Weather station guide
Tempest sea-level pressure in myTempest
myTempest displays calibrated sea-level pressure because that is the pressure value most users expect when comparing a home weather station to public forecasts, maps, and nearby official observations.
Why sea-level pressure matters
Raw station pressure changes with elevation. Sea-level pressure estimates what the pressure would be at sea level, making it easier to compare readings across locations and with forecast products.
How myTempest treats pressure
The dashboard replaces the primary pressure card with calibrated sea-level pressure when enough station and context data are available, while keeping the display simple for quick reading.
Questions people ask
Why not show raw station pressure first?
Most dashboard users compare pressure with forecasts and weather maps, which generally use sea-level pressure.
Does this change the Tempest sensor reading?
No. It changes how pressure is displayed in the dashboard, not the device measurement itself.