Air Stagnation Advisory issued January 26 at 1:30AM MST until January 31 at 9:00AM MST by NWS Boise ID
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that can trap pollutants. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...From 11 AM MST /10 AM PST/ this morning to 9 AM MST /8 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 25 at 1:55PM PST until January 27 at 4:00PM PST by NWS Spokane WA
* WHAT...Stagnant conditions will have potential to trap pollutants near the ground with deteriorated air quality. * WHERE...Nezperce, Winchester, Pomeroy, Craigmont, Soldiers Meadow Road, Culdesac, Kamiah, Clarkston, Alpowa Summit, Lewiston Grade, Gifford, Peck, Lewiston, and Lapwai. * WHEN...Until 4 PM PST Monday. * IMPACTS...Periods of air stagnation can lead to the buildup of pollutants near the surface.
Air Stagnation Advisory issued January 25 at 9:43AM MST until January 31 at 5:00AM MST by NWS Missoula MT
* WHAT...Stagnation conditions will trap pollutants, leading to deteriorating air quality. * WHERE...Eastern Lemhi County. * WHEN...From 5 PM this afternoon to 5 AM MST Friday. * IMPACTS...Periods of air stagnation can lead to the build up of pollutants near the surface.
Air Stagnation Advisory issued January 25 at 1:29AM PST until January 27 at 4:00PM PST by NWS Pendleton OR
* WHAT...Poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 4 PM PST Monday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 24 at 6:14PM PST until January 27 at 4:00PM PST by NWS Spokane WA
* WHAT...Stagnant air conditions will have potential to trap pollutants near the ground. * WHERE...Portions of North Idaho and Central, North Central, and Northeast Washington. * WHEN...Until 4 PM PST Monday. * IMPACTS...Periods of air stagnation can lead to the buildup of pollutants near the surface.
Air Stagnation Advisory issued January 24 at 3:20AM PST until January 24 at 12:00PM PST by NWS Medford OR
* WHAT...For the Air Stagnation Advisory, poor air quality will continue through the morning due to trapped pollutants. For the Cold Weather Advisory, very cold temperatures combined with gusty winds will lead to wind chills as low as 5 to 10 degrees below zero. For the Wind Advisory, northeast winds 15 to 30 mph with gusts up to 45 mph expected. * WHERE...Lake County and eastern Klamath County, and Klamath Basin. This includes Klamath Falls, Lakeview, Chiloquin, Chemult, and Paisley. * WHEN...For the Air Stagnation Advisory, until noon PST today. For the Cold Weather Advisory, from 10 PM this evening
Air Stagnation Advisory issued January 23 at 2:34PM PST until January 24 at 12:00PM PST by NWS Medford OR
* WHAT...Poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Central Douglas County and Eastern Douglas County Foothills. This includes Roseburg, Sutherlin, and Canyonville. * WHEN...Until noon PST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued January 22 at 8:03AM PST until January 24 at 12:00PM PST by NWS Medford OR
* WHAT...Poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Lake County and eastern Klamath County, Central Douglas County, Eastern Curry County and Josephine County, Eastern Douglas County Foothills, Jackson County, and Klamath Basin. * WHEN...Until noon PST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Quality Alert issued January 22 at 4:14PM PST by NWS San Diego CA
* WHAT...The South Coast AQMD has issued an air quality alert due to harmful levels of windblown dust and ash. * WHERE...Windblown dust in parts of Riverside County and windblown ash southwest of the Palisades and Eaton impact zones. Winds may also disperse ash from the Hurst, Kenneth, Line, Airport, and Bridge fire burn scars. Pollution levels can vary by time and location depending on emissions and local weather conditions. * WHEN...7 AM through 6 PM Thursday.. * IMPACTS...Particle pollution can get deep into the lungs and cause serious health problems such as asthma attacks, heart and lung disease symptoms
Air Quality Alert issued January 22 at 3:18PM PST by NWS Los Angeles/Oxnard CA
The Ventura County Air Pollution Control District has issued an air quality alert due to increased particulate matter from wildfire smoke in Fillmore/Piru, Santa Paula, Ventura, Oxnard, Camarillo, the Conejo Valley, and Simi Valley/Moorpark. The air quality alert is in effect until 12:00 pm Friday January 24, 2025. Localized air quality could fluctuate depending on wind conditions. Particulate matter can vary hour by hour and change frequently; at times producing unhealthy air quality in Ventura County. Forecast AQI colors are meant to be as representative as possible for the 24-hour day. Air quality may fluctuate and is likely to be