Western U.S. Heat Wave Keeps Record Temperatures and Wildfire Risk Elevated

A heat wave affecting parts of the western United States is bringing dangerous heat, threatening temperature records and increasing wildfire concerns, according to reporting published Aug. 1, 2026, and weather forecast material current to early August.

The National Weather Service was issuing dangerous-heat warnings for affected areas as several cities were forecast to reach record highs. The heat wave was also linked to hotter and drier conditions that can increase wildfire danger and make emergency response more difficult.

Las Vegas provides one benchmark for the severity of the conditions. The city’s August record high was reported as 116 degrees Fahrenheit. Its all-time record high was reported as 120 degrees, set in July 2024.

Forecasts and warnings are the next key developments for residents, emergency officials and others in affected areas. The heat wave remained active in the available early-August coverage, so local conditions may differ even within the broader western region.