° 23°C 0.77mm 0.5kPa 20239m 1.6m/s 1.7m/s
14:00
7% 21°C 0.007mm 90% 0cm 53° 22°C 0.73mm 0.28kPa 21680m 0.97m/s 1m/s
15:00
5% 22°C 0.01mm 98% 0cm 39° 22°C 0.69mm 0.07kPa 23120m 0.34m/s 0.36m/s
16:00
4% 22°C 0.02mm 97% 0cm 25° 22°C 0.88mm 0.07kPa 23340m 0.4m/s 0.39m/s
17:00
4% 21°C 0.04mm 97% 0cm 11° 22°C 1.1mm 0.07kPa 23560m 0.47m/s 0.43m/s
18:00 ☾
3% 21°C 0.05mm 97% 0cm -3.2° 22°C 1.3mm 0.07kPa 23780m 0.53m/s 0.46m/s
19:00 ☾
2% 21°C 0.04mm 97% 0cm -17° 22°C 0.85mm 0.08kPa 23898m 0.66m/s 0.63m/s
20:00 ☾
2% 21°C 0.02mm 97% 0cm -30° 21°C 0.46mm 0.08kPa 24016m 0.79m/s 0.81m/s
21:00 ☾
1% 21°C 0.01mm 97% 0cm -42° 21°C 0.06mm 0.08kPa 24135m 0.93m/s 0.98m/s
22:00 ☾
1% 21°C 0.01mm 96% 0cm -53° 21°C 0.08mm 0.11kPa 24135m 0.89m/s 0.92m/s
23:00 ☾
1% 21°C 0.01mm 95% 0cm -59° 22°C 0.1mm 0.14kPa 24135m 0.85m/s 0.87m/s
Wed, May 20 Sunrise 05:13 Sunset 17:49
24:00 ☾
1% 21°C 0.01mm 94% 0cm -59° 22°C 0.13mm 0.17kPa 24135m 0.82m/s 0.82m/s
01:00 ☾
1% 21°C 0.007mm 87% 0cm -53° 23°C 0.54mm 0.37kPa 18391m 0.91m/s 1.1m/s
02:00 ☾
2% 21°C 0.003mm 80% 0cm -43° 25°C 0.96mm 0.61kPa 12646m 1m/s 1.3m/s
03:00 ☾
2% 21°C 0mm 74% 0cm -31° 26°C 1.4mm 0.89kPa 6902m 1.1m/s 1.6m/s
04:00 ☾
2% 22°C 0.14mm 78% 0cm -17° 26°C 2.9mm 0.73kPa 12646m 1.1m/s 1.4m/s
05:00 ☾
2% 22°C 0.29mm 82% 0cm -3.8° 25°C 4.5mm 0.58kPa 18391m 1.2m/s 1.3m/s
06:00
2% 22°C 0.43mm 86% 0cm 10° 25°C 6.1mm 0.44kPa 24135m 1.2m/s 1.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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