Two separate sources of climate data have confirmed that this April was the warmest April ever recorded — and the world’s average temperature was the highest on record for the January-April period: 2010: Warmest year on record so far.

Two separate sources of temperature data – the National Climatic Data Center and NASA – report that, through April, 2010 is the warmest year ever recorded.

The climate center (NCDC) reports that the Earth’s combined land and ocean average surface temperature from January-April was 56 degrees, which is 1.24 degrees above the 20th-century average. …

NASA’s Goddard Institute for Space Studies also reports that 2010, so far, is the warmest out of 131 years. Both NCDC and NASA use data that goes back to 1880.