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California Hot Spots Program
Learn about the steps needed to find air toxics hot spots, assess related health risks, and reduce those risks.
A “hot spot” is an area where air toxics levels are higher than in the overall region. This may be caused by emissions from a local facility.
The Air Toxics Hot Spots Program requires permitted industrial, commercial, and public facilities to report on the air toxics they release.
Spare the Air Status
Last Updated: 3/27/2025