Current Air Quality Data and Forecasts
Hourly data is available in two formats: (1) as AQI values for comparison against the health-based air quality levels, and (2) as monitoring data in ppm or μg/m3. The raw monitoring data can be downloaded also for specific date ranges. A description of the AQI levels and AQMD recommended cautionary statements can be found at Air Quality Index (PDF, 348kb).
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Current Advisories
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PDF
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Current Hourly Air Quality
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Map
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Page
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Today's Forecast
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Map
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PDF
(summary)
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Txt*
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Tomorrow's Forecast
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Map
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PDF
(summary)
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Txt*
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Day After Tomorrow's Forecast - If Available
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Txt*
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EPA AirNOW Air Quality Animation
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Map
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CARB Current Ozone Summary
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Table
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Check Before You Burn (residential fireplaces)
(in effect Nov. 1 - end of Feb.)
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Map
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NOTES:
Data for the current hourly air quality map are taken directly from SCAQMD's monitoring system and have not been validated and, therefore, are subject to change. Data for today's forecast map and tomorrow’s forecast map map are a result of air quality modeling calculations prepared by our meteorologists.
(*) Text-based files include Agricultural & Wildland Fire burn forecast(s) along with Rule 403.1 Wind Forecast
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Other Data Presentations
The
California Air Resources Board has current and historic data for the South Coast, as well as the whole state, including the
Latest Ozone Summary.
Studies
In addition to our long-term ambient air quality monitoring program, SCAQMD conducts specialized measurement and analysis studies to address specific air quality issues.
Air Quality Monitoring Studies
Monitoring studies of air quality in the vicinity of specific industrial sites or communities, both criteria and toxic air pollutants
Health Studies
Studies of the effects of ambient air pollutants on health.
Special Monitoring and Emissions Studies
Results of monitoring on specific issues such as wood smoke from beach fires, or site-specific investigations.
Meteorological Data
SCAQMD staff has developed AERMOD-ready meteorological data files for use in dispersion modeling. Modeling guidance for AERMOD permitting applications is available as well.
Please click here to access meteorological data for AERMOD modeling.
Related Information:
Wildfire Smoke & Ash Health Information & Safety Tips
Sign-up for Air Alerts
(Customizable email alerts)