It is situated beside the A40/A4180 roundabout junction near RAF Northolt between Ruislip and Northolt in the County of Middlesex, in the London Borough of Hillingdon.

The Polish Air Force Memorial was unveiled on 2 November 1948, to honour and commemorate the Polish airmen killed during the Second World War while under British Command. The Memorial depicts the Polish Air Force emblem of a large bronze eagle, with its wings spread wide, ready to take off from the top of a tall Portland stone Obelisk. The fourteen wartime Polish Air Force squadrons, and the battles in which they took part, are embossed in bronze letters on the front face.

To the rear is a sunken semi-circular walkway flanked by two walls of granite. These are engraved with the names of 2165 Polish airmen lost while under British Command, together with the insignias of the individual Polish Air Force wartime squadrons. There is also an inscription of the names of the 23 Polish airmen lost during the French campaign of 1940. The Memorial is fronted by a shallow ornamental pond surrounded by a paved walkway and adjacent grassed area and flower beds within a gated iron boundary fence.

The Memorial is close to the southeast perimeter corner of RAF Northolt, the home of seven Polish fighter squadrons at different times during the war, including the 1st Polish Wing.
The main entrance, through a cast iron gate on stone posts, is on the corner of the A4180 West End Road at the junction with the A40 Western Avenue roundabout. The roundabout is locally known, unsurprisingly, as the "Polish War Memorial roundabout". There is provision for restricted free parking on the adjacent access road. The nearest Underground and Mainline railway station is South Ruislip, a distance of approximately 1,200 yards and about a 14 minute walk.

This prominent local heritage landmark has its own "Polish Air Force Memorial" sign beside the A40 trunk road in and out of London and regularly features in traffic reports on the radio.

In 2015, to commemorate the 75th anniversary of the Battle of Britain, the London Borough of Hillingdon, in partnership with the Polish Embassy in London, developed and created the Polish Air Force Memorial Remembrance Garden on an area of land on the west side of the Memorial boundary. This ornamental garden, with bench seating, includes trees, native hedges, wildflower meadows and a natural pond. It creates a diverse habitat for many different species of wildlife. The Memorial Garden, has a national Green Flag Award.