City of Seattle under a heat advisory from Sunday to Tuesday

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The NWS Seattle WA released a heat advisory at 12:38 p.m. on Thursday valid from Sunday 11 a.m. until Tuesday 5 a.m. for City of Seattle.

"Hot conditions with high temperatures up to 85 degrees to 90 degrees and low temperatures down to 60 to 65 degrees expected. This will pose a moderate risk of heat-related illness," explains the NWS. "The warmest daytime high temperatures are expected Monday afternoon and the warmest overnight lows are expected Monday night into Tuesday morning."

"Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration," explains the NWS.

This advisory is in effect until Tuesday at 5 a.m.

During heat waves, consider the following tips from the NWS

• Stay hydrated: Drink plenty of fluids.
• Stay in an air-conditioned room.
• Avoid direct sun exposure: Protect yourself and check on vulnerable relatives and neighbors.
• Protect your little ones and furry friends: Never leave young children and pets alone in vehicles, especially during hot weather when car interiors can become dangerously hot in a matter of minutes.
• Exercise caution outdoors: If you work or spend time outside, take additional safety measures.
• Optimal Timing: When possible, reschedule strenuous activities to early morning or evening.
• Recognize early indicators: Learn to identify the warning signs of heat exhaustion and heat stroke.
• Dress appropriately: Wear lightweight, loose-fitting clothing to stay comfortable.

To ensure safety during outdoor work, adhere to the Occupational Safety and Health Administration (OSHA)'s recommendations by incorporating regular rest breaks in shaded or air-conditioned environments. If someone is affected by heat, immediately transfer them to a cool and shaded area. In an emergency, call 911.

Source: The National Weather Service

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This story was originally published June 11, 2026 at 12:40 PM.