India, Sept. 29 -- The Bay Area is under an air quality advisory through Sunday because of smoke from a wildfire in Oregon, the local air district said.

The Moon Complex fire, which started near the Rogue River on Sept. 3 after a lightning strike, has been sending smoke south over the ocean. That smoke is mixing with the marine layer moving onto the Bay Area, the district said Saturday night, according to SFGATE.

The district warned that smoke conditions can shift quickly. "It's hard to know how much smoke will reach the ground or where it will settle," officials said. "Skies may look hazy, and smoke might be noticeable."

Wildfire smoke contains tiny particles and other pollutants that are unhealthy even for short exposure. It can irri...