Food freshness is a critical factor influencing public health, food safety, and the reduction of food waste across domestic, commercial, and industrial environments. Traditional freshness assessment methods based on visual inspection, odor perception, and expiration labels are often subjective, inconsistent, and incapable of detecting early stages of spoilage. This study presents a Real-Time Food Freshness Detector that integrates MQ-series gas sensors, a DHT11 temperature and humidity sensor, a