- Wildfire smoke is expected to bring unhealthy air to Portland as temperatures near 100 degrees.
- Winds blowing from the east will bring smoke and haze from dozens of fires burning east of the Cascades into the upper Willamette Valley, according to the National Weather Service.
- A Heat Advisory is in effect for the Portland metro area from Tuesday afternoon through Wednesday night, with high temperatures expected to reach 100 degrees.
- Air Quality Index readings in Portland could reach triple digits, indicating unhealthy conditions for sensitive groups.
- By Monday evening, air quality readings are expected to reach 167 out of 500, remaining in the 150 range through Tuesday.
- Smoky conditions are expected to persist through the week, with hazardous air quality forecasted late Wednesday into Thursday.
- High temperatures forecast for the region are expected to keep smoke trapped near the surface throughout the week.
- Officials advise people to avoid prolonged time outdoors and check door and window seals to ensure smoke does not enter their homes.
- Multnomah County has not announced plans to open cooling shelters despite the heat advisory.
The National Weather Service has issued a heat advisory for the Portland metro area, with temperatures expected to reach 100°F and air quality deteriorating due to wildfire smoke from over 30 wildfires across Oregon.123
Winds from the east are predicted to bring smoke and haze into the upper Willamette Valley, with air quality index readings forecast to reach 167 by Monday evening, categorized as unhealthy for sensitive groups.4
The advisory will be in effect from Tuesday afternoon through Wednesday night, with high temperatures expected to remain in the 150 range for air quality, becoming especially hazardous late Wednesday into Thursday.7

Officials warn that smoky air can cause burning eyes and worsen preexisting heart and lung conditions, advising residents to limit outdoor activities and ensure their homes are sealed against smoke.8
As of now, Multnomah County has not announced plans to open cooling shelters, despite the forecast indicating a significant heat wave.9

The weather service has issued several alerts, including a fire weather warning for the southern part of the Willamette Valley, where gusty winds and low humidity could exacerbate fire conditions.
With high pressure dominating the region, the heat is expected to build significantly, with temperatures rising into the mid-90s on Tuesday and potentially reaching the low 100s on Wednesday.
The combination of heat and smoke is expected to persist through the week, raising concerns for public health and safety.
“Air Quality Index readings are forecast to hit 167 Monday evening and climb into the 180s by late Wednesday as 2 million acres burn in 30-plus Oregon wildfires. Officials advise people to avoid prolonged time outdoors and check door and window seals, while Multnomah County has not announced plans to open cooling shelters.”



