July was hottest month ever recorded in US as heatwaves scorched country

July shattered all previous temperature records to become the hottest month ever recorded in the United States. The contiguous US endured average temperatures 3.3F (1.8C) above the 20th-century norm, according to new data from the National Oceanic and Atmospheric Administration (Noaa). This record surpasses previous highs set in July 1936 and July 2012.

The nation blistered under three distinct heat dome events, which trapped soaring temperatures over large regions. Extreme heat affected the US West, the Rockies, the upper Midwest, the Gulf of Mexico coast, and the Southeast. Wyoming, for instance, recorded its hottest July ever, with temperatures 5.1F (2.8C) above average.

Scientists emphasize that the elevated heat and widespread wildfires, which blanketed parts of the US in smoke, are significantly amplified by the human-caused climate crisis. The burning of fossil fuels is driving up global temperatures, fueling deadly heatwaves that have impacted the US and Europe this summer. Sprawling forest fires have become a recurring feature of the season in North America and Europe.

The record heat has taken a toll on Americans' lives. Nearly half of those polled reported a "major" impact on their electricity bills due to increased air conditioning use. About 40% said the heat altered their travel plans, while two-thirds reported their families' outdoor activities were affected. About half also noted their exercise routines were hampered. These impacts are more widespread than two years ago, according to AP-NORC polling.

Despite the unfolding consequences of the climate crisis, former President Donald Trump has continued efforts to reduce clean energy support and boost fossil fuel production, having previously dismissed climate science.