The present invention relates to an air delivery system for providing cleaned and cooled air to a specified zone, such as a street canyon or other public space, comprising a) an air cleaning unit having an inlet and an outlet, wherein the inlet is adapted to receive ambient air or cooled air and the outlet is adapted to provide the cleaned and cooled air or the cleaned air, and b) an air cooling unit having an inlet and an outlet, wherein the inlet is adapted to receive ambient air or cleaned air and the outlet is adapted to provide the cleaned and cooled air or the cooled air; wherein the inlet of the cooling unit is connected to the outlet of the air cleaning unit, or wherein the outlet of the cooling unit is connected to the inlet of the air cleaning unit; or c) a unit for cleaning and cooling air simultaneously, having an inlet and an outlet, wherein the inlet is adapted to receive ambient air and the outlet is adapted to provide the cleaned and cooled air.