Sunrise, Mt Rainier
46.9159°, -121.6425°
Best time:6:42 AM
81%
Never miss the fog
Fog-Index alerts you up to 7 days ahead when cinematic fog is likely at your favorite spots, so you can chase the atmosphere, not the forecast.
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14 days free · No credit card required
Intelligent Alerts
Get notified up to 7 days in advance when fog conditions are developing at your locations.
Custom Locations
Save up to 15 of your favorite photography spots and monitor conditions at each one.
Predictive Models
Dedicated algorithms for radiation, valley, and marine fog — tuned to your location's terrain and coast proximity.
Nothing transforms a landscape like fog.
It turns the mundane into the mystical. If you're anything like me, you live for those mornings when the atmosphere is the art.
How many perfect foggy mornings have you missed?
Fog is complex and hard to predict
Fog formation depends on the delicate interplay of dozens of atmospheric variables. Small shifts in temperature, humidity, wind, or pressure can mean the difference between a mystical morning and a clear sky.
Dew Point Depression
Relative Humidity
Temperature
Wind Speed
Wind Gusts
Cloud Cover
Atmospheric Pressure
Visibility
Time of Day
Terrain Type
Seasonal Patterns
Wetness Memory
Temperature Drop
DPD Trend
Cloud Prep Window
Powered by
Open-MeteoICON Model
Tomorrow.ioFog Detection
NWS / NOAAFog Advisories
Custom fog scoring algorithms
Radiation FogClear-sky radiative cooling
Valley FogTerrain-driven cold air pooling
Marine FogCoastal advection patterns
Custom variables and algorithms highlighted in blue
Existing solutions don't cut it
Despite living in a golden age of data, photographers still miss the best atmosphere. Why? Because standard tools aren't built for us.
General Weather Apps | The NWS & Aviation | Niche Sunrise/Sunset Tools | |
|---|---|---|---|
| Examples | Accuweather, Windy | NOAA, National Weather Service | Skyfire, Escaype |
| Focus | Global Data Visualization | Transport Safety | Golden Hour Color |
| The Flaw | “Pull” based with no dedicated fog detection. They have the raw data, but require you to manually open the app, navigate to each location, and interpret 5-7 variables every single day. | Optimized for hazardous, zero-visibility conditions, not photogenic mist. By the time a “Dense Fog Advisory” appears, it's often too late and too widespread for a specific valley shot. | Groundbreaking for predicting color, but they don't forecast fog. More importantly, they lack proactive alerting, requiring daily manual checks. |
| The Result | ✗You spend time checking apps instead of shooting | ✗You miss the nuanced, photogenic conditions | ✗You miss misty mornings without colorful sunrises |
That's why I built Fog-Index.
After years of checking weather apps every morning only to arrive too late or not at all, I went deep into atmospheric science and built a scoring engine optimized for the one thing we actually care about: photogenic fog.
Multiple scoring algorithms — radiation, valley, and marine — each pulling from industry-leading weather APIs to crunch over 15 atmospheric metrics into a single fog probability score. Continuously refined against real-world conditions, it's a set-it-and-forget-it alert system built for those perfectly mystical mornings.
— James Lorentson
Photographer & Fog-Index Creator
Ready to stop missing foggy mornings?
Join other fog-loving nature photographers and cinematographers who trust Fog-Index to alert them when conditions align.
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