URGENT - WEATHER MESSAGE
National Weather Service Boise ID
1255 PM PST Mon Feb 2 2026

IDZ012-014-016-033-ORZ064-030500-
/O.CON.KBOI.AS.Y.0002.000000T0000Z-260206T1800Z/
Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley-
Upper Weiser River-Oregon Lower Treasure Valley-
Including the cities of Cambridge, Glendale, Council, Caldwell,
Goodrich, Mesa, Nyssa, Indian Valley, Nampa, Fruitvale, Ontario,
Twin Falls, and Boise
155 PM MST Mon Feb 2 2026 /1255 PM PST Mon Feb 2 2026/

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 AM
PST/ FRIDAY...

* WHAT...An extended period of stagnant air, with light winds and
  little vertical mixing. This is due to an inversion near the
  surface that will continue to trap pollutants.

* WHERE...Portions of south central and southwest Idaho and
  southeast Oregon.

* WHEN...Until 11 AM MST /10 AM PST/ Friday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.

&&

$$

JB

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
1255 PM PST Mon Feb 2 2026

ORZ062-063-030500-
/O.EXA.KBOI.AS.Y.0002.000000T0000Z-260206T1800Z/
Baker County-Malheur County-
Including the cities of Malheur City and Baker
1255 PM PST Mon Feb 2 2026 /155 PM MST Mon Feb 2 2026/

...AIR STAGNATION ADVISORY IN EFFECT UNTIL 10 AM PST /11 AM MST/
FRIDAY...

* WHAT...An extended period of stagnant air, with light winds and
  little vertical mixing. This is due to an inversion near the
  surface that will continue to trap pollutants.

* WHERE...Baker County and Malheur County.

* WHEN...Until 10 AM PST /11 AM MST/ Friday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Portland OR
956 AM PST Mon Feb 2 2026

ORZ108-115>118-123>125-WAZ204-205-031400-
/O.NEW.KPQR.AS.Y.0003.260203T1200Z-260207T0000Z/
Lower Columbia River-East Central Willamette Valley-Benton County
Lowlands-Linn County Lowlands-Lane County Lowlands-Clackamas
County Cascade Foothills-Cascade Foothills of Marion and Linn
Counties-Lane County Cascade Foothills-Cowlitz County Lowlands-
North Clark County Lowlands-
Including the cities of Rhododendron, Brightwood, Dorena
Reservoir, Mohawk, Welches, Kelso, Clark County Fairgrounds,
Orchards, Cascadia, Marcola, Jasper, Oakridge, Proebstel, Rose
Valley, Battle Ground, Lebanon, Holley, Pleasant Hill, Corvallis,
Cherryville, Green Peter Reservoir, Blue River, Scappoose,
Cottage Grove Lake, Greenberry, Salem, Shortys Corner, St.
Helens, Hockinson, Longview, Eugene, Three Lynx, Zigzag, Dorena,
Vida, Sifton, Albany, Warren, Springfield, and Mayger
956 AM PST Mon Feb 2 2026

...AIR STAGNATION ADVISORY IN EFFECT FROM 4 AM TUESDAY TO 4 PM PST
FRIDAY...

* WHAT...Light winds and limited air movement will lead to a period
  of stagnant air conditions.

* WHERE...South Willamette Valley, Foothills of the Northern and
  Central Oregon Cascades, Lower Columbia River and Cowlitz River
  Valleys, East Central Willamette Valley, and North Clark County
  Lowlands.

* WHEN...From 4 AM Tuesday to 4 PM PST Friday.

* IMPACTS...Deteriorating air quality may cause issues for people
  with respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

State air quality agencies highly recommend that no outdoor burning
occur and that residential wood burning devices be limited as much
as possible. According to state air quality agencies, prolonged
periods of stagnant air can hold pollutants close to the ground
where people live and breathe. Check with your local burn agency for
any current restrictions in your area.

People with respiratory illness should follow their physician`s
advice for dealing with high levels of air pollution during periods
of stagnant air, especially if an Air Quality Alert is in effect for
your area. To see if an Air Quality Alert is in effect for your
area, go to www.weather.gov/pqr and left-click your location on the
homepage map display. Alternatively, you could also type your
location into the search bar found on the top-left hand side of the
homepage. From there, you will see an Air Quality Alert listed at
the top if one is in effect for your location; you can click the
alert to read more details if applicable.

&&

$$

For more information from the National Weather Service visit
www.weather.gov/portland

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