The following are updates to the AirData website. For updates regarding AQS data, see the AQS Recent Additions page.
- March 4, 2014 - Pre-generated files of data for the entire nation are now available at Download Data Files. These are files of our most commonly requested parameters at the annual, daily, and hourly summary levels.
- December 13, 2013 - The Concentration Plot now allows you to plot up to 25 years of data. Also, the daily value and date are displayed when you mouse-over a data point.
- November 15, 2013 - The Air Quality Index Report and Air Quality Statistics Report now allow you to get results for the entire United States in one query.