'Modest improvement' in Bay Area air quality expected

If you've suddenly become addicted to checking the air quality index, you're not alone. As days of bad Bay Area quality seem to drag on indefinitely, everyone on the West Coast is eager for clear skies.

Fresh ocean air isn't in the forecast yet, but conditions should improve as the weekend ends, the National Weather Service forecasts. Southwest winds are expected to arrive beginning Sunday evening, bringing with them "modest improvement" in air quality.