PM2.5 Daily Data Files (select links below to download.  All files are .csv and may be opened in Microsoft Excel.)

Site	Start Date	End Date
Bridgeport-Roosevelt School-Park Ave	01/01/07	12/31/11
Danbury-Parking Garage-WCSU	01/01/07	12/31/11
Norwalk-Health Department-East Ave	01/01/07	12/31/11
Westport-Sherwood Island State Park	01/01/07	12/31/11
East Hartford-McAuliffe Park-Remington Rd	01/01/07	12/31/11
Cornwall-Mohawk Mt	01/01/07	12/31/11
New Haven-Criscuolo Park-James St	01/01/07	12/31/11
New Haven-Shed-State St	01/01/07	12/31/11
Waterbury-Shed-Bank St	01/01/07	12/31/11
Norwich-Court House-Court House Sq	01/01/07	12/31/11

Notes: Data files consist of daily average 24-hour PM2.5 concentrations. All valid federal reference method (FRM) values are included. In most cases, the FRM samples are scheduled for once every three days, with some sites scheduled for every day sampling. When available, daily composite 24-hour averages of hourly (continuous) PM2.5 data are used to fill in days with missing FRM samples. Because the continuous PM2.5 tends to be biased high compared th the FRM data, linear adjustment factors were applied to the continuous data based on site-specific correlations with the FRM data. For sites without collocated FRM's, an average adjustment factor of 0.934*PM2.5-0.315 was used.

Air Quality Modeling

Content Last Updated on October 1, 2012