The National Weather Service has issued a heat advisory for Western Oregon from Tuesday morning through Wednesday evening. High temperatures are expected to be in the mid to upper 90s on both days.
Rebecca Muessle, a meteorologist with the Portland office of the National Weather Service, said people should be careful to drink lots of water and know the signs of heat exhaustion and heat stroke, which can come on quickly.
Related: Heat and health: Here’s what to watch for when temperatures climb
With holiday activities and elevated fire danger, Muessle said to be cautious of anything that could spark, including fireworks, campfires, grills and parking cars in dry grass.

A file photo of fireworks above downtown Portland. A heat advisory is in effect for Independence Day and July 5, 2023.
Lizzy Duffy / OPB
“We recommend if you have a campfire, never leave that unattended,” she noted, adding, “Make sure that you have a hose or some way to extinguish fireworks properly, knowing any local burn bans or firework bans, and listening to those bans, because they’re put in place for a very important reason.”
Muessle said, on the positive side, overnight temperatures are expected to dip into the upper 50s, providing some relief.
A number of communities across the state are setting up cooling centers across the state. Check with your local city or county government for locations.
OPB contributed to this story.