Smoke from nearby wildfires is causing harmful air pollution over the weekend in parts of Southern California, according to the National Weather Service.

The South Coast Air Quality Management District issued an Air Quality Alert on Friday night in response to the Canyon Fire near Lake Piru, which has burned more than 5,300 acres as of Saturday morning.

The alert was issued due to harmful fine particle pollution, the NWS said.

"Particles in wildfire smoke can get deep into the lungs and cause serious health problems such as heart attacks, strokes, asthma attacks, and difficulty breathing," the alert reads. "Everyone can be affected, but people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk

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