Skip to main content

36 Pit Fire UPDATE - Air Quality Report for 9/20/14 evening

36 Pit Fire
UPDATE - Air Quality Report for 9/20/14 evening
Transport winds for smoke at the 36 Pit Fire were more southerly today than expected, pushing the plume to the north, but maintaining elevation so that few areas experienced poor air quality today, although there is some ash fallout underneath the plume.  Once fire activity decreases with cooler temperatures tonight, we expect to see higher smoke impacts in the southwest through northwest drainages on the surrounding the fire.  Winds should become southwesterly around mid-day Sunday, starting a clearing trend which will continue on Monday into Tuesday.  Still expecting wetter conditions for later in the week.
36 Pit Fire Report (prepared by Mike Broughton/Janice Peterson, Air Resource Advisors)­­­­

Air Quality Outlook (Particulate Matter less than 2.5 µm in diameter)
Saturday Evening
Sept 20, 2014
Sept 21, 2014
Sunday night
Sept 21, 2014
Monday Outlook
Sept 22, 2014
Good to Moderate late
Unhealthy AM
Moderate PM

Moderate PM
Hwy 26 Corridor
(Sandy to Rhododendron)
Good early
Moderate late
USG AM   Moderate PM
Moderate becoming Good
Willamette Valley
Moderate (visible smoke aloft)
Moderate to USG

AQI Index (µg/m3)
Potential Health Impacts
Actions to Protect Yourself
Good (0-12)
Air quality is satisfactory and poses little or no health risk.

Moderate (13-35)
Air quality is acceptable for most. There may be moderate health concern for a small number of sensitive people.
Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion.
Unhealthy for Sensitive Groups (36-55)
Members of sensitive groups may experience health effects. The general public is not likely to be affected.
People with heart or lung disease, children and older adults should reduce prolonged or heavy outdoor exertion.  Everyone else should limit prolonged or heavy exertion.
Everyone may begin to experience more serious health effects.
The following groups should avoid all physical outdoor activity: People with heart or lung disease, children and older adults.  Everyone else should avoid prolonged or heavy exertion.
Very Unhealthy
Triggers a health alert, meaning everyone may experience more serious health effects
Everyone should avoid any outdoor exertion; people with respiratory or heart disease, the elderly and children should remain indoors.
For more information see the Oregon Smoke blog:
Air Quality data can be viewed at: