Millions of people in the West are experiencing a dangerous and historic October heatwave with temperatures so extreme they’d be considered hot during the peak of summer. The heat has been so potent the United States soared to and tied the highest temperature ever seen in the month of October on Tuesday. At least 125 places from the West Coast to the Rockies have tied or broken all-time October heat records since the month began. Many others have set daily high temperature records. It’s another reminder that extreme heat is no longer confined to the summer as the world warms due to fossil fuel pollution. 

Other heat and weather articles:

• Vox: Get used to more absurdly hot Octobers
• Newsweek: California now ‘dangerously hot’—excessive heat warnings going into Friday
• San Francisco Chronicle: California’s record-shattering heat wave explained in five numbers
• Active NorCal: La Niña could spell trouble for California’s water supply and increase flood risk, experts warn