diff --git a/app.py b/app.py
index 787e819..444210e 100644
--- a/app.py
+++ b/app.py
@@ -540,26 +540,6 @@ def wind_direction_name(degrees):
     idx = round(float(degrees)/22.5) % 16
     return dirs[idx]
 
-def weather_icon(cloud_pct, precip_mm, rain_prob, temp_c):
-    """Return the icon key for static/icons/{key}.png."""
-    # Snow / sleet
-    if temp_c is not None and temp_c <= 2 and (
-        (precip_mm and precip_mm > 0.1) or (rain_prob and rain_prob >= 40)
-    ):
-        return "schnee"
-    # Rain with some sun visible (showers)
-    if (precip_mm and precip_mm > 0.1) or (rain_prob is not None and rain_prob >= 50):
-        return "wolkig(1)" if (cloud_pct is None or cloud_pct < 75) else "regen"
-    # Light rain probability: showers icon when partially cloudy
-    if rain_prob is not None and rain_prob >= 30 and cloud_pct is not None and cloud_pct > 50:
-        return "wolkig(1)"
-    # Cloud cover only
-    if cloud_pct is not None:
-        if cloud_pct > 80: return "wolkig"
-        if cloud_pct > 50: return "wolke"
-        if cloud_pct > 20: return "wolkig(2)"
-    return "sonne"
-
 def get_mosmix_forecast(lat, lon, hours=72):
     cache_key = (round(lat,2), round(lon,2), hours)
     if cache_key in _forecast_cache: