Temporally　and　spatially　resolved　density　profiles　of　Cu　atoms,　electrons,　and　compressed　air,　from　laser-induced　copper　plasmas　in　air,　are　measured　using　fast　spectral　imaging　and　two-color　interferometry.　From　the　intensified　CCD　images　filtered　by　a　narrow-band-pass　filter　centered　at　515.32　nm,　the　Cu　atoms　expansion　route　is　estimated　and　used　to　determine　the　position　of　the　fracture　surface　between　the　Cu　atoms　and　the　air.　Results　indicate　that　the　Cu　atoms　density　at　distances　closer　to　the　target　(0-0.4　mm)　is　quite　low,　with　the　maximum　density　appearing　at　the　edge　of　the　plasma＇s　core　being　similar　to　4.6　x　10(24)　m(-3)　at　304　ns.　The　free　electrons　are　mainly　located　in　the　internal　region　of　the　plume,　which　is　supposed　to　have　a　higher　temperature.　The　density　of　the　shock　wave　is　(4-6)　x　10(25)　m(-3),　corresponding　to　air　compression　of　a　factor　of　1.7-2.5.　Published　by　AIP　Publishing.