When will outdoor air monitoring data for the entire year be available?

EPA regulations give reporting organizations (states, tribes, and local agencies) 90 days following the end of a calendar quarter to submit their data to EPA's Air Quality System (AQS). For Q4 data, reporting organizations have until the end of Q1 (March 31) in the next year to submit to AQS. Agencies also have until May 1 to certify their data for the previous year. Thus, we pull and process the data from May-June, and typically publish the previous year’s complete data in July.