Air quality monitoring
This monitoring station in Sacramento measures how much pollution is in the air. The ARB and local air pollution
control districts operate monitoring stations like this in many areas of California. The stations check for pollutants
such as ozone, carbon monoxide, and particulate matter. Some stations also measure toxic air contaminants.
These measurements show us when pollution reaches unhealthy levels, based on air quality standards set by California
and the federal government. What does the ARB, federal and local government agencies do to reduce or prevent unhealthy
levels of air pollution?