Border Air Quality Information
What kind of data are available?
Summary ambient air quality data are available for criteria
Also, data are provided for a large number of non-criteria
pollutants (including Air Toxics). All data are provided through EPA's Aerometric
Information Retrieval System (AIRS) and updated quarterly. Only monitors
reported in AIRS and located within approximately 100 kilometers (62 miles)
of the U.S.-Mexico border are included. State agencies have reviewed the
data submitted to AIRS, including the data presented here, to assure data
Are data from monitors in Mexico included?
A significant amount of data from sites in Mexico and along
the U.S. border is now available. As per agreement with the Government of
Mexico, these data are subject to quality assurance and control measures
as the data are processed by Mexico and U.S. border states for entry into
What are summary air quality data?
Summary air quality data includes the following data for
each monitoring site:
Data collected in the last five years for each pollutant
at each site are presented. If data for any period within the last five
years are not presented, either the site was not in operation during that
period or no reliable data are available for that period.