From 21b65a1e3948b448ae06324a9a48fad8d4165600 Mon Sep 17 00:00:00 2001
From: rene <mail@motocamp.de>
Date: Sat, 16 May 2026 13:53:05 +0200
Subject: [PATCH] =?UTF-8?q?Fix:=20Asphalttemperatur-Formel=20temperaturabh?=
 =?UTF-8?q?=C3=A4ngig=20(t=5Ffactor=200..1=20zwischen=205-30=C2=B0C),=20ni?=
 =?UTF-8?q?cht=20mehr=20temperaturblind?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 backend/weather.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/backend/weather.py b/backend/weather.py
index cdf09d8..9bec358 100644
--- a/backend/weather.py
+++ b/backend/weather.py
@@ -239,7 +239,9 @@ def _wind_dir(deg: float) -> str:
 
 
 def _asphalt_temp(air_max: float, uv_max: float) -> tuple[float, str]:
-    bonus = min(uv_max * 3.0, 30.0)
+    # UV-Bonus skaliert mit Temperatur: unter 10°C kaum Aufheizung, ab 30°C voll
+    t_factor = max(0.0, min(1.0, (air_max - 5) / 25))
+    bonus = min(uv_max * 3.0 * t_factor, 30.0)
     asphalt = air_max + bonus
     if asphalt <= 30:
         warn = 'safe'