Rule 1180 Community Air Monitoring

Air monitoring can provide valuable information about sources of air pollution, types of pollutants, and air quality impacts in the community. Information that is collected from air monitoring can be used to track air quality improvements.
NEW Updated 03/02/2023
Air monitoring data for Hudson Community Air Monitoring Station will be unavailable Friday, March 3, 2023 through Tuesday, March 7, 2023 due to replacement of air conditioning system.

Updated 01/16/2022
Rule 1180 Community Air Quality Notification for Hydrogen Sulfide at St Anthony Air Monitoring Station on 01/15/2022 was issued in error. Power fluctuation at the site had resulted in analyzer malfunction and causing a false alert notification being sent to subscribers. We apologize for any inconvenience this may have caused.

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Air Monitoring Data Display



Community air monitoring near all major refineries in the South Coast Air Basin (Basin) is being conducted as part of the Rule 1180 Program. Rule 1180 was adopted by the South Coast AQMD Governing Board on December 1, 2017 and requires all large petroleum refineries in the Basin to collect emission data at or near their fenceline, and to provide data quickly to the public.  To this end refineries are required to install and operate continuous fenceline air monitoring systems to monitor a comprehensive list of criteria and toxic air pollutants in real-time.  Rule 1180 also establishes a fee schedule, to be paid by the refineries, for the cost of designing, developing, installing, operating and maintaining refinery-related community air monitoring sites.  Community air monitoring is conducted by the South Coast AQMD in accordance to the Rule 1180 Community Air Monitoring Plan (CAMP).

Main Goals and Objectives

  • Implement a robust, continuous and near real-time community air monitoring network near all refineries in the Basin;
  • Provide near real-time air quality information through a dedicated website to inform the public of current air quality conditions in their community;
  • Notify the public in case the ambient concentration of one or more air pollutants exceeds pre-determined thresholds
  • Collect air pollution data suitable for short- and long-term air quality assessments;
  • Provide up-to-date community air quality data;
  • Promote awareness of the potential impact of refinery emissions on air quality through public education;
  • Track progress in improving community air quality.

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Rule 1180
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South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765



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