Combined atmospheric gases and particles data
Measurements of atmospheric gases and particles together help us monitor and understand air quality. We refer to these data sets as combined atmospheric gases and particles. Measurements are from instruments located at the earth’s surface (ground-based).
The NAtChem archive contains the following data:
Some of these gases and particles data are available as early as 1992.
You can also get data files from all of the measurements of combined atmospheric gases and particles.
Information about how and where air quality data are measured is available from this link:
Data from urban sites are archived and distributed separately by the National Air Pollution Surveillance Program (NAPS).
Further reading on how we measure and produce these data is in the documentation below.
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