If you thought this July was just toasty, you probably didn’t realize you were living through the hottest month in modern history. On Friday, the National Oceanic and Atmospheric Administration declared July 2021 the world’s hottest month in 142 years of records.
The combined land and ocean-surface temperature this July was 1.67 degrees Fahrenheit above the 20th-century average, NOAA found. This was 0.02 degrees higher than the previous record tied in July 2016, July 2019 and July 2020. The agency said 2021 will likely rank among the top 10 warmest years on record.
Monthly surface temperatures analysis from NASA also showed the global mean temperature anomaly for July 2021 was about 1.66 degrees above the 1951-1980 July average.
Extreme heat plagued the Northern Hemisphere in particular during July. NOAA determined the land-surface temperature in the Northern Hemisphere was 2.77 degrees above average, the largest departure ever observed for the month.
In July, at least five heat domes scorched various regions of the Northern Hemisphere at once. Record highs were set in Turkey, which has recently been hit with devastating fires. Northern Japan broke records, while Olympic athletes sweltered under exceptional warmth. Northern Ireland broke all-time heat records twice in five days.
Heat waves also continued to bake the Pacific Northwest in North America, after the region hit all-time temperature records in late June. Heat domes also stretched across the contiguous United States, spiking temperatures above 100 degrees in the central states.
Overall, NOAA data showed Asia experienced its hottest July on record, while Europe experienced its second hottest July. July 2021 ranked in the top 10 warmest for North America, South America, Africa and Oceania.
The news comes after a landmark report about climate science was issued by the United Nations on Monday. The Intergovernmental Panel on Climate Change report shows clear evidence on how humans have changed our climate — including with extreme heat events.
The heat hasn’t slowed down in August. Just this week, a weather station in Sicily may have recorded Europe’s new all-time high heat at 119.8 degrees. Greece also experienced a hot spell dubbed “the worst heat wave since 1987.”