Weather & Density Altitude
Know what the air will do — before you walk out.
yr.no + Open-Meteo + OpenWeather ensemble. Density altitude, planned-session overlay, ensemble-disagreement chip.
Three weather APIs is one weather API too many — until you realise that on a marginal Saturday morning they disagree, and that disagreement IS the information. The ensemble surfaces it as a chip; you decide what to plan for.
Density altitude is computed from temperature, pressure, and humidity for every planned session. It overlays your existing race-day timetable so the morning warm-up and the afternoon final read in the same units.
Data sources
yr.no (MET Norway) · Open-Meteo · OpenWeather
What's included
- Three-source ensemble — disagreement is a signal, not a bug
- Density altitude (DA) computed per planned session
- Planned-session overlay on race-day timetable
- Archive lookup — historical conditions for any session you've previously logged
- Jetting recommendations move with DA in real time
Try Pro free for 14 days.
No card required. Cancel any time from inside the app.