The Pacific Northwest is facing a dangerous heat wave this week, with temperatures expected to reach triple digits in many regions. The National Weather Service (NWS) has issued warnings and advisories for parts of Washington, Idaho, Oregon, Montana, and Northern California. The heat wave is expected to last for several days, with little relief even at night due to record-warm overnight temperatures. The NWS warns that the combination of high temperatures and the duration of the heat wave could pose a heightened health risk, especially for those without adequate air conditioning.

In Oregon, temperatures in the Willamette Valley, including Portland and Salem, could break previous temperature records for the day. Forecasters predict temperatures to peak around 106 degrees in the Portland area on Monday, possibly reaching close to 110 degrees in other areas of the region. The previous record for August 14th in Portland is 102 degrees. The excessive heat warning extends to the Upper Hood River Valley, the Western Columbia River Gorge, the Central Columbia River Gorge, and parts of Washington.

In addition to the health risks, there are concerns about wildfires due to high temperatures, low humidity, and high winds in some areas. The NWS has issued fire weather watch warnings in parts of Montana.

It is crucial for people, especially those without proper air conditioning, to take precautions and stay hydrated during the extreme heat. Vulnerable populations such as young children, the elderly, and individuals with underlying medical conditions should be even more cautious.