The environmental air filtration assembly includes a housing that may be coupled to the vehicle. The housing is exposed to ambient air. A filter is coupled to the housing. The filter removes pollutants from the ambient air. A processor is coupled to the housing. A motor is coupled to the housing and the processor. A fan is operationally coupled to the motor. The motor moves the fan so the fan urges the ambient air through the filter. A sensor is coupled to the housing. The sensor is operationally coupled to the processor. The sensor detects a speed of the vehicle. The sensor modifies a speed of the motor to correspond to the speed of the vehicle.