The “Download Data Files” page has been updated

The “Download Data Files” page has been updated.

The “Download Data Files” page has been updated. All files have been updated to incorporate any new data that was submitted to EPA since the last update (June, 2015). If a file was changed, it will have a new as-of date indicated on the table. The next update is scheduled for early June and will be the first time 2015 data is expected to be complete.

Two changes were made for this update. First, we have added files that list information about the sites and monitors in AQS. Second, the list of substances in the VOC list has been expanded at the request of users, so those files are larger (and all have been updated).

IMPORTANT – AQS not yet recalculated new values for the latest ozone standard. All AQIs, exceedance counts, etc. still reflect the previous standard. Data for the new standard will be included in the June 2016 update.