Understand Layer's weather guidance and limits

Know what Layer considers and what you still need to check before a run.

Layer interprets forecast conditions to recommend what to wear and describe how the run may feel. It does not tell you whether it is safe to run.

What Layer considers

The recommendation can account for temperature, apparent temperature, rain, wind, the length of the run, and the intensity you have planned. In hot conditions, Layer may also offer general context about effort, fluids, sun, or cooling.

That guidance is based on forecast data. Conditions can change, and a provider can return incomplete or inaccurate information.

Read the weather terms

Apparent temperature describes how conditions may feel rather than the air temperature alone. Wind can change how quickly you lose heat. Dew point describes moisture in the air; a higher dew point can make cooling through sweat harder. UV describes sun exposure, not warmth.

Use the weather explanations in Layer for the selected hour and run window. An outfit can change when you change the start time, duration or intensity even if the current air temperature stays the same.

What Layer does not replace

Layer is not a medical app and does not provide diagnosis, treatment, physiological measurement, or medical advice. Its heat and hydration notes are general guidance, not a personal medical plan.

Layer is also not a severe-weather warning system. Check an official local source for:

  • Lightning and thunderstorms
  • Air quality, wildfire smoke, and pollution
  • Flooding and severe-weather alerts
  • Trail, road, and route-specific conditions

Use the conditions you can observe

Compare the recommendation with what is happening where you are. Change your clothing, route, or plans when the real conditions no longer match the forecast. If you feel unwell, stop the run and seek appropriate help.

Still need help? Email help@layertoday.com.