diff --git a/.env.example b/.env.example
index f2dd1d6d..36c68bc1 100644
--- a/.env.example
+++ b/.env.example
@@ -15,7 +15,12 @@ GROQ_API_KEY=your_groq_api_key_here
 
 # Meteoblue
 METEOBLUE_API_KEY=your_meteoblue_api_key_here
-METEOBLUE_CACHE_TTL_SEC=1800
+METEOBLUE_CACHE_TTL_SEC=7200
+
+# Open-Meteo (forecast data changes ~hourly, no need to refresh more often)
+OPEN_METEO_CACHE_TTL_SEC=7200
+OPEN_METEO_ENSEMBLE_CACHE_TTL_SEC=7200
+OPEN_METEO_MULTI_MODEL_CACHE_TTL_SEC=7200
 
 # Proxy Setting (optional)
 HTTPS_PROXY=http://127.0.0.1:7890