Air Explorer is a collection of user-friendly visualization tools for air quality analysts. The tools generate maps, graphs, and data tables dynamically. Currently, the tools access ambient concentration data from EPA’s Air Quality System (AQS). The criteria pollutant data were last updated on April 17, 2008. PM2.5 speciation data were last updated on November 2, 2006. The benzene data were last updated on February 25, 2005. The AQI graphics on this site do not yet reflect the new ozone AQI breakpoints. That update is expected to occur by June 1, 2008 and a notice will be posted here to announce the update.

UPDATE (4/17/2008) The criteria pollutant data were updated to provide complete years for 1997 to 2007.

MAPS		GRAPHS		DATA
	Map One Day Generate a three-dimensional, interactive map of daily pollutant concentrations		Plot Concentrations Generate a time series plot for a specific location and time period		Query Concentrations View or download daily concentrations for a specific location and time period
	Map Several Days Generate an animated series of daily concentration maps for a specific time period		Plot AQI Values Plot PM2.5 and Ozone AQI values for a specific location and time period		Query Speciation Data View or download daily PM2.5 speciation data for a specific location and time period
	Tile AQI Values Plot daily AQI values for a specific location and time period		Plot Speciation Data Plot daily PM2.5 speciation data for a specific location and time period		Query Benzene Data View or download benzene data for a specific location
			Plot Benzene Data Generate a time series plot or download data for all monitoring sites for a specific state

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