surface soil by an instrument called "Infrared Thermometer”. The relative humidity through an instrument called "Thermohygrometer
HD100". The time interval in the measurements is two hours. A total of two measuring stations, representing open
street with two different soil coatings (asphalt and concrete), are chosen in the city of Biskra. Such research is needed to find
reliable ways to determine the energy balance in an urban environment in the future.