PHOENIX (AP) — Maricopa County is bracing for soaring temperatures as the National Weather Service issued an excessive heat warning, effective from 12:04 p.m. on July 16 until 8 p.m. on July 19. Forecasts predict temperatures surpassing 110 degrees throughout the week.

A surge in heat over the past decade has been recorded in the Southwest, according to federal climate data. Meteorologists attribute the region's notable increase, the highest in the country, to the impact of global warming.

Phoenix and its neighboring areas are experiencing intensified heat due to the urban “heat-island” effect, where the absorption of sun's heat by asphalt, concrete, and roofs in urban areas escalates temperatures. This phenomenon renders these areas significantly hotter compared to the adjacent desert.

With the rising mercury, the Arizona Department of Health Services advises residents to stay vigilant to prevent heat-related illnesses:

• Hydrate: Consume a minimum of 2 liters of water daily when indoors. Those engaging in outdoor activities should drink 1 to 2 liters per hour spent outside.
• Dress appropriately: Opt for lightweight, light-colored attire. Apply sunscreen on exposed skin and use hats or umbrellas when outdoors.
• Eat sensibly: Consume small meals frequently and avoid high-protein foods that can raise metabolic heat.
• Watch out: Regularly check on friends, relatives, and others for symptoms of heat exhaustion or stroke.
• Plan your day: Reserve physically demanding tasks for the day's cooler hours, between 4 and 7 a.m.
• Stay indoors: To avoid the extreme heat.
• Take breaks: Rest in a cool location when performing outdoor physical activities on hot days.

The imminent high temperatures underline the importance of understanding the distinctions between heat stroke, heat exhaustion, and dehydration.