Area of winter wood smoke	Per cent of PM 2.5 or total carbon from Wood Smoke
San Francisco Bay Area, CA	45%
Santa Rosa, CA	65%
Fresno, CA	35.5%
Bakersfield, CA	63%
Los Angeles, CA	40%
Grand Canyon, AZ	50%
Las Vegas, NV	47%
Boise, ID	72 to 89%
Missoula, MT	68%
Albuquerque, NM	75%
Portland, OR	51%
Petersville, AL	85%
Seattle, Spokane, WA	44 to 92%
Raleigh, NC	95%
Puget Sound, WA	63%

Source: US EPA, PSAQMD, BAAQMD, CA ARB