* WHAT...Dangerously hot conditions with high temperatures of 90-98F
and overnight low temperatures of 60-70F expected.

* WHERE...Greater Portland/Vancouver Metro, Western and Central
Columbia River Gorge, the Corbett area and the Hood River Valley,
Central and Southern Willamette Valley, Foothills of the Northern
and Central Oregon Cascades, Lower Columbia River and Cowlitz
River Valleys, and South Washington Cascade Foothills.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.

* ADDITIONAL DETAILS...The warmest overnight lows are expected to
occur in the Columbia River Gorge and in urban areas from Salem
northward.

WWUS76 KPQR 251151
NPWPQR

Extreme Heat Warning
National Weather Service Portland OR
451 AM PDT Mon Aug 25 2025
ORZ108>125-WAZ204>210
/O.CON.KPQR.XH.W.0002.000000T0000Z-250827T0600Z/
Lower Columbia River-Tualatin Valley-West Hills and Chehalem Mountains-Inner Portland Metro-East Portland Metro-Outer Southeast Portland Metro-West Central Willamette Valley-East Central Willamette Valley-Benton County Lowlands-Linn County Lowlands-Lane County Lowlands-West Columbia River Gorge of Oregon above 500 ft-West Columbia River Gorge I-84 Corridor-Upper Hood River Valley-Central Columbia River Gorge I-84 Corridor-Clackamas County Cascade Foothills-Cascade Foothills of Marion and Linn Counties-Lane County Cascade Foothills-Cowlitz County Lowlands-North Clark County Lowlands-Inner Vancouver Metro-East Clark County Lowlands-South Washington Cascade Foothills-West Columbia River Gorge - SR 14-Central Columbia River Gorge - SR 14

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY...

* WHAT...Dangerously hot conditions with high temperatures of 90-98F
and overnight low temperatures of 60-70F expected.

* WHERE...Greater Portland/Vancouver Metro, Western and Central
Columbia River Gorge, the Corbett area and the Hood River Valley,
Central and Southern Willamette Valley, Foothills of the Northern
and Central Oregon Cascades, Lower Columbia River and Cowlitz
River Valleys, and South Washington Cascade Foothills.

* WHEN...Until 11 PM PDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.

* ADDITIONAL DETAILS...The warmest overnight lows are expected to
occur in the Columbia River Gorge and in urban areas from Salem
northward.
Drink plenty of fluids, stay in a cool place during the heat of the
day, stay out of the sunshine, and check up on relatives and
neighbors. For those without air conditioning, use fans to keep air
moving. Keeps windows closed during the day and open at night,
unless air quality is degraded due to wildfire smoke.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

EXTREME HEAT WARNING

Extreme Heat Warning issued August 25 at 4:51AM PDT until August 26 at 11:00PM PDT by NWS Portland OR

lower columbia river

The Oregon Department of Environmental Quality, and the Lane Regional
Air Protection Agency have continued an Air Quality Advisory, which
is in effect until 8 PM tonight.

An Air Quality Advisory for ozone remains in effect. High levels of
ozone in the lower atmosphere in the region combined with forecasted
conditions will cause air quality to reach unhealthy levels at times
through this evening.

Pollutants in smoke can cause burning eyes, runny nose, aggravate
heart and lung diseases, and aggravate other serious health
problems. Limit outdoor activities and keep children indoors if it
is smoky. Please follow medical advice if you have a heart or lung
condition.

More information about air quality can be found at:
www.orcaa.org
www.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org

AEUS76 KPQR 251059
AQAPQR

Air Quality Alert
National Weather Service Portland OR
359 AM PDT Mon Aug 25 2025
ORZ109>112-114>118
Tualatin Valley-West Hills and Chehalem Mountains-Inner Portland Metro-East Portland Metro-West Central Willamette Valley-East Central Willamette Valley-Benton County Lowlands-Linn County Lowlands-Lane County Lowlands

...AIR QUALITY ADVISORY IN EFFECT UNTIL 8 PM PDT THIS EVENING...

The Oregon Department of Environmental Quality, and the Lane Regional
Air Protection Agency have continued an Air Quality Advisory, which
is in effect until 8 PM tonight.

An Air Quality Advisory for ozone remains in effect. High levels of
ozone in the lower atmosphere in the region combined with forecasted
conditions will cause air quality to reach unhealthy levels at times
through this evening.

Pollutants in smoke can cause burning eyes, runny nose, aggravate
heart and lung diseases, and aggravate other serious health
problems. Limit outdoor activities and keep children indoors if it
is smoky. Please follow medical advice if you have a heart or lung
condition.

More information about air quality can be found at:
www.orcaa.org
www.swcleanair.gov
www.oregon.gov/DEQ
www.lrapa.org

Local Weather

Portland, Oregon, US