Science & Technology
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How do I cite data and graphics obtained from the AirData website?
Please use the following citation: US Environmental Protection Agency. Air Quality System Data Mart [internet database] available via https://www.epa.gov/outdoor-air-quality-data. Accessed Month DD, YYYY. Return to Frequent Questions about AirData
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What is the best way to access outdoor air monitoring data?
By Data Type – it depends on what you need. Current and forecast data and maps AirNow.gov Daily summaries of recent and historical data Historical - Pre-generated files of Daily Summary Data Recent and Historical - AirData Air Quality Index (AQI)-related reports and visualizations Annual summaries Pre-generated files of Annual…
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Frequent Questions about AirData
outdoor air quality data faqs
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Interactive Map of Air Quality Monitors
map of air quality monitors
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Assessment of PM2.5 FEMs Compared to Collocated FRMs
This memorandum describes a one-page technical report that assesses the comparability of a PM2.5 continuous monitor when collocated with an FRM sampler.
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2016 Revisions to the Exceptional Events Rule: Update to Frequently Asked Questions
This September 11, 2018, document replaces the “Interim Exceptional Events Rule Frequently Asked Questions” document posted on May 14, 2013.
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Exceptional Events Submissions Table (2016 Rule)
This table contains examples of air agency submitted exceptional events demonstrations and responsive EPA decision documents that have been prepared and/or acted upon under the 2016 Exceptional Events Rule
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Exceptional Events Documents Ozone - Pennsylvania
Exceptional Events Documents Ozone - Pennsylvania
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Exceptional Events Documents Ozone - Rhode Island
Exceptional Events Documents Ozone - Rhode Island
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Exceptional Events Documents Ozone - Massachusetts
Exceptional Events Documents Ozone - Massachusetts
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Exceptional Events NPRM webinar presentation slides
Presentation slides from the Exceptional Events NPRM webinar on November 17, 2015.
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Webinar Presentation - Final Exceptional Events Rule Revisions and Final Wildfire/Ozone Implementation Guidance
Slides for 9/21/2016 webinar titled Final Exceptional Events Rule Revisions and Final Wildfire/Ozone Implementation Guidance
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Carbon Monoxide NAAQS Review - Analyses and Data Sets
Analyses and data sets for CO NAAQS Review
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Nitrogen Dioxide NAAQS Review - Analyses and Data Sets
Analyses and data sets for the NO2 NAAQS review
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Lead NAAQS Review - Analyses and Data Sets
Analyses and data sets for the Lead NAAQS review
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Sulfur Dioxide NAAQS Review - Analyses and Data Sets
Analyses and data sets for Sulfur Dioxide NAAQS review
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Trends in Ozone Adjusted for Weather Conditions
Describes met-adjustments to ambient ozone trends.
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Ozone Trends
National and regional trends in ambient ozone concentrations.
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Lead Trends
National and regional trends in lead concentrations.
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Particulate Matter (PM10) Trends
National and regional trends in ambient PM10 and PM2.5 concentrations.