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Rule Fog Hunter

Banff - Fog Hunter - Canadian Rockies

Banff, Alberta, Canada

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 Spread7.6°C
Visibility24134 (Clear)
Relative Humidity59%
Wind Speed1.1m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Edmonton

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 tracks the temperature inversions and fog conditions that create some of the most dramatic mountain photography in North America. We combine atmospheric data with local topography to predict when Bow Valley inversions will trap fog below while peaks glow above.

The Canadian Rockies are famous for their autumn morning fog, particularly in the Bow Valley corridor between Banff and Lake Louise. Cold mountain air settles into valleys overnight, creating thick fog layers that can persist until mid-morning, especially in September and October.

What makes Rockies fog photography exceptional:

  • Bow Valley inversions - Temperature inversions create sea-of-fog conditions with peaks emerging above the cloud layer
  • Glacier lake mist - Moraine Lake and Lake Louise develop ethereal mist at dawn when water temperatures meet cold air
  • Castle Junction phenomena - Junction areas where valleys meet create reliable fog formation zones
  • Autumn intensity - September through October brings the most dramatic and frequent fog events

Best shooting occurs at elevated viewpoints like Tunnel Mountain or Sulphur Mountain during inversions, or directly at lake level during misty conditions. Our forecast identifies when these different fog types will occur.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 80 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Edmonton
Fog Probability
≥ 75.0%
Tue, Jul 7
22:000%
23:000%
Wed, Jul 8
24:000%
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%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Jul 9
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:0055%
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, Jul 10
24:000%
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%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
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/Edmonton
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 05:37 Sunset 21:56
07:00
18% 2.4°C 0mm 59% 0cm 10° 10°C 0mm 0.5kPa 24134m 1.1m/s 1.1m/s
08:00
35% 2.2°C 0mm 48% 0cm 19° 13°C 0mm 0.76kPa 24135m 1.2m/s 0.94m/s
09:00
52% 2.3°C 0mm 41% 0cm 29° 16°C 0mm 1kPa 24135m 2.4m/s 1.4m/s
10:00
55% 1.7°C 0mm 34% 0cm 38° 18°C 0mm 1.4kPa 24135m 7m/s 2m/s
11:00
57% 1.4°C 0mm 31% 0cm 47° 19°C 0mm 1.5kPa 24135m 9m/s 3.1m/s
12:00
60% 1.1°C 0mm 29% 0cm 55° 19°C 0mm 1.6kPa 24134m 9m/s 4.4m/s
13:00
45% 0.4°C 0mm 28% 0cm 60° 20°C 0mm 1.7kPa 24134m 9.6m/s 6m/s
14:00
30% -0.4°C 0mm 26% 0cm 61° 20°C 0mm 1.7kPa 24134m 9.6m/s 5.6m/s
15:00
15% -1.9°C 0mm 23% 0cm 58° 20°C 0mm 1.8kPa 24135m 10m/s 6.9m/s
16:00
11% -1.7°C 0mm 24% 0cm 51° 19°C 0mm 1.7kPa 24134m 8.6m/s 7.7m/s
17:00
8% -1.5°C 0mm 26% 0cm 43° 18°C 0mm 1.6kPa 24134m 8.2m/s 8.1m/s
18:00 ☾
4% -0.9°C 0mm 28% 0cm 34° 18°C 0mm 1.5kPa 24135m 7.9m/s 7.8m/s
19:00 ☾
17% -0.8°C 0mm 29% 0cm 25° 17°C 0mm 1.4kPa 24135m 8.2m/s 7.4m/s
20:00 ☾
29% 0.1°C 0mm 33% 0cm 15° 16°C 0mm 1.2kPa 24135m 8.6m/s 6.6m/s
21:00 ☾
42% 0.8°C 0mm 40% 0cm 6.8° 14°C 0mm 0.96kPa 24134m 5.5m/s 3.1m/s
22:00 ☾
33% 0.2°C 0mm 48% 0cm -0.89° 11°C 0mm 0.68kPa 24134m 1.3m/s 1.4m/s
23:00 ☾
25% 0.3°C 0mm 52% 0cm -7.7° 9.6°C 0mm 0.57kPa 24134m 0.8m/s 0.83m/s
Thu, Jul 9 Sunrise 05:38 Sunset 21:56
24:00 ☾
16% 0.5°C 0mm 57% 0cm -13° 8.6°C 0mm 0.48kPa 24135m 0.51m/s 0.39m/s
01:00 ☾
11% 1.2°C 0mm 63% 0cm -16° 7.9°C 0mm 0.4kPa 24135m 0.41m/s 0.46m/s
02:00 ☾
6% 2.8°C 0mm 72% 0cm -16° 7.5°C 0mm 0.29kPa 19619m 1.2m/s 1.3m/s
03:00 ☾
1% 4.2°C 0mm 82% 0cm -15° 7°C 0mm 0.18kPa 24135m 1.3m/s 1.4m/s
04:00 ☾
1% 5.2°C 0mm 91% 0cm -11° 6.6°C 0mm 0.09kPa 24134m 1.2m/s 1.3m/s
05:00 ☾
0% 5.8°C 0mm 94% 0cm -5.2° 6.6°C 0mm 0.05kPa 22777m 0.94m/s 0.87m/s
06:00
0% 6.1°C 0mm 96% 0cm 2.2° 6.7°C 0mm 0.04kPa 24135m 0.81m/s 0.86m/s
07:00
2% 6.6°C 0mm 91% 0cm 10° 7.9°C 0mm 0.09kPa 24134m 1.2m/s 0.9m/s
08:00
3% 5.9°C 0mm 78% 0cm 19° 9.6°C 0mm 0.27kPa 24135m 1.6m/s 1.2m/s
09:00
5% 4.2°C 0mm 59% 0cm 28° 12°C 0mm 0.58kPa 24135m 1.8m/s 1.2m/s
10:00
7% 1.8°C 0mm 42% 0cm 38° 14°C 0mm 0.95kPa 24134m 3.5m/s 1.6m/s
11:00
10% -1.5°C 0mm 29% 0cm 47° 17°C 0mm 1.3kPa 24135m 6.4m/s 2.5m/s
12:00
12% -2°C 0mm 27% 0cm 54° 17°C 0mm 1.5kPa 24135m 6.3m/s 3.4m/s
13:00
10% -1.8°C 0mm 26% 0cm 60° 18°C 0mm 1.5kPa 24134m 6m/s 3.7m/s
14:00
9% -1°C 0mm 27% 0cm 61° 19°C 0mm 1.6kPa 24135m 8.7m/s 6.3m/s
15:00
7% -0.7°C 0mm 26% 0cm 58° 19°C 0mm 1.6kPa 24135m 8.5m/s 5.8m/s
16:00
6% -0.7°C 0mm 26% 0cm 51° 19°C 0mm 1.6kPa 24135m 9.7m/s 6.5m/s
17:00
4% -0.4°C 0mm 27% 0cm 43° 19°C 0mm 1.6kPa 24135m 9.9m/s 8.2m/s
18:00 ☾
3% -0.4°C 0mm 29% 0cm 34° 18°C 0mm 1.5kPa 24135m 8.2m/s 8m/s
19:00 ☾
4% -0.4°C 0mm 30% 0cm 25° 17°C 0mm 1.4kPa 24135m 6.6m/s 6.7m/s
20:00 ☾
4% 0.3°C 0mm 34% 0cm 15° 16°C 0mm 1.2kPa 24135m 4.4m/s 4m/s
21:00 ☾
5% 2.1°C 0mm 44% 0cm 6.7° 14°C 0mm 0.89kPa 24134m 1.8m/s 2m/s
22:00 ☾
3% 1°C 0mm 52% 0cm -1° 10°C 0mm 0.61kPa 24135m 1.3m/s 1.4m/s
23:00 ☾
2% 1.2°C 0mm 58% 0cm -7.8° 9°C 0mm 0.48kPa 24134m 0.93m/s 0.45m/s
Fri, Jul 10 Sunrise 05:39 Sunset 21:55
24:00 ☾
0% 2.5°C 0mm 70% 0cm -13° 7.7°C 0mm 0.32kPa 24135m 0.73m/s 0.55m/s
01:00 ☾
11% 3.6°C 0mm 78% 0cm -16° 7.1°C 0mm 0.22kPa 24134m 0.73m/s 0.76m/s
02:00 ☾
23% 4.1°C 0mm 83% 0cm -17° 6.8°C 0mm 0.16kPa 24134m 1m/s 1.1m/s
03:00 ☾
34% 4.7°C 0mm 88% 0cm -15° 6.6°C 0mm 0.12kPa 24135m 1m/s 0.99m/s
04:00 ☾
38% 5.2°C 0mm 91% 0cm -11° 6.6°C 0mm 0.09kPa 24134m 0.8m/s 0.76m/s
05:00 ☾
42% 5.1°C 0mm 92% 0cm -5.3° 6.4°C 0mm 0.08kPa 24134m 0.3m/s 0.18m/s
06:00
46% 5.1°C 0mm 90% 0cm 2.1° 6.7°C 0mm 0.1kPa 24134m 0.42m/s 0.43m/s
07:00
60% 4.6°C 0mm 78% 0cm 10° 8.2°C 0mm 0.24kPa 24135m 0.44m/s 0.5m/s
08:00
75% 3.6°C 0mm 64% 0cm 19° 10°C 0mm 0.44kPa 24134m 0.91m/s 0.78m/s
09:00
89% 2.9°C 0mm 51% 0cm 28° 13°C 0mm 0.71kPa 24134m 1.6m/s 1.3m/s
10:00
90% 2.6°C 0mm 43% 0cm 38° 15°C 0mm 0.97kPa 24135m 2.5m/s 1.6m/s
11:00
90% 2.6°C 0mm 38% 0cm 47° 17°C 0mm 1.2kPa 24135m 5.8m/s 1.8m/s
12:00
91% 2.2°C 0mm 35% 0cm 54° 18°C 0mm 1.3kPa 24135m 6.3m/s 2.7m/s
13:00
63% 3.1°C 0mm 40% 0cm 60° 17°C 0mm 1.1kPa 24135m 4.8m/s 2.5m/s
14:00
35% 3.7°C 0mm 46% 0cm 61° 15°C 0mm 0.93kPa 24135m 3.2m/s 2.2m/s
15:00
7% 4.1°C 0mm 52% 0cm 58° 14°C 0mm 0.76kPa 24135m 1.7m/s 2m/s
16:00
5% 4.1°C 0mm 57% 0cm 51° 12°C 0mm 0.61kPa 24135m 1.8m/s 2.1m/s
17:00
2% 3.9°C 0mm 63% 0cm 43° 11°C 0mm 0.48kPa 24135m 1.8m/s 2.2m/s
18:00 ☾
0% 3.6°C 0mm 68% 0cm 34° 9.1°C 0mm 0.36kPa 24135m 1.8m/s 2.2m/s
19:00 ☾
7% 3.7°C 0mm 71% 0cm 24° 8.6°C 0mm 0.32kPa 24135m 1.8m/s 2.2m/s
20:00 ☾
14% 3.7°C 0mm 74% 0cm 15° 8.1°C 0mm 0.28kPa 24135m 1.8m/s 2.1m/s
21:00 ☾
21% 3.7°C 0mm 77% 0cm 6.6° 7.6°C 0mm 0.24kPa 24135m 1.7m/s 2.1m/s
22:00 ☾
29% 3.7°C 0mm 78% 0cm -1.1° 7.2°C 0mm 0.22kPa 24135m 1.8m/s 2.2m/s
23:00 ☾
38% 3.7°C 0mm 80% 0cm -7.9° 6.9°C 0mm 0.2kPa 24135m 1.9m/s 2.2m/s
Sat, Jul 11 Sunrise 05:40 Sunset 21:54
24:00 ☾
46% 3.7°C 0mm 81% 0cm -13° 6.6°C 0mm 0.18kPa 24135m 1.9m/s 2.3m/s
01:00 ☾
56% 4.1°C 0mm 72% 0cm -16° 8.9°C 0mm 0.32kPa 24135m 2.5m/s 2.2m/s
02:00 ☾
66% 4.4°C 0mm 63% 0cm -17° 11°C 0mm 0.49kPa 24135m 3.1m/s 2.1m/s
03:00 ☾
76% 4.2°C 0mm 54% 0cm -15° 13°C 0mm 0.71kPa 24135m 3.7m/s 2m/s
04:00 ☾
76% 3.8°C 0mm 48% 0cm -11° 15°C 0mm 0.87kPa 24135m 6.2m/s 3m/s
05:00 ☾
77% 3.2°C 0mm 43% 0cm -5.4° 16°C 0mm 1kPa 24135m 8.7m/s 4m/s
06:00
77% 2.4°C 0mm 37% 0cm 2° 17°C 0mm 1.2kPa 24135m 11m/s 5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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