Unmanned Aerial Vehicle (UAV)-mounted temperature sensors can collect a large amount of valuable 3-dimensional environmental data, especially at locations unsuitable for the installation of traditional weather stations. This paper developed a novel methodology to obtain accurate ambient temperature data using a multi-rotor UAV. Firstly, air temperature sensors and a multi-rotor UAV model were selected based on the objectives of this study. Secondly, field experiments were conducted to determine the influence of in-flight multi-rotor UAV on ambient temperature, to determine the most appropriate locations for the temperature sensor, namely underneath the multi-rotor UAV center and between the landing gears. The data collection, processing, and analysis methods were thus proposed. Thirdly, the accuracy of the proposed methodology was evaluated at a target height by comparing the measured result with that measured by a nearby weather station, and comparing the vertical profile of measured data with the data released by National Environment Agency (NEA) in Singapore. A satisfactory agreement between the two results was observed with an error of between 0 and 0.3 °C. In addition, a case study was conducted to compare ambient temperatures at various heights above different ground materials utilizing the proposed methodology in a park. Besides, the correlation analysis results provided the directions to improve the measurement accuracy.

无人机（UAV）安装的温度传感器可以收集大量有价值的3维环境数据，尤其是在不适合安装传统气象站的位置。本文开发了一种使用多旋翼无人机获取准确环境温度数据的新方法。首先，根据本研究的目标，选择了空气温度传感器和多旋翼无人机模型。其次，通过现场实验确定飞行中多旋翼无人机对环境温度的影响，确定温度传感器最合适的位置，即多旋翼无人机中心下方和起落架之间。因此提出了数据收集、处理和分析方法。第三，通过将测量结果与附近气象站测量的结果进行比较，并将测量数据的垂直剖面与新加坡国家环境局 (NEA) 发布的数据进行比较，在目标高度评估了所提出方法的准确性。观察到两个结果之间令人满意的一致性，误差在 0 到 0.3 °C 之间。此外，还进行了一项案例研究，以利用公园中提出的方法比较不同地面材料上方不同高度的环境温度。此外，相关分析结果为提高测量精度提供了方向。并将测量数据的垂直剖面与新加坡国家环境局 (NEA) 发布的数据进行比较。观察到两个结果之间令人满意的一致性，误差在 0 到 0.3 °C 之间。此外，还进行了一项案例研究，以利用公园中提出的方法比较不同地面材料上方不同高度的环境温度。此外，相关分析结果为提高测量精度提供了方向。并将测量数据的垂直剖面与新加坡国家环境局 (NEA) 发布的数据进行比较。观察到两个结果之间令人满意的一致性，误差在 0 到 0.3 °C 之间。此外，还进行了一项案例研究，以利用公园中提出的方法比较不同地面材料上方不同高度的环境温度。此外，相关分析结果为提高测量精度提供了方向。