The automatic weather meter simultaneously measures atmospheric temperature, atmospheric humidity, air pressure, wind speed, wind direction, solar radiation, illuminance/ultraviolet rays, dust concentration and precipitation. The temperature, humidity and air pressure sensors are placed inside the radiation shield. The wind speed and direction of the ultrasonic principle. Rainfall detection by 24G radar can quickly detect rainfall and intensity. The system can be installed with a built-in GPS global positioning module and electronic compass, which can well indicate latitude, longitude and relative speed, and can calculate real and virtual wind speed and direction. It is especially suitable for installation on motion vectors, such as special vehicles or ships.