The temperature to smoke baby back ribs varies depending on the desired tenderness and style. Here are some temperature and time guidelines from the search results:

• Smoke the ribs for 2 hours at 225°F (107°C) directly on the grate for more tender ribs.
• Smoke the ribs for 3 hours at 225°F (107°C) directly on the grate for competition-style ribs.
• Maintain a temperature of 225-250°F (107-121°C) during the cooking process when smoking baby back ribs.
• Smoke the ribs at 250°F (121°C) for about 4 hours for a general rule of thumb.

Its important to note that these are just guidelines and the actual cooking time and temperature may vary depending on factors such as the thickness of the ribs, the smoker used, and personal preference. Its recommended to use a meat thermometer to check the internal temperature of the ribs and ensure they are fully cooked.