Skip to content
PhotoWeather
Get started
More Fog Hunter in Canadian Rockies
Create your own alerts
Rule Fog Hunter

Castle Junction - Fog Hunter - Canadian Rockies

Castle Junction, 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

Get notified
Free alerts · takes 30 seconds
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 Spread7.9°C
Visibility24134 (Clear)
Relative Humidity58%
Wind Speed1.8m/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.

Create your own Fog Hunter alerts

Get notified when these conditions match at your own locations.

Get this template

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/Edmonton
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%
19:000%
20:000%
21:000%
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%
06:000%
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, 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 05:38 Sunset 21:58
07:00
3% 2.1°C 0mm 58% 0cm 10° 10°C 0mm 0.52kPa 24134m 2.1m/s 1.8m/s
08:00
7% 2.1°C 0mm 48% 0cm 19° 13°C 0mm 0.76kPa 24135m 2.4m/s 1.8m/s
09:00
10% 1.5°C 0mm 41% 0cm 28° 15°C 0mm 0.99kPa 24135m 3.5m/s 2.3m/s
10:00
9% 1.7°C 0mm 38% 0cm 38° 16°C 0mm 1.1kPa 24135m 4.9m/s 2.5m/s
11:00
8% 1.4°C 0mm 35% 0cm 47° 17°C 0mm 1.3kPa 24135m 10m/s 3m/s
12:00
7% 1.2°C 0mm 33% 0cm 54° 17°C 0mm 1.3kPa 24134m 10m/s 5.2m/s
13:00
9% 0.5°C 0mm 31% 0cm 60° 18°C 0mm 1.4kPa 24134m 9.9m/s 5.6m/s
14:00
10% -1.1°C 0mm 27% 0cm 61° 18°C 0mm 1.6kPa 24134m 10m/s 7.7m/s
15:00
12% -1.3°C 0mm 27% 0cm 58° 18°C 0mm 1.5kPa 24135m 9.2m/s 7.8m/s
16:00
10% -0.8°C 0mm 29% 0cm 52° 18°C 0mm 1.4kPa 24134m 7.9m/s 6.8m/s
17:00
9% -0.6°C 0mm 30% 0cm 43° 17°C 0mm 1.4kPa 24134m 8m/s 7.8m/s
18:00 ☾
7% -0.7°C 0mm 31% 0cm 34° 17°C 0mm 1.3kPa 24135m 7.9m/s 8.2m/s
19:00 ☾
19% 0.3°C 0mm 34% 0cm 25° 16°C 0mm 1.2kPa 24135m 8.4m/s 8m/s
20:00 ☾
30% 1°C 0mm 38% 0cm 16° 15°C 0mm 1.1kPa 24135m 7.9m/s 6.7m/s
21:00 ☾
42% 1.7°C 0mm 46% 0cm 7° 13°C 0mm 0.83kPa 24134m 7.3m/s 3.4m/s
22:00 ☾
33% 0.9°C 0mm 53% 0cm -0.6° 10°C 0mm 0.58kPa 24134m 2.1m/s 2.3m/s
23:00 ☾
24% -0.2°C 0mm 52% 0cm -7.5° 9.1°C 0mm 0.55kPa 24134m 1.6m/s 1.8m/s
Thu, Jul 9 Sunrise 05:39 Sunset 21:58
24:00 ☾
15% -1.1°C 0mm 51% 0cm -13° 8.5°C 0mm 0.54kPa 24135m 1.2m/s 1.4m/s
01:00 ☾
10% -1.3°C 0mm 50% 0cm -16° 8.5°C 0mm 0.55kPa 24135m 0.91m/s 1.1m/s
02:00 ☾
5% -1.4°C 0mm 51% 0cm -16° 8.2°C 0mm 0.53kPa 24134m 1m/s 1.1m/s
03:00 ☾
0% -1.4°C 0mm 52% 0cm -15° 7.9°C 0mm 0.51kPa 24135m 1.2m/s 1.3m/s
04:00 ☾
0% -1.4°C 0mm 53% 0cm -11° 7.4°C 0mm 0.48kPa 24134m 1.2m/s 1.2m/s
05:00 ☾
0% -1.3°C 0mm 54% 0cm -5.3° 7.4°C 0mm 0.47kPa 24135m 1.1m/s 1.2m/s
06:00
0% -0.9°C 0mm 55% 0cm 2.1° 7.4°C 0mm 0.46kPa 24135m 0.91m/s 0.98m/s
07:00
1% 0.1°C 0mm 56% 0cm 10° 8.3°C 0mm 0.48kPa 24134m 1.4m/s 1.4m/s
08:00
3% 0.2°C 0mm 48% 0cm 19° 11°C 0mm 0.68kPa 24135m 2m/s 1.7m/s
09:00
4% -0.2°C 0mm 41% 0cm 28° 13°C 0mm 0.87kPa 24135m 2.4m/s 2m/s
10:00
6% -1.1°C 0mm 35% 0cm 38° 14°C 0mm 1.1kPa 24134m 4.9m/s 2.4m/s
11:00
7% -1.6°C 0mm 31% 0cm 46° 15°C 0mm 1.2kPa 24135m 6.2m/s 2.5m/s
12:00
9% -1.4°C 0mm 30% 0cm 54° 16°C 0mm 1.3kPa 24135m 6.4m/s 2.7m/s
13:00
7% -0.8°C 0mm 31% 0cm 60° 16°C 0mm 1.3kPa 24134m 6.2m/s 3.3m/s
14:00
4% -0.4°C 0mm 30% 0cm 61° 17°C 0mm 1.4kPa 24135m 6.8m/s 3.1m/s
15:00
2% -0.4°C 0mm 30% 0cm 58° 18°C 0mm 1.4kPa 24135m 7.9m/s 4m/s
16:00
2% 0.2°C 0mm 31% 0cm 52° 18°C 0mm 1.4kPa 24135m 9.2m/s 6.3m/s
17:00
1% 0.4°C 0mm 31% 0cm 43° 17°C 0mm 1.4kPa 24135m 8.8m/s 6.8m/s
18:00 ☾
1% 0.3°C 0mm 33% 0cm 34° 17°C 0mm 1.3kPa 24135m 8.2m/s 6.5m/s
19:00 ☾
2% 0.3°C 0mm 34% 0cm 25° 16°C 0mm 1.2kPa 24135m 6.8m/s 5.8m/s
20:00 ☾
4% 0.8°C 0mm 38% 0cm 16° 15°C 0mm 1kPa 24135m 5.1m/s 4.6m/s
21:00 ☾
5% 2.4°C 0mm 49% 0cm 6.9° 13°C 0mm 0.75kPa 24134m 2.5m/s 2.5m/s
22:00 ☾
4% 1.4°C 0mm 56% 0cm -0.71° 9.8°C 0mm 0.53kPa 24135m 1.9m/s 2.2m/s
23:00 ☾
2% 1.2°C 0mm 55% 0cm -7.6° 9.7°C 0mm 0.54kPa 24134m 1.6m/s 1.8m/s
Fri, Jul 10 Sunrise 05:40 Sunset 21:57
24:00 ☾
1% 0.8°C 0mm 51% 0cm -13° 11°C 0mm 0.62kPa 24135m 1.7m/s 2m/s
01:00 ☾
3% 0.6°C 0mm 54% 0cm -16° 9.3°C 0mm 0.54kPa 24134m 1.7m/s 1.9m/s
02:00 ☾
6% 0.4°C 0mm 59% 0cm -16° 7.9°C 0mm 0.43kPa 24134m 1.3m/s 1.3m/s
03:00 ☾
8% 0.3°C 0mm 60% 0cm -15° 7.5°C 0mm 0.41kPa 24135m 0.81m/s 0.89m/s
04:00 ☾
11% 0.5°C 0mm 61% 0cm -11° 7.5°C 0mm 0.4kPa 24134m 0.8m/s 0.79m/s
05:00 ☾
14% 0.4°C 0mm 63% 0cm -5.4° 7°C 0mm 0.37kPa 24134m 1.1m/s 1.1m/s
06:00
17% 0.8°C 0mm 65% 0cm 2° 7°C 0mm 0.35kPa 24134m 1.3m/s 1.3m/s
07:00
35% 1.9°C 0mm 64% 0cm 10° 8.3°C 0mm 0.4kPa 24135m 1.2m/s 1.3m/s
08:00
54% 2.2°C 0mm 56% 0cm 19° 11°C 0mm 0.56kPa 24134m 2m/s 1.6m/s
09:00
72% 2.4°C 0mm 49% 0cm 28° 13°C 0mm 0.76kPa 24134m 2.7m/s 2.2m/s
10:00
72% 2.7°C 0mm 46% 0cm 37° 14°C 0mm 0.85kPa 24135m 3.1m/s 2.5m/s
11:00
71% 3.2°C 0mm 45% 0cm 46° 15°C 0mm 0.95kPa 24135m 4.5m/s 2.6m/s
12:00
71% 3°C 0mm 41% 0cm 54° 16°C 0mm 1.1kPa 24135m 5.8m/s 2.5m/s
13:00
47% 3°C 0mm 45% 0cm 59° 15°C 0mm 0.92kPa 24135m 5.2m/s 2.6m/s
14:00
24% 2.9°C 0mm 49% 0cm 61° 13°C 0mm 0.77kPa 24135m 4.5m/s 2.6m/s
15:00
0% 2.6°C 0mm 53% 0cm 58° 12°C 0mm 0.64kPa 24135m 3.9m/s 2.7m/s
16:00
0% 3°C 0mm 62% 0cm 51° 10°C 0mm 0.47kPa 24135m 3.1m/s 2.4m/s
17:00
0% 3.1°C 0mm 70% 0cm 43° 8.3°C 0mm 0.33kPa 24135m 2.3m/s 2m/s
18:00 ☾
0% 3.1°C 0mm 78% 0cm 34° 6.6°C 0mm 0.21kPa 24135m 1.4m/s 1.6m/s
19:00 ☾
8% 3.1°C 0mm 81% 0cm 25° 6.1°C 0mm 0.18kPa 24135m 1.2m/s 1.4m/s
20:00 ☾
15% 3.2°C 0mm 84% 0cm 16° 5.6°C 0mm 0.15kPa 24135m 1m/s 1.1m/s
21:00 ☾
23% 3.2°C 0mm 87% 0cm 6.9° 5.2°C 0mm 0.12kPa 24135m 0.84m/s 0.84m/s
22:00 ☾
29% 3.1°C 0mm 87% 0cm -0.83° 5°C 0mm 0.11kPa 24135m 1.1m/s 1.2m/s
23:00 ☾
35% 3°C 0mm 87% 0cm -7.7° 4.9°C 0mm 0.11kPa 24135m 1.4m/s 1.5m/s
Sat, Jul 11 Sunrise 05:41 Sunset 21:56
24:00 ☾
41% 2.9°C 0mm 88% 0cm -13° 4.7°C 0mm 0.11kPa 24135m 1.7m/s 1.8m/s
01:00 ☾
49% 3.3°C 0.01mm 81% 0cm -16° 6.3°C 0mm 0.18kPa 24135m 2.1m/s 1.9m/s
02:00 ☾
58% 3.6°C 0.02mm 74% 0cm -17° 7.9°C 0mm 0.28kPa 24135m 2.5m/s 1.9m/s
03:00 ☾
66% 3.7°C 0.03mm 67% 0cm -15° 9.5°C 0mm 0.39kPa 24135m 2.9m/s 2m/s
04:00 ☾
65% 3.5°C 0.02mm 59% 0cm -11° 11°C 0.04mm 0.55kPa 24135m 5.6m/s 3.2m/s
05:00 ☾
65% 3°C 0.01mm 51% 0cm -5.5° 13°C 0.08mm 0.73kPa 24135m 8.2m/s 4.4m/s
06:00
64% 2°C 0mm 43% 0cm 1.9° 15°C 0.13mm 0.95kPa 24135m 11m/s 5.6m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account