Active AlertsProvolt, OR

What: Decreased air quality will probably develop. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants within the valleys of Douglas, Josephine and Jackson Counties.
Where: Within the valleys in Douglas, Josephine and Jackson Counties
When: From 10 AM Friday to 10 AM PST Sunday.
Impacts: Poor air quality may cause issues for people with respiratory problems. Most outdoor burning will likely be prohibited as poor ventilation develops.
Additional Details: A strong area of high pressure will build in briefing Friday and Saturday before weakening slightly on Sunday. This will lead to poor mixing of the atmosphere and the trapping of pollutants.

Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air.