A smoke advisory issued because of the Morgan Fire on Mount Diablo has prompted schools and other community services in the area to keep activities indoors.
The Morgan Fire, which started Sunday on Morgan Territory Road near Mount Diablo State Park, southeast of Clayton, has spread to more than 3,718 acres.
As of Monday afternoon it was about 20 percent contained, according to Cal Fire officials. As many as 100 homes are threatened and evacuations have been ordered.
The Bay Area Air Quality Management District issued a smoke advisory Monday morning because of the blaze. The smoke may affect residents in parts of Contra Costa, Alameda and Santa Clara counties, according to the air district.
Danville city officials announced that outdoor classes and sporting activities would be canceled because of smoky conditions.
Baseball, tennis, softball and bocce ball adult and children's leagues were notified about cancellations, affecting some activities planned for Monday afternoon.
Teen Centers throughout Danville will remain open, however all activities will be kept inside.
City officials encouraged all residents to limit time spent outside as the fire continues to burn.
The Dublin Unified School District notified parents today that because of the polluted air from the wildfire, district schools, including Dublin High School, are instituting "rainy day" procedures.
That means that students will not go outside for recess, physical education classes or lunchtime, school officials posted on the district's Facebook page Monday afternoon.
The air district has advised all residents in smoky areas to stay inside, close windows and doors and set air-conditioning units and ventilation systems to re-circulate indoor air.
More information about air quality is available at www.baaqmd.gov.
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