A relentless heatwave is sweeping across the United States, bringing scorching temperatures and dangerous conditions from coast to coast. Millions of Americans are under excessive heat warnings and advisories as daytime highs soar into the triple digits in parts of the South, Southwest, and Midwest. Cities like Phoenix, Dallas, and Atlanta are experiencing record-breaking heat, while even northern states are reporting unusually high temperatures and humidity. Health officials are urging people to stay indoors during peak afternoon hours, stay hydrated, and check on vulnerable populations such as the elderly and young children. The searing conditions are also putting a strain on power grids, with increased demand for air conditioning raising concerns about outages. As climate experts warn that extreme heat events are becoming more frequent and intense, this latest heatwave serves as another reminder of the growing impact of climate change across the country.