A local air cleaning apparatus comprising: a push hood including an air flow opening face that blows out a cleaned uniform air flow; and a guide provided on a side of the push hood having the air flow opening face and extending from the side thereof having the air flow opening face to a downstream side of the uniform air flow to form an opening face at an end portion of the downstream side, in which the push hood is arranged such that the cleaned uniform air flow blown out from the air flow opening face passes through inside the guide and then collides with an air collision face on a downstream side of the opening face of the guide; the opening face of the guide is spaced apart from and opposite to the air collision face to form an open region between the opening face of the guide and the air collision face; and the cleaned uniform air flow blown out from the air flow opening face collides with the air collision face to flow outside the open region, so as to cause cleanliness to be higher inside the guide and inside the open region than other regions, wherein the local air cleaning apparatus comprises at least one of a device for measuring pressures inside the guide and inside the push hood, a device for measuring the cleanliness inside the guide or of the open region, and a device for measuring a gap area between the guide and the air collision face; and based on a result of the measurement, to maintain a condition of higher cleanliness inside the guide and inside the open region than other regions, the local air cleaning apparatus controls such that a flow velocity of the cleaned uniform air flow blown out from the air flow opening face can be decelerated or accelerated. a push hood including an air flow opening face that blows out a cleaned uniform air flow; and a guide provided on a side of the push hood having the air flow opening face and extending from the side thereof having the air flow opening face to a downstream side of the uniform air flow to form an opening face at an end portion of the downstream side, in which the push hood is arranged such that the cleaned uniform air flow blown out from the air flow opening face passes through inside the guide and then collides with an air collision face on a downstream side of the opening face of the guide; the opening face of the guide is spaced apart from and opposite to the air collision face to form an open region between the opening face of the guide and the air collision face; and the cleaned uniform air flow blown out from the air flow opening face collides with the air collision face to flow outside the open region, so as to cause cleanliness to be higher inside the guide and inside the open region than other regions, wherein the local air cleaning apparatus comprises at least one of a device for measuring pressures inside the guide and inside the push hood, a device for measuring the cleanliness inside the guide or of the open region, and a device for measuring a gap area between the guide and the air collision face; and based on a result of the measurement, to maintain a condition of higher cleanliness inside the guide and inside the open region than other regions, the local air cleaning apparatus controls such that a flow velocity of the cleaned uniform air flow blown out from the air flow opening face can be decelerated or accelerated.