Download South Coast AQMD’s Historical Air Quality Concentration Data Historical Air Quality by Year Historic Ozone Air Quality Trends from 1980 – Present California Air Resources Board (External sites) Current and historic data for the South Coast area and the entire state of California Latest ozone summary United States Environmental Protection Agency’s Air Data (External site) Download data from the Air Quality System
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Please visit https://saltonseaodor.org for current hydrogen sulfide (H2S) monitored values in the Salton Sea area or to sign-up for H2S alerts.
South Coast Air Quality Management District
21865 Copley Dr, Diamond Bar, CA 91765
909-396-2000
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