U.S. officials say July was Earth’s hottest month on record, smashing old marks.
July’s average temperature was 16.5 Celsius (61.86 Fahrenheit), beating the previous global mark set in 1998 and 2010 by about one-seventh of a degree. That’s a large margin for weather records.
The only land area to see lower-than-average temperatures in the January-to-July period was part of eastern Canada.
Records go back to 1880, but nine of the 10 hottest months on record have happened since 2005.
The first seven months of 2015 are the hottest January-to-July span on record. This chart measures annual deviations from the average temperature from 1880 to now:
National Oceanic and Atmospheric Administration climate scientist Jake Crouch says it is quite likely that 2015 will end up the hottest year on record, beating last year. Crouch says this reaffirms that the Earth is warming, with a boost this year from an El Nino warming of the Pacific Ocean.
(Explained: El Nino and what it means for the coming winter)