So far, 2010 hottest year on record
October 15th, 2010NASA reports that 2010 has, from January through September, been the hottest year on record – hotter than 1998, hotter than 2005.

Comparison of 2010 Temperature to the Two Other Years with the Warmest Annual Means
Global annual mean surface air temperatures have been rising steadily since 1880.

Line plot of global mean land-ocean temperature index, 1880 to present, with the base period 1951-1980. The dotted black line is the annual mean and the solid red line is the five-year mean. The green bars show uncertainty estimates.