Region 129 uses the San Joaquin Valley Air Pollution Control District to monitor air quality conditions.
The San Joaquin Valley Air Pollution Control District monitors air quality with a system of air monitoring stations throughout the valley which analyze air quality data on an hourly basis.
Visalia air quality Click link »»»» http://www.valleyair.org/programs/raan/raan_index.htm?x=VIS568
This information is posted on their website at www.valleyair.org