Air officials are recommending that residents avoid the outdoors as bad air quality continues to linger in the valley.
A wood-burning ban continues to be in effect for most of the air basin's eight-county area and the stagnant weather continues to allow emissions to build up, according to a news release from the San Joaquin Air Pollution Control District.
Particulate pollution has been connected to health problems including asthma attacks and bronchial infections. Children, the elderly, and people with respiratory and cardiac conditions are particularly susceptible to health problems from high particulate pollution levels.
An "active weather system" of wind and rain is needed to clear the air but though such a system is anticipated to pass through the area on Thursday, officials aren't sure it will be powerful enough to clean things up.