diff --git a/app/api/wetter/route.ts b/app/api/wetter/route.ts
index 21fe0e3..e454279 100644
--- a/app/api/wetter/route.ts
+++ b/app/api/wetter/route.ts
@@ -4,8 +4,13 @@ import { getSession } from '@/lib/session';
 export async function GET() {
   const session = await getSession();
   if (!session) return NextResponse.json({ error: 'Nicht angemeldet' }, { status: 401 });
-  const temp = Math.round((8 + Math.random() * 15) * 10) / 10;
-  const feuchte = Math.round((40 + Math.random() * 50) * 10) / 10;
-  const druck = Math.round((990 + Math.random() * 30) * 10) / 10;
+
+  const res = await fetch('https://stwwetter.fuerst-stuttgart.de/api/weather/latest', { cache: 'no-store' });
+  if (!res.ok) return NextResponse.json({ error: 'Wetterdaten nicht verfügbar' }, { status: 502 });
+
+  const data = await res.json();
+  const temp = Math.round(data.temperature * 10) / 10;
+  const feuchte = Math.round(data.humidity);
+  const druck = Math.round(data.pressure);
   return NextResponse.json({ temp, feuchte, druck });
 }