Data directly reported through the automatic South Coast AQMD real time monitors have not been validated extensively, and is therefore subject to change.  The results from these monitors alone cannot be used to infer health effects, but they do provide a general sense of how much of the measured pollutants are in the community at a given time.  Use of South Coast AQMD’s air quality monitoring data is at the user’s discretion and should be done with caution.

Data, information, and maps from mobile monitoring only provide air quality information at the time of the measurements and may not adequately represent air quality conditions experienced over longer time periods. Measurements from continuous instruments may be disrupted for periodic maintenance and quality checks, as well as unforeseen power failures and instrument malfunctions. Data obtained using low-cost sensors should mainly be used to complement information obtained from other, more well-established measurement instrument and methods. Local environmental conditions (e.g. meteorology) can vary widely across the region and may also have a substantial impact on the air quality measurements.

South Coast AQMD provides no guarantee, either express or implied, as to the accuracy, reliability or completeness of data furnished via the website and maps provided in the South Coast AQMD website. Further, South Coast AQMD shall not be liable under any circumstances for any direct, special, incidental or consequential damages with respect to any claim by any user or third party as a result of, or arising from, the use of the data or maps.

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South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765



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