Higher track temperature can reduce tyre life and shift the balance between front and rear grip, often making the car slide more and overheat its surfaces. Cooler conditions usually give the tyres and brakes more margin, allowing drivers to lean harder on the car for longer, but they can also make warm-up more difficult and punish aggressive out-laps.

Wind changes can alter aero stability, braking confidence, and traction on corner exit, especially in high-speed direction changes and braking zones. A headwind can add downforce and shorten braking distances, while a tailwind can reduce stability and extend them, so even small shifts in strength or direction can completely change how a driver attacks the same corner.

Humidity changes can affect how dense the air is around the car, which in turn influences engine efficiency, cooling performance, and even how quickly tyres and brakes shed heat. Over a long stint, a rise in humidity can push cooling systems closer to their limit and slightly reduce power, while a drop can open up a more aggressive engine or aero setup window.

Pressure trends often signal broader weather shifts such as approaching fronts or storms, which can change both air density and wind behaviour. As pressure moves, the car's aero balance and power unit efficiency can subtly change, so tracking it helps explain why the same setup might feel stable in one run and more nervous or sluggish in another.