Southwest Oregon Air Quality Report
Incident: Big Windy Complex Wildfire
Friday, August 9, 2013
Yesterday, a light surface flow from the north-northwest continued the push of smoke into the southern Bear Creek Valley and nearby areas, leading to unhealthy air quality levels in Provolt, Medford and Ashland. However, storms moving in from the southeast and associated instability lead to greatly improving conditions in the evening hours. Other locations in the Rogue and Illinois River Valleys saw some of the best air quality in recent days after some elevated mid-day readings. Eastern and northern area locations (Klamath Basin, Crater Lake and Roseburg) continued to experience very good air quality as the cutoff upper-air weather disturbance off the California coast brought in air from the southeast. Average concentrations of fine particulate matter (PM2.5) from yesterday, August 8, are shown below with the corresponding level of health concern.
Please see the attached PDF above for the full report