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CDC WONDER: Daily Fine Particulate Matter

Metadata Updated: July 26, 2023

The Daily Fine Particulate Matter data available on CDC WONDER are geographically aggregated daily measures of fine particulate matter in the outdoor air, spanning the years 2003-2008. PM2.5 particles are air pollutants with an aerodynamic diameter less than 2.5 micrometers. Reported measures are the daily measure of fine particulate matter in micrograms per cubic meter (PM2.5) (''µg/m''³), the number of observations, minimum and maximum range value, and standard deviation. Data are available by place (combined 48 contiguous states plus the District of Columbia, region, division, state, county), time (year, month, day) and specified fine particulate matter (''µg/m''³)value. County-level and higher data are aggregated from 10 kilometer square spatial resolution grids. In a study funded by the NASA Applied Sciences Program / Public Health Program, scientists at NASA Marshall Space Flight Center / Universities Space Research Association modified the regional surfacing algorithm of Al-Hamdan et al. (2009) and used it to generate continuous spatial surfaces (grids) of daily PM2.5 for the whole conterminous U.S. for 2003-2008. Two sources of environmental data were used as input to the surfacing algorithm, US Environmental Protection Agency (EPA) Air Quality System (AQS) PM2.5 in-situ data and National Aeronautics and Space Administration (NASA) Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth remotely sensed data. They also identified in a Geographic Information System (GIS) the associated geographic locations of the centroids of the gridded PM2.5 dataset in terms of the counties and states they fall into to enable aggregation to different geographic levels in CDC WONDER.

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

Downloads & Resources


Metadata Created Date November 10, 2020
Metadata Updated Date July 26, 2023

Metadata Source

Harvested from

Additional Metadata

Resource Type Dataset
Metadata Created Date November 10, 2020
Metadata Updated Date July 26, 2023
Publisher Centers for Disease Control and Prevention, Department of Health & Human Services
Identifier 947d9832-ac25-45e6-800f-96fc9e4751a5
Data First Published 2012-08-03
Data Last Modified 2023-07-25
Category Quality, State
Public Access Level public
Bureau Code 009:20
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Data Quality True
Data Dictionary
Harvest Object Id fd985cc1-3728-4ed0-8ed0-dff4a0caafa1
Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
Harvest Source Title
Homepage URL
Program Code 009:031
Source Datajson Identifier True
Source Hash fcfc07de9c8d73af5d0d7e9cff0a0c14fef909f4
Source Schema Version 1.1
Temporal 2003-01-01T00:00:00-05:00/2008-12-31T00:00:00-05:00

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