Foggy skies, as shown this week at Pacific Northwest National Laboratory in Richland, are expected to persist through at least early next week.
Foggy skies, as shown this week at Pacific Northwest National Laboratory in Richland, are expected to persist through at least early next week. Courtesy PNNL
Foggy skies, as shown this week at Pacific Northwest National Laboratory in Richland, are expected to persist through at least early next week. Courtesy PNNL

Air quality deteriorating in Tri-Cities

December 29, 2015 11:35 AM