Air Quality System (AQS) ambient observations

Added By Infochimps
Ambient PM2.5 (particulate matter less than 2.5 microns) concentrations from the national ambient air quality monitoring networks stored in the Air Quality System (AQS).

Additional facts from

Dataset Summary

  • Date Released: 04/10/2008
  • Date Updated: 06/04/2009
  • Time Period: 1 year (2007)
  • Data Category Type: Raw Data Catalog
  • Frequency: Daily (or 1 day in every 3 or every 6, some may be hourly)
  • Specialized Data Category Designation: Administrative

Contributing Agency Information

Miscellaneous Facts


Public Domain (Government Work)

This dataset was prepared by the government and is therefore in the public domain. There are no restrictions upon its use.