Manteca Bulletin: A lot of factors impact air quality.
Dust. Smoke. "Particulate' matter of all different varieties that abound in the agricultural San Joaquin Valley.
But it's the one thing that we can't see that will make the biggest impact when the mercury soars past the century mark this weekend and forces those with less-than-stellar breathing to stay indoors.
Ozone.
According to San Joaquin Valley Air Pollution Control District Communications Representative Anthony Presto, it'll be high levels of...