A gutter cleaning apparatus cleans debris from a gutter having a concave channel for collecting and guiding water from a roof of a building with a water permeable platform for mounting in the gutter at a selected spacing above a floor of the gutter, and an air flow guide engaged to an end of the platform, the guide having an outlet end with lower and upper portions for directing air flow respectively under and over the platform to lifting and remove debris from an upper surface of the platform, the platform extending at least partly into the outlet end for dividing the outlet end into the lower and upper portions, and the guide having an inlet for receiving a forced air flow.