Provided are an air cell that has a reduced environmental impact and has favorable discharge characteristics as well as a patch equipped with the air cell. An air cell of the present invention includes, an outer case, which contains a positive electrode having a catalyst layer containing a catalyst and a binder, a negative electrode containing a metal material, a separator, and an electrolytic solution. The electrolytic solution is an aqueous solution with a pH of 3 or more and less than 12. The separator has an air permeability of 10 sec/100 ml or more, or the positive electrode has a porous sheet made of carbon as a current collector. A patch of the present invention includes the air cell of the present invention as a power supply.