Amid a backdrop of extreme weather events and devastating wildfires, federal and international officials this week issued dire warnings about record-setting temperatures and the worsening effects of climate change.

Last month was the planet’s warmest August on record, and the Northern Hemisphere experienced its hottest meteorological summer, the National Oceanic and Atmospheric Administration announced Thursday.

“Global marine heat waves and a growing El Niño are driving additional warming this year, but as long as emissions continue driving a steady march of background warming, we expect further records to be broken in the years to come,” read a statement from NOAA chief scientist Sarah Kapnick.