Over the last two years atmospheric measurements of methylchloroform (CH3CCl3) have been made at six locations using EC/GC techniques. The concentrations are reported, and it is shown that CH3CCl3 concentrations increased at rates of 3.8%¿2.1% per year at Alaska (~70¿N between 8/79 and 1/81, 6.6%¿3.2% per year at Oregon (~45¿N) between 1/79 and 1/81, 4.3%¿4% per year at Hawaii (24¿N) between 11/79 and 1/81, 4.1%¿4.8% per year at Samoa (14¿S) between 2/80 and 1/81, 11.5%¿1.5% per year at Tasmania (42¿S) between 1/79 and 6/80, and at 8.7%¿5.7% per year at the south pole between 1/79 and 1/81. These recent yearly increases are smaller than earlier rates of increase but are consistent with a lifetime of ~7 years (6 years-10 years) and a decline in the rate of global emissions.