1. A method of providing a report of a weather condition at a location remote from an aircraft, the method comprising: selecting, on a display screen, an area associated with the report; selecting a camera source associated with the area, wherein the camera source is a passive infra-red or visible light camera; determining the weather condition at the area using data from the camera source, the data from the camera source representing an image at the area passively sensed by the camera source, wherein the weather condition is determined by processing the data from the camera source to determine edges in the image, wherein the data is compared to calibration data for the area to determine the weather condition, wherein the calibration data is compared to the data from the camera source to determine if a geographic feature in the calibration data is present and wherein the calibration data is associated with a clear view, wherein the edges are used to determine the weather condition, wherein presence of the edges is an indication of whether structures or landmarks associated with the area are hidden or partially hidden by the weather condition; and displaying the weather condition on the display screen.