The advisory was first issued earlier this week.
The air district says the smoke from the complex fires is expected to impact the Bay Area, especially areas at higher elevations in the North and East Bay.
Meteorologist Frances Dinglasan said residents can expect hazy sunshine today as a result from the wildfires.
The district advises if the smell of smoke is present, to avoid exposure outside for health reasons. If possible, the district says to stay inside with windows and doors closed until smoke levels subside if the temperatures allow.
Video is from a previous story
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