Update app.py

app.py

@@ -66,8 +66,11 @@ class EnhancedOceanClimateAgent:
         if not station_id:
             return None, "Station not found"
         
-        end_date = datetime.now()
+        # Ensure end_date is not in the future (NOAA does not support future data)
+        today = datetime.utcnow().replace(hour=0, minute=0, second=0, microsecond=0)
+        end_date = min(datetime.utcnow(), today)
         start_date = end_date - timedelta(days=days_back)
+
         
         # Available NOAA products
         products_to_fetch = {