A 10-day view is useful for travel packing and weekend planning, but it is not a contract. Models agree more on day two than on day nine, and free-tier upstream feeds often stop short of a full decade of high-resolution daily rows.
On meridian, near-term days carry richer detail from the One Call feed. Days further out may use an extended daily horizon that fills the calendar for structure while staying honest about what OpenWeather’s free window actually returns.
Treat the far end as a direction of travel: warmer or cooler than today, wetter pattern or not — not as precise shower timing. Refresh closer to the date when the plan turns into a booking.
City detail keeps Today, Hourly, and Daily tabs separate so you can zoom into confidence you can use, then step back to the longer ribbon when you only need a rough sense of the week ahead.
