Extreme Heat Warning

Locations Affected

Las Vegas, NV ∙ Henderson, NV ∙ North Las Vegas, NV ∙ Lake Havasu City, AZ ∙ Mojave Ranch Estates, AZ ∙ Kingman, AZ ∙ Overton Arm, NV ∙ Frenchman Mountain, NV ∙ Joshua Tree, CA ∙ Indian Springs, NV

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Las Vegas NV 457 AM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT /8 PM MST/ FRIDAY... * WHAT...Dangerously hot conditions with temperatures up to 115 to 118 degrees expected through Death Valley and the lower Colorado River Valley, with highs between 107 to 110 degrees elsewhere. * WHERE...Portions of northwest Arizona, southeast California, and southern Nevada. * WHEN...Until 8 PM PDT /8 PM MST/ Friday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose-fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates.

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