Sky
High cloud, low cloud, total cloud cover, rain, showers, and storms.
Landscape and seascape planning
PhotoSignal
Know when your locations are worth watching
PhotoSignal monitors weather, light, marine, moon, and space-weather signals, then turns them into photography alerts using calculated models and custom recipes.
Weather data is only the beginning
PhotoSignal connects forecast values, timing windows, location context, and photography-specific models into alerts you can actually use.
Watch for fog and frost, rain clearing, moon timing, useful cloud windows, tide and marine overlaps, aurora potential, calm reflections, and your own custom recipes.
What PhotoSignal monitors today
Useful photography windows are often narrow. PhotoSignal watches weather and timing signals that matter when planning outdoor shoots.
Atmosphere
Fog possibility, visibility, humidity, temperature, dew point, and weather-code patterns.
Motion
Wind speed, calm windows, waves, swell, and marine conditions.
Timing
Sunrise, sunset, twilight, moon events, tide windows, and KP index activity.
Calculated models and custom recipes
Some useful photography signals are not a single forecast number. They depend on combinations of weather, timing, location, thresholds, and how conditions change.
Pre-built models
Fog and mist
Visibility, humidity, dew point, wind, timing, and marine or radiation-style signals.
Frost and hoarfrost
Cold, humid, low-wind mornings where frost or hoarfrost may be worth watching.
Rain clearing
Wet weather easing near sunrise or sunset, with improving rain and weather-code signals.
Moon timing
Moonrise or moonset lining up near sunrise or sunset windows.
Recipes you can create yourself
High cloud sunset
Low rain risk, limited low cloud, and useful high cloud near the evening light.
Forest atmosphere
Fog possible, light wind, and sunrise timing for misty forest or valley conditions.
Frosty morning
Cold air, high humidity, low wind, and sunrise timing for frost or hoarfrost potential.
Seascape timing
Tide window, swell, wind, and sunrise or sunset timing for coastal planning.
How it works automatically
Save locations
Choose the photography locations you care about and want PhotoSignal to monitor.
Define recipes
Use built-in models or create alert recipes for the forecast windows you want to watch.
Get updates
PhotoSignal refreshes forecasts on a schedule and sends grouped email updates when windows match.
If the forecast changes and a previously detected opportunity no longer matches, cancellation updates can be sent. PhotoSignal watches the forecast; you decide whether the window is worth acting on.
What an alert tells you
PhotoSignal is designed to show the useful window, the reason it matched, and the conditions that may weaken the opportunity.
Signal
What matched
The alert explains conditions, such as possible fog, rain clearing, high cloud near sunset, or a tide and light overlap.
Timing
When to watch
Alerts are tied to practical windows such as sunrise, sunset, twilight, moon events, tide timing, or a specific forecast period.
Context
Why it triggered
PhotoSignal includes the supporting forecast values so you can see what caused the match instead of trusting a black-box score.
Caution
What may work against it
Wind, rain, low cloud, changing forecasts, or weak confidence can be shown alongside the opportunity.
Forecast data and interpretation
Forecast and environmental data may come from sources such as Open-Meteo, Stormglass, and space-weather data providers. PhotoSignal then interprets those signals through photography-specific alert rules.
The app is not just a place to view raw weather data. Its purpose is to connect weather, timing, and location context into useful planning signals.
Forecasts are useful. They are not promises.
Cloud, fog, coastal weather, aurora activity, and local conditions can change quickly. Forecast models can miss real-world conditions, especially when the useful photographic window is small or highly local.
PhotoSignal is designed to reduce manual checking and surface promising windows. It should support your judgement, not replace it.