This project aims to record the temperature in a dorm room at night while the fan is running. It utilizes an ESP 32 board equipped with a sensor to measure the temperature. The sensor reads the temperature periodically and converts it into Fahrenheit using a custom function. The temperature readings are then displayed on both the serial monitor and written to an SD card for later analysis. To ensure accurate temperature measurements, the dorm room fan is kept running throughout the night, providing continuous air circulation. The Arduino board is programmed to take temperature readings at regular intervals, typically every second. By leveraging the analog-to-digital conversion capabilities of the Arduino, the voltage output from the temperature sensor is converted into a temperature reading. The recorded temperature values are saved in a file named "tempData.txt" on the SD card. Each temperature reading is timestamped, allowing for the analysis of temperature fluctuations throughout the night. With the help of the serial monitor, real-time temperature updates are displayed, enabling immediate monitoring of the dorm room's temperature. This project offers a convenient and automated solution for recording and monitoring temperature variations in a dorm room at night. It can aid in identifying patterns, understanding the effectiveness of the fan in maintaining a comfortable temperature and making adjustments to improve the overall sleep environment.