A wildfire in Mariposa County near Yosemite National Park and blowing dust from gusty winds forecasted for Wednesday have prompted the San Joaquin Valley Air Pollution Control District to issue a health alert.
Smoke impacts are expected to continue until the fire is extinguished, while blowing dust should subside by Thursday, said a news release from the air district. The alert has been issued for the entire San Joaquin Valley.
The Briceburg Fire started Sunday in Mariposa County and has burned 1,200 acres and was 10 percent contained as of Tuesday afternoon.
Meanwhile, a system bringing strong, dry winds is moving into California from north to south over the next several days.
Anyone exposed to poor air quality or wildfire smoke should move indoors to an air-conditioned/filtered environment with their windows closed, the district said.
Wildfire smoke and wind-blown dust can create unhealthy concentrations of PM2.5 and PM10, which can trigger asthma attacks and exacerbate respiratory diseases. PM2.5 can also increase the risk of heart attack and stroke.