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There are 17 upcoming opportunity windows in the next 10 days.

More Fog Hunter in Canadian Rockies

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Rule Fog Hunter

Nordegg - Fog Hunter - Canadian Rockies

Nordegg, Alberta, Canada

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions

Fog Probability

67%

Dewpoint Spread0.3°C

Visibility24135 (Clear)

Relative Humidity97%

Wind Speed2.0m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Edmonton

Next opportunity

Moderate Fog

Nordegg

Today · 01:00–07:00 · 6h window

Medium confidence

56%

🌫️Fog Probability66.7%

Dewpoint Spread: 0.4°C

Visibility: 24135 (Clear)

Relative Humidity: 96%

Wind Speed: 2.0m/s (calm conditions)

Moderate Fog at Sunrise

Nordegg

Today · 07:00–09:00

🌫️Fog Probability:66.7%

Medium

Moderate Fog

Nordegg

Today · 09:00–10:00

🌫️Fog Probability:63.9%

Medium

Dense Fog

Nordegg

Tomorrow · 01:00–02:00

🌫️Fog Probability:100%

High

Dense Fog at Sunrise

Nordegg

Tomorrow · 07:00–09:00

🌫️Fog Probability:100%

High

Dense Fog

Nordegg

Tomorrow · 09:00–12:00

🌫️Fog Probability:83.1-100%

High

Moderate Fog

Nordegg

Tomorrow · 13:00–14:00

🌫️Fog Probability:72.2%

Medium

+10 more windows in the next 10 days

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

34matching hours in the next 80 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time America/Edmonton	Fog Probability ≥ 60.0%
Thu, Mar 12
22:00	49%
23:00	49%
Fri, Mar 13
24:00	49%
01:00	67%
02:00	67%
03:00	67%
04:00	69%
05:00	67%
06:00	67%
07:00	67%
08:00	67%
09:00	64%
10:00	0%
11:00	0%
12:00	0%
13:00	0%
14:00	0%
15:00	0%
16:00	0%
17:00	0%
18:00	0%
19:00	0%
20:00	42%
21:00	43%
22:00	54%
23:00	60%
Sat, Mar 14
24:00	60%
01:00	100%
02:00	60%
03:00	60%
04:00	54%
05:00	54%
06:00	54%
07:00	100%
08:00	100%
09:00	100%
10:00	100%
11:00	83%
12:00	0%
13:00	72%
14:00	59%
15:00	0%
16:00	27%
17:00	0%
18:00	0%
19:00	92%
20:00	97%
21:00	97%
22:00	86%
23:00	86%
Sun, Mar 15
24:00	69%
01:00	69%
02:00	67%
03:00	69%
04:00	69%
05:00	69%
06:00	69%
07:00	67%
08:00	67%
09:00	60%
10:00	0%
11:00	0%
12:00	0%
13:00	0%
14:00	0%
15:00	48%
16:00	48%
17:00	53%
18:00	0%
19:00	68%
20:00	76%
21:00	88%
22:00	68%
23:00	30%
Mon, Mar 16
24:00	30%
01:00	30%
02:00	40%
03:00	51%
04:00	0%
05:00	0%

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	Dew Point °C	Rainfall mm	Relative Humidity %	Snowfall cm	Temperature °C	Total Precipitation mm	Vapor Pressure Deficit kPa	Visibility m	Wind Gusts m/s	Wind Speed m/s
Fri, Mar 13 Sunrise 08:02 Sunset 19:42
07:00 ☾	-21°C	0mm	97%	0cm	-21°C	0mm	0kPa	24135m	1.4m/s	2m/s
08:00 ☾	-21°C	0mm	98%	0cm	-21°C	0mm	0kPa	24134m	1.6m/s	2.2m/s
09:00 ☾	-18°C	0mm	95%	0cm	-17°C	0mm	0.01kPa	24135m	1.5m/s	2m/s
10:00 ☾	-13°C	0mm	89%	0cm	-11°C	0mm	0.03kPa	24135m	2m/s	1.5m/s
11:00 ☾	-10°C	0mm	85%	0cm	-8.4°C	0mm	0.05kPa	24134m	2.1m/s	1.4m/s
12:00 ☾	-9°C	0mm	78%	0.24cm	-5.9°C	0.06mm	0.08kPa	18848m	1.8m/s	0.64m/s
13:00 ☾	-11°C	0mm	64%	0.13cm	-5.3°C	0.19mm	0.15kPa	14919m	4.2m/s	1.6m/s
14:00 ☾	-11°C	0mm	66%	0.18cm	-5.3°C	0.31mm	0.14kPa	11640m	3.5m/s	1.8m/s
15:00 ☾	-9.9°C	0mm	69%	0.23cm	-5.2°C	0.5mm	0.13kPa	14970m	2.6m/s	1.6m/s
16:00 ☾	-9.8°C	0mm	70%	0.26cm	-5.3°C	0.75mm	0.12kPa	13281m	2.1m/s	1.5m/s
17:00 ☾	-9.5°C	0mm	73%	0.2cm	-5.5°C	1mm	0.11kPa	17858m	1.8m/s	1.6m/s
18:00 ☾	-8.6°C	0mm	82%	0.19cm	-6°C	1.3mm	0.07kPa	23874m	1.9m/s	1.6m/s
19:00 ☾	-8.4°C	0.01mm	92%	0.17cm	-7.4°C	0.19mm	0.03kPa	17435m	1.9m/s	1.4m/s
20:00 ☾	-10°C	0.01mm	97%	0cm	-10°C	0.31mm	0.01kPa	9014m	1.5m/s	1.5m/s
21:00 ☾	-14°C	0.02mm	100%	0cm	-14°C	0.31mm	0kPa	5503m	1m/s	1m/s
22:00 ☾	-16°C	0.06mm	100%	0.07cm	-16°C	0.38mm	0kPa	1450m	0.8m/s	0.88m/s
23:00 ☾	-16°C	0.19mm	99%	0.19cm	-16°C	0.5mm	0kPa	220m	2.6m/s	1.9m/s
Sat, Mar 14 Sunrise 07:59 Sunset 19:44
24:00 ☾	-14°C	0.26mm	98%	0.26cm	-14°C	0.69mm	0kPa	149m	4m/s	2.4m/s
01:00 ☾	-15°C	0.17mm	98%	0.17cm	-15°C	0.19mm	0kPa	215m	3.7m/s	1.9m/s
02:00 ☾	-16°C	0.15mm	98%	0.15cm	-16°C	0.38mm	0kPa	226m	1.8m/s	1.2m/s
03:00 ☾	-18°C	0.06mm	99%	0.06cm	-18°C	0.44mm	0kPa	596m	0.81m/s	0.82m/s
04:00 ☾	-20°C	0.02mm	100%	0cm	-20°C	0.5mm	0kPa	1744m	0.5m/s	0.7m/s
05:00 ☾	-22°C	0.03mm	100%	0cm	-22°C	0.5mm	0kPa	1197m	0.81m/s	1.1m/s
06:00 ☾	-23°C	0.03mm	100%	0.03cm	-23°C	0.56mm	0kPa	1073m	0.91m/s	1.1m/s
07:00 ☾	-23°C	0.03mm	100%	0cm	-23°C	0mm	0kPa	1128m	0.91m/s	1.1m/s
08:00 ☾	-22°C	0.03mm	100%	0.03cm	-22°C	0.06mm	0kPa	985m	0.81m/s	0.97m/s
09:00 ☾	-20°C	0.03mm	100%	0.03cm	-20°C	0.06mm	0kPa	1037m	0.51m/s	0.48m/s
10:00 ☾	-17°C	0.03mm	95%	0.03cm	-17°C	0.13mm	0.01kPa	948m	1.1m/s	0.87m/s
11:00 ☾	-16°C	0.02mm	90%	0.03cm	-15°C	0.13mm	0.02kPa	1549m	1m/s	0.97m/s
12:00 ☾	-15°C	0.02mm	87%	0cm	-13°C	0.19mm	0.03kPa	3042m	1.2m/s	1.1m/s
13:00 ☾	-13°C	0.05mm	86%	0.06cm	-11°C	0.06mm	0.03kPa	1108m	0.52m/s	0.87m/s
14:00 ☾	-12°C	0.03mm	85%	0.05cm	-10°C	0.13mm	0.04kPa	2440m	1.2m/s	1.3m/s
15:00 ☾	-12°C	0.02mm	85%	0.05cm	-9.9°C	0.13mm	0.04kPa	3149m	1.9m/s	1.9m/s
16:00 ☾	-12°C	0.04mm	84%	0.08cm	-9.4°C	0.25mm	0.05kPa	2218m	2.1m/s	1.8m/s
17:00 ☾	-12°C	0.02mm	85%	0.05cm	-9.6°C	0.25mm	0.04kPa	4273m	2.5m/s	2.1m/s
18:00 ☾	-12°C	0.01mm	86%	0.04cm	-9.9°C	0.31mm	0.04kPa	5573m	2.4m/s	2m/s
19:00 ☾	-12°C	0.01mm	96%	0.03cm	-11°C	0.06mm	0.01kPa	4727m	1.2m/s	1.2m/s
20:00 ☾	-18°C	0.01mm	100%	0cm	-18°C	0.06mm	0kPa	3103m	0.5m/s	0.42m/s
21:00 ☾	-20°C	0.01mm	100%	0cm	-20°C	0.06mm	0kPa	3656m	0.9m/s	1.2m/s
22:00 ☾	-19°C	0mm	100%	0cm	-19°C	0.06mm	0kPa	6310m	1.3m/s	1.8m/s
23:00 ☾	-18°C	0mm	99%	0cm	-18°C	0.06mm	0kPa	6726m	1.4m/s	1.9m/s
Sun, Mar 15 Sunrise 07:57 Sunset 19:46
24:00 ☾	-19°C	0mm	99%	0cm	-18°C	0.06mm	0kPa	17979m	1.5m/s	2m/s
01:00 ☾	-19°C	0mm	99%	0cm	-19°C	0mm	0kPa	21071m	1.5m/s	2.1m/s
02:00 ☾	-18°C	0mm	98%	0cm	-18°C	0mm	0kPa	24135m	1.5m/s	2m/s
03:00 ☾	-21°C	0mm	99%	0cm	-20°C	0mm	0kPa	24134m	1.6m/s	2.3m/s
04:00 ☾	-21°C	0mm	99%	0cm	-21°C	0mm	0kPa	24134m	1.6m/s	2.4m/s
05:00 ☾	-22°C	0mm	98%	0cm	-21°C	0mm	0kPa	24135m	1.7m/s	2.4m/s
06:00 ☾	-22°C	0mm	98%	0cm	-22°C	0mm	0kPa	24135m	1.7m/s	2.4m/s
07:00 ☾	-22°C	0mm	98%	0cm	-22°C	0mm	0kPa	24135m	1.7m/s	2.4m/s
08:00 ☾	-22°C	0mm	97%	0cm	-22°C	0mm	0kPa	24135m	1.6m/s	2.4m/s
09:00 ☾	-18°C	0mm	94%	0cm	-17°C	0mm	0.01kPa	24135m	2.1m/s	2.1m/s
10:00 ☾	-14°C	0mm	89%	0cm	-13°C	0mm	0.02kPa	24135m	2m/s	1.6m/s
11:00 ☾	-12°C	0mm	86%	0cm	-9.9°C	0mm	0.04kPa	24134m	1.9m/s	1.4m/s
12:00 ☾	-10°C	0mm	82%	0cm	-7.9°C	0mm	0.06kPa	24135m	2.6m/s	1.5m/s
13:00 ☾	-9.9°C	0mm	86%	0cm	-8°C	0mm	0.05kPa	23827m	3.2m/s	1.7m/s
14:00 ☾	-9.3°C	0mm	90%	0cm	-8.1°C	0mm	0.03kPa	23520m	3.9m/s	1.9m/s
15:00 ☾	-8.8°C	0mm	95%	0cm	-8.1°C	0mm	0.02kPa	23212m	4.5m/s	2.1m/s
16:00 ☾	-9.1°C	0.01mm	94%	0.01cm	-8.3°C	0.02mm	0.02kPa	19960m	4.4m/s	2.2m/s
17:00 ☾	-9.4°C	0.03mm	93%	0.02cm	-8.5°C	0.04mm	0.02kPa	16707m	4.2m/s	2.2m/s
18:00 ☾	-9.7°C	0.04mm	92%	0.04cm	-8.7°C	0.06mm	0.02kPa	13454m	4m/s	2.2m/s
19:00 ☾	-9.5°C	0.09mm	93%	0.08cm	-8.6°C	0.06mm	0.02kPa	10425m	4.1m/s	2.3m/s
20:00 ☾	-9.4°C	0.13mm	93%	0.13cm	-8.5°C	0.06mm	0.02kPa	7395m	4.2m/s	2.3m/s
21:00 ☾	-9.2°C	0.18mm	94%	0.18cm	-8.4°C	0.06mm	0.02kPa	4366m	4.3m/s	2.3m/s
22:00 ☾	-9.3°C	0.12mm	94%	0.12cm	-8.5°C	0.15mm	0.02kPa	10956m	4m/s	2.4m/s
23:00 ☾	-9.3°C	0.07mm	94%	0.06cm	-8.5°C	0.23mm	0.02kPa	17545m	3.7m/s	2.4m/s
Mon, Mar 16 Sunrise 07:55 Sunset 19:48
24:00 ☾	-9.4°C	0.01mm	94%	0cm	-8.6°C	0.31mm	0.02kPa	24135m	3.4m/s	2.5m/s
01:00 ☾	-8.9°C	0.23mm	95%	0.22cm	-8.2°C	0.42mm	0.02kPa	16509m	3.9m/s	2.6m/s
02:00 ☾	-8.3°C	0.45mm	95%	0.45cm	-7.7°C	0.52mm	0.02kPa	8883m	4.3m/s	2.8m/s
03:00 ☾	-7.8°C	0.67mm	96%	0.67cm	-7.3°C	0.63mm	0.01kPa	1257m	4.8m/s	2.9m/s
04:00 ☾	-6.8°C	0.45mm	92%	0.45cm	-5.8°C	0.73mm	0.03kPa	8883m	5.2m/s	3.1m/s
05:00 ☾	-5.8°C	0.22mm	89%	0.22cm	-4.3°C	0.83mm	0.05kPa	16509m	5.7m/s	3.2m/s
06:00 ☾	-4.8°C	0mm	86%	0cm	-2.8°C	0.94mm	0.07kPa	24135m	6.1m/s	3.3m/s

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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