A doctor examines a patient. One Fresno doctor is seeing an influx of patients complaining of breathing difficulty who have no history of lung problems.
Some parts of the state saw a little rain over the weekend, but it's been a bone-dry winter in California -- and that's not expected to change much as the season wears on. That has consequences for air quality, because rain helps clear the air of pollution. San Joaquin Valley doctors in particular have seen a growing number of people in recent weeks come in complaining of wheezing and shortness of breath. Reporter: Sasha Khokha