A fan assembly for an umbrella including a first integrated sub-assembly clampable about an umbrella pole. The first integrated sub-assembly has a split collar surrounding the umbrella pole, a support housing on a lower end of the collar defining a drive ring support plate, and a motor housing enclosing a motor therein on an upper end of the collar spaced from the drive ring support plate. A second integrated sub-assembly is rotatably disposable about the collar and the umbrella pole and includes a drive ring having a lower surface which is supported by the drive ring support plate of the support housing, a drive ring drive mechanism, and a plurality of fan blades coupled to the drive ring.