What is the maximum time food can be safely left out at room temperature?

The maximum time that food can be safely left out at room temperature is generally recognized as two hours. This timeframe is crucial because bacteria can grow rapidly in the danger zone, which is defined as temperatures between 41°F and 135°F (5°C and 57°C). During the first two hours of being left out, the risk of foodborne illness increases significantly.

After this two-hour mark, if food remains at room temperature, the potential for harmful bacteria to multiply to dangerous levels rises sharply, especially in foods that are perishable. This guideline helps ensure that food is consumed or stored in a safe manner to minimize the risk of foodborne illnesses. It's important to stay vigilant, especially during events or gatherings where food is out for extended periods. For foods left out beyond this threshold, it is recommended to discard them to ensure safety.