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Rule Fog Hunter

Bretton Woods - Fog Hunter - New England, USA

Bretton Woods, New Hampshire, United States

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread3.1°C
Visibility23748 (Clear)
Relative Humidity79%
Wind Speed2.0m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/New_York
fog weather icon
Next opportunity
Dense Fog (lingering)
Bretton Woods
Wed, Feb 25 · 01:00–02:00 · 1h window
Medium confidence
46%
🌫️Fog Probability87.5%
Dewpoint Spread: 0.8°C
Visibility: 2636 (Mist/Haze)
Relative Humidity: 94%
Wind Speed: 1.2m/s (calm conditions)
fog weather icon
Dense Fog (lingering) at Sunrise
Bretton Woods
Sat, Feb 28 · 07:00–08:00
🌫️Fog Probability:100%
Medium
fog weather icon
Dense Fog (lingering) at Sunset
Bretton Woods
Tue, Mar 3 · 16:00–17:00
🌫️Fog Probability:90.4%
Medium

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the maritime fog and mountain mist that define New England's atmospheric photography. We combine ocean temperature, dewpoint, and topography to predict when coastal fog banks and mountain valley mist will create moody, quintessentially New England conditions.

New England sits where cold Atlantic waters meet the North American continent, creating persistent fog conditions especially during autumn. The region's mountains—from the White Mountains of New Hampshire to the Green Mountains of Vermont—also generate valley fog that transforms familiar scenes into ethereal compositions.

What makes New England fog photography exceptional:

  • Maritime fog - Cold Atlantic waters generate thick fog banks that roll inland, especially in Maine and coastal Massachusetts
  • White Mountains valleys - Notches and valleys trap morning mist that burns off by mid-morning, creating dramatic reveal moments
  • Covered bridge fog - Vermont and New Hampshire's iconic covered bridges emerge from fog like scenes from another century
  • Acadia coastal mist - Rocky Maine coast where fog meets granite cliffs and crashing waves

Best conditions occur September through October when warm land meets cooling air. Coastal fog can persist all day, while mountain valley fog typically burns off by late morning. Classic locations include Franconia Notch, Smugglers' Notch, and Mount Desert Island.

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72-hour requirements breakdown

What passed or failed, hour by hour
1matching hours in the next 95 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Sat, Feb 21
14:0038%1.1°C1155m2.1m/s
15:0043%1°C1364m2.1m/s
16:000%1.3°C6982m2m/s
17:000%0.9°C9700m1.4m/s
18:000%0.9°C23655m1.5m/s
19:000%0.7°C24135m1.8m/s
20:0060%0.9°C23007m2.2m/s
21:0060%0.8°C22757m2.4m/s
22:0072%0.5°C11006m2.5m/s
23:0083%0.3°C9914m2.4m/s
Sun, Feb 22
24:0075%0.2°C11021m2.5m/s
01:0086%0.3°C8869m2.4m/s
02:0075%0.3°C10114m2.3m/s
03:0075%0.3°C10555m2.4m/s
04:0075%0.4°C12510m2.5m/s
05:0072%0.5°C12503m2.4m/s
06:0075%0.5°C13495m2.2m/s
07:0072%0.6°C13498m2.5m/s
08:000%1°C24135m2m/s
09:000%1.8°C24135m1.9m/s
10:000%2°C24135m1.8m/s
11:000%2.1°C24135m2m/s
12:000%2.5°C24135m2.1m/s
13:000%2.8°C23781m2m/s
14:000%3.1°C23748m2m/s
15:000%3.1°C24134m1.9m/s
16:000%1.8°C24135m2.1m/s
17:0060%0.7°C24135m1.8m/s
18:0072%0.6°C14524m2.4m/s
19:0075%0.4°C13578m2.5m/s
20:0072%0.6°C14225m2.6m/s
21:0072%0.6°C10055m2.5m/s
22:0075%0.5°C13021m2.3m/s
23:0072%0.5°C11379m2.1m/s
Mon, Feb 23
24:0072%0.5°C13833m2.4m/s
01:0064%0.7°C24134m2.2m/s
02:0072%0.7°C14306m2.3m/s
03:0072%0.6°C11183m2.1m/s
04:0081%0.5°C5904m1.9m/s
05:0046%0.6°C4836m2.3m/s
06:0042%0.5°C8159m2m/s
07:0032%0.6°C22489m2.2m/s
08:000%1.1°C24134m2m/s
09:000%1.6°C24135m2.7m/s
10:000%2°C5053m2.5m/s
11:0033%1.3°C2264m3.6m/s
12:000%1.1°C1461m3.3m/s
13:000%0.9°C1571m4.1m/s
14:0028%1°C1612m4.3m/s
15:000%0.7°C1570m4.2m/s
16:000%0.7°C2076m4.4m/s
17:000%0.4°C3464m4.3m/s
18:000%0.4°C2145m4m/s
19:000%0.3°C786m3.8m/s
20:00100%0.3°C752m3.8m/s
21:00100%0.3°C653m3.8m/s
22:0060%0.2°C457m3.4m/s
23:0058%0.2°C327m3.3m/s
Tue, Feb 24
24:0050%0.4°C454m3.8m/s
01:0050%0.4°C349m3.7m/s
02:0099%0.4°C248m3.9m/s
03:0099%0.4°C349m3.6m/s
04:0050%0.5°C318m3.6m/s
05:0050%0.4°C278m3.8m/s
06:0050%0.4°C325m3.8m/s
07:0050%0.4°C291m3.3m/s
08:00100%0.5°C264m3.7m/s
09:0097%0.9°C443m3.8m/s
10:0042%1.1°C469m3.7m/s
11:0042%1.2°C490m3.6m/s
12:0042%1.3°C614m3.5m/s
13:0042%1.2°C521m3.7m/s
14:0084%1.2°C383m3.7m/s
15:0093%1.2°C684m3.3m/s
16:0047%1.2°C1148m3m/s
17:0057%0.5°C682m2.7m/s
18:0049%0.1°C3027m1.8m/s
19:0049%0°C4991m0.93m/s
20:0043%0°C9523m0.93m/s
21:0078%0°C14055m0.93m/s
22:0069%0.1°C18586m0.93m/s
23:0075%0.2°C13269m1m/s
Wed, Feb 25
24:0081%0.5°C7953m1.1m/s
01:0088%0.8°C2636m1.2m/s
02:0049%0.8°C1810m1.3m/s
03:0055%0.8°C984m1.5m/s
04:000%0.8°C158m1.6m/s
05:000%0.8°C177m1.7m/s
06:000%0.9°C196m1.8m/s
07:000%0.9°C215m1.9m/s
08:000%1°C1689m1.7m/s
09:000%1.2°C3164m1.5m/s
10:000%1.3°C4638m1.3m/s
11:0031%0.9°C5469m1.3m/s
12:0032%0.6°C6299m1.4m/s
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/New_York
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Sun, Feb 22 Sunrise 06:34 Sunset 17:24
14:00
-5.4°C 0mm 79% 0cm -2.3°C 0mm 0.11kPa 3.2m/s
15:00
-5.7°C 0mm 80% 0cm -2.6°C 0mm 0.1kPa 3m/s
16:00
-5.1°C 0mm 88% 0cm -3.3°C 0mm 0.06kPa 3.1m/s
17:00
-5.9°C 0mm 95% 0cm -5.2°C 0mm 0.02kPa 2.1m/s
18:00
-8.5°C 0mm 96% 0cm -7.9°C 0mm 0.01kPa 2.7m/s
19:00
-9°C 0.01mm 96% 0cm -8.6°C 0mm 0.01kPa 3.1m/s
20:00
-9.1°C 0.03mm 96% 0cm -8.5°C 0mm 0.01kPa 3m/s
21:00
-9.5°C 0.04mm 96% 0cm -8.9°C 0mm 0.01kPa 3m/s
22:00
-9.7°C 0.02mm 96% 0cm -9.2°C 0.06mm 0.01kPa 2.6m/s
23:00
-8.6°C 0.02mm 96% 0cm -8.1°C 0.06mm 0.01kPa 2.7m/s
Mon, Feb 23 Sunrise 06:33 Sunset 17:25
24:00
-8.7°C 0.01mm 96% 0cm -8.2°C 0.06mm 0.01kPa 3.1m/s
01:00
-8.2°C 0mm 95% 0cm -7.5°C 0.13mm 0.02kPa 3.2m/s
02:00
-8.4°C 0.02mm 95% 0cm -7.7°C 0mm 0.02kPa 3.3m/s
03:00
-8.6°C 0.06mm 95% 0.06cm -8°C 0mm 0.02kPa 3.1m/s
04:00
-8.6°C 0.12mm 96% 0.12cm -8.1°C 0.13mm 0.01kPa 2.8m/s
05:00
-8.8°C 0.1mm 96% 0.1cm -8.2°C 0.25mm 0.01kPa 3.6m/s
06:00
-9.1°C 0.02mm 97% 0cm -8.6°C 0.31mm 0.01kPa 3.1m/s
07:00
-9.7°C 0mm 96% 0cm -9.1°C 0.31mm 0.01kPa 3.8m/s
08:00
-9.7°C 0.01mm 91% 0cm -8.6°C 0mm 0.03kPa 4.1m/s
09:00
-9.9°C 0.01mm 88% 0cm -8.3°C 0.06mm 0.04kPa 4.4m/s
10:00
-10°C 0.23mm 86% 0.23cm -8°C 0.13mm 0.05kPa 4.6m/s
11:00
-9.2°C 0.4mm 90% 0.4cm -7.9°C 0.56mm 0.03kPa 5.6m/s
12:00
-9°C 0.66mm 92% 0.66cm -7.9°C 1mm 0.03kPa 5.1m/s
13:00
-8.8°C 0.55mm 93% 0.55cm -7.9°C 1.8mm 0.02kPa 6.7m/s
14:00
-8.8°C 0.53mm 93% 0.53cm -7.8°C 0.5mm 0.02kPa 7.9m/s
15:00
-8.6°C 0.45mm 94% 0.46cm -7.9°C 1.1mm 0.02kPa 8.5m/s
16:00
-8.2°C 0.11mm 95% 0.13cm -7.5°C 1.3mm 0.02kPa 8.8m/s
17:00
-8.9°C 0.02mm 96% 0.03cm -8.5°C 1.4mm 0.01kPa 8.9m/s
18:00
-9.9°C 0.05mm 97% 0.05cm -9.5°C 1.4mm 0.01kPa 8m/s
19:00
-10°C 0.07mm 98% 0.07cm -10°C 1.5mm 0.01kPa 8.2m/s
20:00
-11°C 0.07mm 98% 0.07cm -10°C 0.06mm 0.01kPa 8.4m/s
21:00
-11°C 0.07mm 98% 0.07cm -10°C 0.13mm 0.01kPa 8.3m/s
22:00
-11°C 0.06mm 98% 0.06cm -11°C 0.25mm 0.01kPa 7.2m/s
23:00
-11°C 0.09mm 98% 0.09cm -11°C 0.31mm 0.01kPa 7.3m/s
Tue, Feb 24 Sunrise 06:31 Sunset 17:27
24:00
-11°C 0.07mm 97% 0.07cm -11°C 0.38mm 0.01kPa 9m/s
01:00
-12°C 0.08mm 97% 0.08cm -11°C 0.44mm 0.01kPa 8.8m/s
02:00
-12°C 0.1mm 97% 0.1cm -12°C 0.06mm 0.01kPa 9m/s
03:00
-12°C 0.07mm 97% 0.07cm -12°C 0.19mm 0.01kPa 9.6m/s
04:00
-13°C 0.08mm 97% 0.08cm -12°C 0.31mm 0.01kPa 9.7m/s
05:00
-12°C 0.09mm 97% 0.1cm -12°C 0.38mm 0.01kPa 9.2m/s
06:00
-13°C 0.09mm 97% 0.09cm -12°C 0.5mm 0.01kPa 9.6m/s
07:00
-13°C 0.09mm 97% 0.09cm -13°C 0.56mm 0.01kPa 9.5m/s
08:00
-13°C 0.11mm 96% 0.11cm -12°C 0.06mm 0.01kPa 8.1m/s
09:00
-13°C 0.07mm 93% 0.08cm -12°C 0.19mm 0.02kPa 7.3m/s
10:00
-13°C 0.07mm 92% 0.08cm -12°C 0.31mm 0.02kPa 6.7m/s
11:00
-12°C 0.07mm 91% 0.09cm -11°C 0.38mm 0.02kPa 6m/s
12:00
-11°C 0.06mm 90% 0.08cm -10°C 0.44mm 0.03kPa 5.6m/s
13:00
-11°C 0.07mm 90% 0.09cm -10°C 0.56mm 0.03kPa 5.3m/s
14:00
-11°C 0.09mm 91% 0.12cm -10°C 0.13mm 0.02kPa 5.2m/s
15:00
-12°C 0.05mm 91% 0.06cm -11°C 0.19mm 0.02kPa 4.8m/s
16:00
-13°C 0.02mm 91% 0.03cm -12°C 0.25mm 0.02kPa 4.5m/s
17:00
-14°C 0.04mm 96% 0.04cm -13°C 0.31mm 0.01kPa 4.5m/s
18:00
-15°C 0.01mm 100% 0cm -15°C 0.31mm 0kPa 3.1m/s
19:00
-18°C 0mm 100% 0cm -18°C 0.31mm 0kPa 1.2m/s
20:00
-20°C 0mm 100% 0cm -20°C 0.21mm 0kPa 1.1m/s
21:00
-21°C 0mm 100% 0cm -21°C 0.1mm 0kPa 0.94m/s
22:00
-23°C 0mm 100% 0cm -23°C 0mm 0kPa 0.8m/s
23:00
-20°C 0.03mm 98% 0cm -20°C 0.02mm 0kPa 1.1m/s
Wed, Feb 25 Sunrise 06:29 Sunset 17:28
24:00
-18°C 0.07mm 96% 0cm -17°C 0.04mm 0.01kPa 1.4m/s
01:00
-15°C 0.1mm 94% 0cm -15°C 0.06mm 0.01kPa 1.6m/s
02:00
-14°C 0.29mm 94% 0.23cm -13°C 0.4mm 0.01kPa 2m/s
03:00
-12°C 0.49mm 94% 0.45cm -11°C 0.73mm 0.02kPa 2.4m/s
04:00
-9.8°C 0.68mm 94% 0.68cm -9°C 1.1mm 0.02kPa 2.8m/s
05:00
-8.6°C 0.68mm 94% 0.68cm -7.8°C 1.7mm 0.02kPa 3m/s
06:00
-7.4°C 0.68mm 94% 0.68cm -6.5°C 2.4mm 0.02kPa 3.2m/s
07:00
-6.2°C 0.68mm 93% 0.68cm -5.3°C 3.1mm 0.03kPa 3.4m/s
08:00
-5.8°C 0.46mm 93% 0.45cm -4.8°C 2.4mm 0.03kPa 2.9m/s
09:00
-5.5°C 0.24mm 92% 0.23cm -4.3°C 1.6mm 0.04kPa 2.5m/s
10:00
-5.1°C 0.02mm 91% 0cm -3.8°C 0.94mm 0.04kPa 2m/s
11:00
-6.4°C 0.02mm 93% 0cm -5.5°C 0.94mm 0.03kPa 1.7m/s
12:00
-7.7°C 0.01mm 95% 0cm -7.1°C 0.94mm 0.02kPa 1.5m/s
13:00
-9.1°C 0.01mm 98% 0cm -8.8°C 0.94mm 0.01kPa 1.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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