Update: Denver and the Eastern Plains placed under a heat advisory Friday and Saturday

Published Jun 19, 2025

The National Weather Service released an updated heat advisory at 4:34 a.m. on Thursday valid from Friday 11 a.m. until Saturday 6 p.m. for Denver and the Eastern Plains.

The NWS adds to anticipate, “High temperatures near 100 degrees across the I-25 Urban Corridor, and up to 103 across the eastern plains.”

“Hot temperatures may cause heat related illnesses,” says the NWS.

The full list of affected locations includes:

• Larimer County below 6,000 feet/Northwest Weld County

• Boulder/Jefferson counties below 6,000 feet/West Broomfield County

• North Douglas County below 6,000 feet/Denver/West Adams and Arapahoe counties/East Broomfield County

• Elbert/central and east Douglas counties above 6,000 feet

• Northeast Weld County

• Central and South Weld County

• Central and East Adams and Arapahoe counties

• North and Northeast Elbert County below 6,000 feet/North Lincoln County

• Southeast Elbert County below 6,000 feet/South Lincoln County

• Morgan County

• Logan County

• Washington County

• Sedgwick County

• Phillips County

Tips from the NWS for staying safe during a heat wave

Stay hydrated: Keep yourself well-hydrated by drinking plenty of fluids.

Seek shelter: Stay indoors in an air-conditioned room to keep cool.

Avoid sun exposure: Stay out of the sun, and make sure to check up on relatives and neighbors.

Child and pet safety: Never leave young children and pets unattended in vehicles, especially when car interiors can reach lethal temperatures within minutes.

Caution outdoors: Take extra precautions if you work or spend time outside.

Select the ideal time: When possible, reschedule strenuous activities to early morning or evening.

Recognize heat-related issues: Recognize the warning signs and familiarize yourself with symptoms of heat exhaustion and heat stroke.

Stay cool with clothing: Wear lightweight and loose-fitting clothing to stay cool.

Additional tips for outdoor workers:

• For outdoor workers, the Occupational Safety and Health Administration (OSHA) recommends regular rest breaks in shaded or air-conditioned areas.

• If someone is overwhelmed by the heat, swiftly relocate them to a cool, shaded location.

• In emergencies, call 911 for immediate assistance.

These NWS heat safety recommendations are vital for your well-being during periods of high temperatures. Stay informed and take the necessary steps to protect yourself and others from the heat’s potentially dangerous effects.

Source: The National Weather Service