Portland, Oregon, is preparing for a blistering stretch of heat this week, with temperatures pushing close to 100°F and thick summer haze from regional wildfires. These conditions are expected to pose health risks and disrupt outdoor activities throughout the metro area.
A Heat Advisory is in effect until 10 p.m. Wednesday, and officials are urging residents to avoid non-essential travel, particularly on I-5 and I-205, during the hottest part of the day.
Weather Forecast for Portland This Week
According to the National Weather Service, Wednesday, July 16, will bring a mix of high heat and hazardous air quality due to smoke and haze from ongoing wildfires.
Temperatures are expected to soar to 98°F by the afternoon, with widespread haze and smoke building after 2 p.m. Conditions could become dangerous, particularly for vulnerable populations such as the elderly and those with respiratory conditions.
Winds
will remain light, providing little relief from the stagnant, smoky air. The overnight low will drop only to the mid-60s, offering minimal cooling.
On Thursday,
the heat will continue with sunny skies and a high of 89°F. This heatwave will last through the week, but Friday and Saturday will bring some relief, with highs in the upper 80s and clear skies.
Despite the mild relief, air quality will remain a concern, with lingering haze from the wildfires that could impact outdoor activities. Residents are advised to monitor local alerts for air quality warnings and use fans or air conditioning to stay cool and safe.
Weekend Outlook
By Sunday, July 20, temperatures will be closer to normal for Portland, with highs in the mid to upper 70s and partly cloudy skies. The cooling trend will continue into Monday, with highs reaching around 82°F and mostly sunny skies. This provides a much-needed break from the intense midweek heat.
Five-Day Forecast for Portland (July 16–21)
Wednesday
: Hazy, high near 98°F, low around 61°F
Thursday
: Sunny, high around 89°F, low around 61°F
Friday
: Sunny, high around 88°F, low around 59°F
Saturday
: Mostly sunny, high near 84°F, low around 58°F
Sunday
: Partly cloudy, high near 78°F, low around 58°F
Monday
: Mostly sunny, high around 82°F
Heat and Air Quality Safety Tips
With the combination of high heat and poor air quality, it’s important to take precautions:
Limit
outdoor activities, especially between 2–6 p.m., when the heat is most intense.
Stay
hydrated and avoid strenuous physical activity during the hottest part of the day.
Monitor
air quality alerts to protect against respiratory issues.
Use
air conditioning or fans to stay cool, and avoid leaving children or pets in hot cars.
Looking Ahead: Potential for More Wildfire Smoke
Given the ongoing wildfires, there may be additional advisories if air quality continues to deteriorate. Stay informed and follow local authorities for the latest updates on heat and air quality conditions.
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