This site is an effort by many city, county, tribal, state and federal agencies to coordinate and aggregate information for Oregon communities affected by wildfire smoke. The information is posted here by the agencies themselves while volunteers built and are maintaining the page.
Oregon Smoke Information
The map above is not able to show all state air quality monitors. To see the whole set, go to the left column, under Hot Links and click on DEQ Air Quality map which will bring up a map with many additional state monitors. Round icons represent permanent state air quality monitors, triangular icons represent temporary smoke monitors (when deployed).
DEQ nephelometer readings
returned to near “baseline” levels this afternoon across central Oregon (i.e.
Sisters, Bend, Crater Lake) but remain slightly elevated from south-central
Oregon across SE Oregon (i.e. Klamath Falls to Burns).Although satellite imagery shows considerably
less smoke being produced by the “Two Bulls Fire’ compared to 24 hours ago,
there is still some residual smoke along, south, and east of a (Southern
Cascades)-(Bend)-(John Day)-(Baker City) line.
Wildfire smoke dispersion depends on the stability
of the atmosphere as well as wind direction and speed. A stable atmosphere
holds smoke to the ground and an unstable atmosphere allows smoke to rise and
dissipate. Smoke is typically mixed to higher altitudes during the afternoon,
when daytime heating destabilizes the air mass. Conversely, smoke tends to
settle near the ground and in drainages during the overnight and early morning
A stable NW flow aloft is continuing to bring dry weather
to the state, with the exception of some morning drizzle along the extreme north
coast.An upper-level disturbance cut
across Washington today; increasing the onshore flow across Oregon.Transport winds are generally NW-N at 10-20
mph across central Oregon this afternoon; backing to W-NW across eastern
Oregon.So long as the increasing winds
do not activate the “Two Bulls Fire,” air quality should continue to improve for
areas south and east of the fire.If the
fire behavior suddenly increases, then areas east-south of the fire will be in
the potential path for additional wildfire smoke.Some settling of smoke near the ground is
likely tonight, as the air mass stabilizes and winds slacken.
A dry and stable NW flow aloft should to continue to
produce locally brisk afternoon NW transport winds with local drainage flows
becoming more dominant Tuesday night.This will lead possible wildfire smoke impacts east-south of the “Two
Pulls Fire,” if it is still active.
The flow aloft weakens as a flat and transitory
upper-level ridge moves over Oregon.That will act to decrease the onshore flow and slacken winds across
central and eastern Oregon.If the “Two
Pulls Fire” is still active, smoke impacts will be possible NE-SE of the
A stronger weather system is forecast to come onshore
Thursday and Friday, bringing cooler temperatures, increasing W-NW winds, and a
threat of showers to mainly the northern half of Oregon.