diff --git a/data_logging/src/data_logging/cli.py b/data_logging/src/data_logging/cli.py
new file mode 100644
index 0000000..2338653
--- /dev/null
+++ b/data_logging/src/data_logging/cli.py
@@ -0,0 +1,78 @@
+import argparse
+import time
+import sys
+from datetime import datetime
+from pathlib import Path
+import os
+from data_logging.core import log_data
+
+
+def parse_args() -> argparse.Namespace:
+    """Parses command line arguments for interval and output path."""
+    parser = argparse.ArgumentParser(description="Donau2Space Environmental Data Logger CLI")
+    parser.add_argument(
+        "--interval",
+        type=int,
+        required=True,
+        help="Measurement interval in seconds",
+    )
+    parser.add_argument(
+        "--output",
+        type=str,
+        required=True,
+        help="Path to output JSON file",
+    )
+    args = parser.parse_args()
+
+    if args.interval <= 0:
+        parser.error("--interval must be a positive integer")
+
+    output_path = Path(args.output)
+    if not output_path.parent.exists():
+        try:
+            output_path.parent.mkdir(parents=True, exist_ok=True)
+        except Exception as e:
+            parser.error(f"Failed to create output directory: {e}")
+
+    return args
+
+
+def main() -> None:
+    """Runs the periodic data logging loop."""
+    args = parse_args()
+    output_file = args.output
+    interval = args.interval
+
+    print(f"Starting Donau2Space logger: interval={interval}s, output={output_file}")
+
+    try:
+        while True:
+            try:
+                # Simulated sensor reading (replace with actual sensor input in production)
+                temperature_input = input("Enter temperature (°C): ").strip()
+                wind_speed_input = input("Enter wind speed (km/h): ").strip()
+
+                try:
+                    temperature = float(temperature_input)
+                    wind_speed = float(wind_speed_input)
+                except ValueError:
+                    print("Invalid input. Please enter numeric values.")
+                    continue
+
+                timestamp = datetime.utcnow()
+                log_data(timestamp, temperature, wind_speed)
+
+                print(f"Logged data at {timestamp.isoformat()} -> T={temperature}°C, W={wind_speed}km/h")
+                time.sleep(interval)
+
+            except KeyboardInterrupt:
+                print("\nLogging stopped by user.")
+                break
+
+    except Exception as e:
+        print(f"Error occurred during logging: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()