Air quality advisory in effect through weekend, officials say

Officials again extended an air quality advisory through Sunday in the Bay Area due to ongoing wildfires, according to a press release.

According a press release from the Bay Area Air Quality Management District, ongoing wildfires and air pollution through Saturday continue to impact the region’s air, “causing hazy and smoky skies.” Air quality in the area is expected to mostly remain in the “good to moderate range,” the release said Saturday. No Spare the Air alert was in effect.

“If possible, and temperatures allow, stay inside with windows and doors closed until smoke levels subside,” the release said.

Air quality in parts of Morgan Hill as of 2 p.m. Saturday were deemed “unhealthy for sensitive groups,” according to the EPA’s online Air Quality Index map. Other parts of the South Bay, including San Jose, Sunnyvale, Santa Clara and Milpitas saw lower air quality than much of the Peninsula.

And most of the East Bay from Fremont and Hayward through to the Tri-Valley in Dublin, Pleasanton and Livermore saw moderate level air quality, same as the South Bay.

Smoke throughout Northern California can be seen from several ongoing fires, including the historic Park Fire near Chico, the Crozier Fire, which broke out Tuesday night near Placerville, and the Canyon Fire in the Sierra Nevada foothills.

By Saturday the Park Fire had burned 429,163 acres, according to Cal Fire, and was 36% contained. The Crozier Fire was 1,960 acres and 8% contained. And the Canyon Fire was 85 acres and 27% contained.