What happened: Haas F1 monitored fluctuating weather conditions ahead of the São Paulo Grand Prix start at Autodromo Jose Carlos Pace. Mixed forecasts left teams preparing for either dry running or sudden downpours at lights out.

Why it matters: Rain at Interlagos historically creates volatile running order shifts and unpredictable tire strategy windows. Wet conditions also elevate crash risk and safety car interventions on the technical Brazilian circuit.

What to watch: Teams will make final tire compound choices on the grid as track temperatures and precipitation evolve before the formation lap.