First Alert Action Day warns of dangerous heat in La Paz County

Extreme heat and humidity kept La Paz County under a First Alert Action Day through Thursday night, with afternoon temperatures projected to run from 105 to 115 degrees across the lower Colorado River region. The highest risk fell on outdoor workers, older adults, people without reliable air conditioning, river users and drivers on I-10 and U.S. 95, where long stretches of open road and exposed pavement can turn a normal trip into a heat emergency.

For Parker, Ehrenberg, Quartzsite and Bouse, the message was to treat the afternoon hours as hazardous, not merely uncomfortable. National Weather Service heat messaging for the region described dangerously hot and humid conditions and put Parker Valley and Yuma under a Moderate to Major Heat Risk, with Imperial Valley in California also in the danger zone. The weather service says heat-related illnesses increase significantly during extreme heat events, a warning that fits the kind of conditions that can push body temperatures up quickly and make it hard to recover once dehydration starts.

Local forecast data underscored how punishing the week was shaping up to be. One weather source showed Ehrenberg with July highs ranging from 104 to 117 degrees and overnight lows from 81 to 88 degrees. Another climate source put Quartzsite’s temperatures up to 109 degrees and its annual precipitation at about 5 inches, a reminder that much of La Paz County enters summer with little moisture to blunt the heat. In that setting, vehicles can overheat, pets can burn paws on hot pavement, and even routine errands or work shifts can become unsafe without breaks, shade and water.

The danger also fit a larger Arizona pattern. The state’s July 2024 climate summary ranked the month as the second warmest July on record, and La Paz County was among the counties that experienced its hottest July. Maricopa County’s Department of Public Health reported 602 confirmed heat-related deaths in 2024, down from 645 in 2023, a scale that shows how severe heat has become as a public-health threat in Arizona. Arizona Department of Health Services guidance continues to stress heat safety during extreme weather, and the recurrence of multiple extreme heat warnings across Arizona in July 2026 made clear that La Paz County was once again facing a familiar, dangerous summer pattern.